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# EM15-SP1 110V-120V-input-VFD-user-manual.pdf
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## Summary
This file is a user manual for the EM15-SP Series Variable Frequency Drive (VFD) by ATO Inc, designed for solar-powered pump systems. It includes detailed information on features such as MPPT solar tracking, multiple protection functions, output frequency ranges, and control interfaces like RS232/RS485. The manual covers product specifications, installation guidelines, terminal descriptions, and operational instructions for safe and efficient use.
## Content
<details><summary>Full extracted text</summary>
User Manual
EM15-SP Series VFD
ATO Inc
Address: 23555 GOLDEN SPRINGS DR. K-1, DIAMOND BAR, USA
Phone:
1800-585-1519
Zip code: 91765
Website : https://www.ato.com/
EM15-SP User Manual
Preface
Features:
⚫
MPPT algorithm of fast tracking of maximum power point of PV cells, efficiency >99%.
⚫
Solar battery working point voltage can be manually or automatically MPPT tracking.
⚫
All weather automatic operation,can also be manually or automatically,
⚫
Realize”sunrise work and sunset sleep”.
⚫
35 kinds protection function. including auto detecting short circuit after power on.
⚫
Auto sleep function/pump dry protect/low frequency protection/over load protection and etc.
⚫
Full protections:overload,over current, overvoltage,under voltage,short circuit, dry pumping etc.
⚫
Output frequency range: V/F(0~3000hz); vector control(0~300HZ).
⚫
Overload capacity:60s with 150% of rated current,3s with 180% of rated current.
⚫
Speed accuracy:±0.5%(SVC);±0.02%(VC).
⚫
Pulse setting input:0Khz~100Khz.
⚫
Remote control, support RS232/RS485 protocol, terminal control, analog control.
Before unpacking, please check carefully:
1. inverter, user manual.
2. supplier immediately.
First-time Use
For the users who use this product for the first time, read the manual carefully. If in doubt concerning some
functions or performances, contact the technical support personnel to ensure correct use.
Due to the continuous improvement of solar inverter, this document will be updated without prior notice.
Version:V1.0.0
Contents
EM15-SP User Manual
Contents
1. Safety Information and Precautions ......................................................................................................................... 1
1.1 Safety Information ......................................................................................................................................... 1
2. Product Information ................................................................................................................................................. 3
2.1 Designation Rules .......................................................................................................................................... 3
2.2 EM15-SP series .............................................................................................................................................. 3
2.3 Product appearance and installation dimension ............................................................................................. 4
2.3.1 Product appearance ............................................................................................................................. 4
2.3.2 EM15-SP VFD appearance and installing dimension(mm) .................................................................4
2.3.3 Appearance and installation dimension of external keypad (keypad tray) .......................................... 5
3.Installation of variable frequency drive.................................................................................................................... 6
3.1 Installation environment ................................................................................................................................ 6
3.2 Installation direction and space ...................................................................................................................... 6
3.3 Sketch and Description of Main Circuit Terminals........................................................................................ 7
3.3.1 Function and description of Main Circuit Terminals .......................................................................... 7
3.4 Control Circuit and Main Circuit Terminals Description .............................................................................. 8
3.4.1 Control Circuit and Main Circuit Wiring ............................................................................................ 8
3.4.2 Control Circuit Terminal Layout......................................................................................................... 9
3.4.3 Description of control circuit terminals .............................................................................................. 9
3.4 Collection Diagram For Different Motor ..................................................................................................... 10
3.5. 1 The wiring of water-level automatic control ..................................................................................... 11
4 Operation and display ............................................................................................................................................. 13
4.1 Instruction of operation and display ............................................................................................................ 13
4.2 Function Code Table .................................................................................................................................... 14
5. Description of Function Codes .............................................................................................................................. 19
F0: Basic Function Parameters Group ............................................................................................................... 19
F1 Motor Parameter ........................................................................................................................................... 22
F4 Input Terminals ............................................................................................................................................. 23
F9 Faults and protection parameters .................................................................................................................. 24
FE Solar water pump control parameters .......................................................................................................... 25
FP User password parameters ............................................................................................................................ 28
6. Fault Diagnosis and Solution ................................................................................................................................. 29
6.1 Fault Alarm and Countermeasures ............................................................................................................... 29
Appendix I. Modbus communication protocol .......................................................................................................... 31
I. About Protocol ................................................................................................................................................ 31
II. Application Methods ..................................................................................................................................... 31
III. Bus structure ................................................................................................................................................ 31
EM15-SP User Manual
1. Safety Information and Precautions
1
1. Safety Information and Precautions
In this manual, the notices are graded based on the degree of danger:
Danger: Indicates that failure to comply with the notice will result in severe personal injury or even death.
Warning: Indicates that failure to comply with the notice will result in personal injury or property damage.
Read this manual carefully so that you have a thorough understanding. Installation, commissioning or maintenance
may be performed in conjunction with this chapter. Our company will assume no liability or responsibility for any
injury or loss caused by improper operation.
1.1 Safety Information
Danger
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
Do not use damaged or missing components solar drive. Failure to comply will result in personal injury.
Please use the electric motor with upper B insulation class. Failure to comply will result in personal injury.
Install the solar drive on incombustible objects such as metal, and keep it away from combustible materials.
Failure to comply may result in a fire.
Wiring must be performed only by qualified personnel under instructions described in this manual. Failure to
comply may result in unexpected accidents.
A circuit breaker must be used to isolate the power supply and the solar drive. Failure to comply may result
in a fire.
Ensure that the power supply is cut off before wiring. Failure to comply may result in electric shock.
Connect the solar drive to ground properly by standard. Failure to comply may result in electric shock. Cover
the solar drive properly before power-on to prevent electric shock.
Do not open the solar inverter’s cover after power-on to prevent from electric shock.
Do not touch the solar drive with wet hand and its peripheral circuit to prevent from electric shock.
Do not touch the terminals of the solar drive (including the control terminals). Failure to comply may result
in electric shock.
Do not touch the U, V, W terminal or motor connecting terminals when solar drive automatically does
safety testing for the external high-voltage electrical circuit. Failure to comply may result in electric shock.
Do not go close to the equipment when selected the restart function. Failure to comply may result in
personal injury.
Do not touch the fan or the discharging resistor to check the temperature. Failure to comply will result
in personal injury.
Signal detection must be performed only by qualified personal during operation
1. Safety Information and Precautions
EM15-SP User Manual
2
Warning:
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
⚫
When two solar inverters are laid in the same cabinet, arrange the installation positions properly to ensure the
enough cooling effect.
Do not drop wire residue or screw into the solar drive. Failure to comply will result in damage to the solar
drive.
Never connect the power supply cables to the output terminals (U, V, W) of the solar drive. Failure to
comply will result in damage to the solar drive.
Make sure that all the connecting wires comply with the requirement of EMC and the safety standard in
the region. Use wire sizes recommended in the manual. Failure to comply may result in accidents.
Never connect the braking resistor between the DC bus terminals (P+) and (P-). Failure to comply may result
in a fire.
Do not perform the voltage resistance test on any part of the solar drive because such test has been done in
the factory. Failure to comply will result in accidents.
All peripheral devices must be connected properly under the instructions described in this manual. Failure
to comply will result in accidents.
Note the danger during the rotary running of motor when check the parameters. Failure to comply will
result in accidents.
Do not change the factory default settings of the solar drive. Failure to comply will result in damage to the
solar drive.
Avoid objects falling into the solar drive when it is running. Failure to comply will result in damage to solar
drive.
Do not start/stop the solar drive by turning the contactor ON/OFF. Failure to comply will result in damage
to the solar drive.
EM15-SP User Manual
2. Product Information
3
2. Product Information
2.1 Designation Rules
EM15 - SP
-
015
ATO-EM15
solar drive
SP: Solar Pump
1: DC 310 / AC 1PH 220V In
AC 3PH 220V Output
Product Series
Product Type
Output Voltage
Adaption Motor
1
3: DC 540V/AC 3PH 380V In
AC 3PH 380V Output
5d5: 5.5KW
015: 15KW
Diagram 2-1 Designation rules
2.2 EM15-SP series
Table 2-1EM15-SP Models and technical datas
EM15-SP1[S]
Description
d75
1d5
2d2
004
5d5
7d5
011
015
018
022
030
037
045
DC input (+, -)
Rated power/KW
0.75
1.5
2.2
4
5.5
7.5
11
15
18.5
22
30
37
45
Min. DC voltage/V
120
Max.DC voltage/V
400
Recommended MPPT
range /V
250~400
AC output(U, V, W)
Output current/A
3.8
5.1
9
13
25
32
45
60
75
91
112
150
176
EM15-SP3
Description
d75
1d5
2d2
004
5d5
7d5
011
015
018
022
030
037
045
055
075
090
110
132
160
200
220
250
280
315
355
400
DC input (+, -)
Rated power/KW
0.75
1.5
2.2
4
5.5
7.5
11
15
18.5
22
30
37
45
55
75
90
110
132
160
200
220
250
280
315
355
400
Min. DC voltage/V
280
Max.DC voltage/V
750
Recommended MPPT
range /V
350~750
AC output(U, V, W)
Output current
2.1
3.8
5.1
9
13
17
25
32
37
45
60
75
91
112
150
176
210
253
304
377
426
465
520
585
650
725
Output frequency
0~50/60Hz
Power factor
>0.99
Communication mode
RS485 communication
Protection class
IP20
Ambient temperature
-10℃~ +40℃(ambient temperation at 40℃~50℃，please keep derated use)
Storage temperature
-20℃~ +60℃
Humidity
Smaller than 95%RH, non-condensation
Cooling
Forced Air cooling
Altitude
Lower than 1000 m
Humidity
Less than 95%RH, without condensing
Vibration
Less than 5.9 m/s2 (0.6 g)
1S: DC 310 / AC 1PH 120V In
AC 1PH 220V Output
2. Product Information
EM15-SP User Manual
4
2.3 Product appearance and installation dimension
2.3.1 Product appearance
Diagram 2-2 Product appearance (With potentiometer)
2.3.2 EM15-SP variabe frequency drive appearance and installing dimension(mm)
Diagram 2-3 Appearance and installation dimension of EM15 series (Plastic housing structure)
Matching inverter
Appearance and installing dimension (Unit: mm)
Voltege
Power Range
W
W1
H
H1
D
d
1PH 220V
0.75~2.2kW
120
108
205
195
166
Φ4.5
3PH 220V
0.75~2.2kW
3PH 380V
4~5.5kW
3PH 220V
4~5.5kW
162
148
250
238
191
Φ5.5
3PH 380V
7.5~11kW
3PH 220V
7.5~11kW
223
207
323
307
207
Φ5.5
3PH 380V
15~22kW
EM15-SP User Manual
2. Product Information
5
Diagram 2-4 Appearance and installation dimension of EM15 series (Metal housing structure)
Matching inverter
Appearance and installing dimension (Unit: mm)
Voltege
Power Range
W
W1
H
H1
D
d
3PH 220V
15~18.5kW
300
220
540
500
240
Φ7
3PH 380V
30~37kW
3PH 220V
22kW
340
260
580
540
270
Φ10
3PH 380V
45~55kW
3PH 220V
37~45KW
410
260
610
575
280
Φ12
3PH 380V
75~90kW
3PH 380V
110~132kW
460
320
710
690
335
Φ12
3PH 380V
160~220kW
535
360
885
830
370
Φ12
3PH 380V
250~315kW
650
360
1040
985
415
Φ12
3PH 380V
355~400kW
815
600
1350
1250
445
Φ12
2.3.3 Appearance and installation dimension of external keypad (keypad tray)
Diagram 2-5 Appearance and installation dimension of external keypad (keypad tray)
H
3. Installation of variable frequency drive
EM15-SP User Manual
6
3.Installation of variable frequency drive
3.1 Installation environment
1. The place with indoor vents or ventilation devices.
2. The environment temperature shall be -10℃~40℃. If the temperature is over 40℃but less than 50℃,
better to take down the cover of variable frequency drive or open the front door of cabinet to facilitate
heat dissipation.
3. Try to avoid high temperature and wet place; the humidity shall be less than 90% without frost deposit.
4. Avoid direct sunlight.
5. Keep away from flammable, explosive and corrosive gas and liquid.
6. No dust, floating fiber and metal particles.
7. Install on the place without strongly vibration. And the vibration should be not over 0.6G, Especially
pay attention to far away from the punching machine, etc.
8. Keep away from electromagnetic interference source.
3.2 Installation direction and space
In order to not affect the service life of variable frequency drive and reduce its performance, note
for its installation direction and space and correctly fasten it.
Diagram3-1 Ventilating duct installation dimension diagram of variable frequency drive
Power class
Installation dimension
A
B
≤7.5kW
≥ 20mm
≥ 100mm
11kW - 30kW
≥ 50mm
≥ 200mm
≥ 37kW
≥ 50mm
≥ 300mm
Please install the variable frequency drive vertically, to send out the heat upward, and pay attention to
direction of variable frequency drive to avoid inversion.
If there are several units of variable frequency drive installed, please install them side by side, do not to
install up and down.
EM15-SP User Manual
3. Installation of variable frequency drive
7
3.3 Sketch and Description of Main Circuit Terminals
3.3.1 Function and description of Main Circuit Terminals
Single phase 220V output：EM15-SP1S-d75 ~ EM15-SP1S-011
Three phase 220V output：EM15-SP1-d75~EM15-SP1-011
Three phase 380V output：EM15-SP3-d75～EM15-SP3-022
Three phase 380V output：EM15-SP3-030～EM15-SP3-090
Three phase 380V output：EM15-SP3-110～EM15-SP3-400
Terminal symbol
Function description
L,N or R,T
DC power input terminals
P+,PB
Braking resistor connectin
P,P+
External DC reactor connecting terminals,shorted by bronze before delivery
P+,P-
DC power input terminals；External brake unit DC output terminal
or E/PE
Grounding terminal
U,V,W
Three-phase AC power output terminals
3. Installation of variable frequency drive
EM15-SP User Manual
8
3.4 Control Circuit and Main Circuit Terminals Description
3.4.1 Control Circuit and Main Circuit Wiring
Diagram3-2 EM15-SP control circuit and main circuit wiring
EM15-SP User Manual
3. Installation of variable frequency drive
9
3.4.2 Control Circuit Terminal Layout
Diagram3-3 EM15-SP control circuit terminal sketch diagram
3.4.3 Description of control circuit terminals
Type
Terminal
Symbol
Terminal
Name
Terminal function description
Power
Supply
+10V-GND
External
+10V power
supply
Provide +10V power supply to external unit. Maximum output
current:10Ma
Generally, it provides power supply to external potentiometer
with resistance range of 1 kΩ~5kΩ
+24V-COM
External
+24V power
supply
Provide +24 V power supply to external unit. Generally, it
provides power supply to DI/DO terminals and external
sensors.Maximum output current: 200 mA
PLC
External
power supply
input
terminals
It connect with +24V default
Analog
input
AI1-GND
Analog input
1
1. Input range: DC 0V~10V/ 0mA~20mA(decided by jumper
AI1/AI2 on the control board); AI3: DC -10V~+10V
2. Impedance: 22 kΩ (voltage input), 500 Ω (current input)
AI2-GND
Analog input
2
AI3-GND
Analog input
3
Digital
input
DI1-COM
Digital input 1
1. Optical coupling isolation, compatible with dual polarity
input
2.Input Impedance: 2.4 kΩ
3. Voltage range for level input: 9V~30 V
DI2-COM
Digital input 2
DI3-COM
Digital input 3
DI4-COM
Digital input 4
DI5-COM
Digital input 5
HDI-COM
High Speed
Pulse Input
Maximum input frequency: 100 kHz
Analog
output
AO1-GND
Analog output
1
Voltage or current output is decided by jumper AO1/AO2.
Output voltage range: 0V~10 V
Output current range: 0mA~20 mA
AO2-GND
Analog output
2
FMP- COM
High Speed
Pulse Output
Constrained by function code b4-00 "FMP terminal output
mode selection" as the high-speed pulse output, the highest
frequency is 100kHz; when use as an open collector output,
3. Installation of variable frequency drive
EM15-SP User Manual
10
Type
Terminal
Symbol
Terminal
Name
Terminal function description
specifications is the same as DO.
Relay
output
TA1-TB1
NC terminal
Contact driving capacity: 250 VAC, 3 A, COSø = 0.4
DC 30 V, 1 A
TA2-TB2
TA1-TC1
NO terminal
TA2-TC2
Auxiliary
interface
PG card interface
PG cards: Open-collector, differential are selectable options.
Communications expansion
Reversed
External keypad interface
Connected to an external keypad
Jumper
PE-COM
COM grounding PE selection ,default connection.
In the case of interference, connecting PE to COM can improve
anti-interference
PE-GND
GND grounding PE selection ,default connection.
In the case of interference, connecting PE to COM can improve
anti-interference.
AI1
AI1 output selection.
Voltage or Current output, voltage output by default.
AI2
AI2 output selection.
Voltage or Current output, current output by default.
AO1/AO2
AO1/AO2 output selection.
Voltage or Current output, voltage output by default.
458
485 communication resistor selection, default connection ON.
In the case of interference, anti-interference can be improved.
3.4 Collection Diagram For Different Motor
COM
Photovoltaic cell
Water Tank
Pump
Water Pipe
+ -
U V W
EM15-SP
C o n tro l Te rm in a l
DI1
DI2
Note: For the EM15-SP1S series,
U and V as single Phase 220V
output terminal.
Diagram3-4 220V three phase installed without water level sensor (PV Input)
EM15-SP User Manual
3. Installation of variable frequency drive
11
COM
C o n tro l Te rm in a l
Water Tank
Pump
Water Pipe
Photovoltaic cell
+ -
U V W
EM15-SP
DI1
DI2
DI4
DI5
Diagram3-5 Diagram of 3phsae inverter connection method (PV Input)
3.5. 1 The wiring of water-level automatic control
The wiring for floater water-level switch connected by cable
The common port, which using floate water-level switch connected by cable, is fed to the terminal “COM”
of EM15-SP. And then, connected to DI1.
DI1
COM
EM15-SP
Inverter
DI1
COM
EM15-SP
Inverter
High water-level
Low water-level
Diagram3-6 Diagram of Low water level and high water level
Remarks:
When the actual water-level in the wells is higher than the horizontal line of high water-level, DI1 will be
connected to the “COM” as well as controller automatically will start the pump. On the contrary, if the
actual water-level is lower than the horizontal line of low water-level, DI1 will be disconnected from
3. Installation of variable frequency drive
EM15-SP User Manual
12
“COM” as well as controller automatically stop the pump to prevent anhydrous idling.
The wiring for floater water-level switch mounted on a side
The floater water-level switch mounted on a side is the normally open contact to output and its common
wire is connected to the terminal COM of EM15-SP inverter. At the same time, the low level-water wire is
connected to terminal DI4 and the high water-level wire is connected the terminal DI5.
EM15-SP
EM15-SP
EM15-SP
EM15-SP
DI5
Low water-level
High water-level
COM
DI5
COM
DI4
COM
DI4
COM
Detector switch of
high water-level
Detector switch of
low water-level
Detector switch of
high water-level
Detector switch of
low water-level
Diagram3-7 Diagram of Low water level and high water level
Remarks:
When the actual water-level in the reservoir is lower than horizontal line of low water-level, DI4 and DI5
will be disconnected from the COM as well as controller automatically strat the pum. On the contrary, if the
actual water-level is higher than the horizontal line of high water-level, DI4 and DI5 will be connected to
COM as well as controller automatically stop the pump to prevent water overflow.
Notice:
1. If only use one detection signal of water-level in the reservoir, DI4 and DI5 must be connected together
by conductor.
EM15-SP User Manual
4. Operation and Display
13
4 Operation and display
4.1 Instruction of operation and display
Diagram 4-1 Operating panel
No.
Name
Function
LED display area The 5-digit LED display is able to display the set frequency, output frequency, monitoring
data and fault codes.
Unit / Status
Indicator area
Hz
Frequency unit
A
Current unit
V
Voltage unit
STOP/
RUN
OFF indicates that the variable frequency drive is in the stop state and ON
indicates that the variable frequency drive is in the running state.
FWD/REV It is Forward/Reversal indicator, ON indicates forward rotation.
LOCAL
/REMOTE
It indicates whether the variable frequency drive is operated by operation
keypad, terminals or remoter (communication). OFF indicates keypad
operation control state; ON indicates terminals operation control state;
Blinking indicates remote operation control state.
TRIP
/ALARM
Tunning/ Torque Control/Fault indicator
When the indicator is ON, it indicates torque control mode. When the
indicator is blinking slowly, it indicates the auto-tuning state. When the
indicator is blinking quickly, it indicates the fault state.
Encoder knob
Frequency, data or function code increase or decrease; the encoder knob has the
confirmation key function
Operation key area
Programming key: Enter or exit menu level I.
Confirmation key: Enter the menu interfaces level by level, and confirm the
parameter setting.
Multi-function key: Perform function switchover according to the setting of
b9-01
Shift key: Select the displayed parameters in turn in the stop or running
state, and select the digit to be modified when modifying parameters.
Increment key: Increase data or function code.
Decrement key: Decrease data or function code.
Running key: Start the variable frequency drive in the keypad control mode.
Stop/Reset key: Stop the variable frequency drive when it is in the running
state and perform the reset operation when it is in the fault state. The functions
of this key are restricted by b9-00.
4. Operation and Display
EM15-SP User Manual
14
4.2 Function Code Table
If FP-00 set to a non-zero number, parameter protection is enabled. You must write in correct user password to
enter the menu.
To cancel the password protection function, enter with password and set FP-00 to 0。
The parameter menu under the user-defined parameter mode can directly enter without password.
A is variable frequency drive system parameter. Group “F” is basic function parameters .Group “U” is
monitoring function parameters.
Code
Name
Description
Default
F0: Basic function parameters
F0-00
G/P type selection
1: G type(Constant torque load models )
2: P type(Fan, water pump load models )
Model
dependent
F0-02
Command source selection
0: Keypad control (LED off)
1: Terminal control (LED on)
2: Communication control (LED blinking)
0
F0-03
Main frequency source X
selection
0:
Digital
setting
(Preset
frequencyF0-08,
UP/DOWN
modifiable, no-record after power off)
1: Digital setting (Preset frequencyF0-08 ，UP/DOWN
modifiable, record after power off)
2: AI1
3: AI2
4: Keypad potentiometer
9: Communication setting
4
F0-08
Preset frequency
0.00Hz～maximum frequency(F0-10)
50.00Hz
F0-09
Rotation direction
0: Forward；FWD/REV lights off；
1: Reverse；FWD/REV lights on；
0
F0-10
Maximum frequency
50.00Hz～500.00Hz
50.00Hz
F0-11
Source of frequency
upper limit
0: Set by(F0-12)
1: AI1
2: AI2
3: AI3
5: Communication setting
0
F0-12
Frequency upper limit
Frequency lower limit(F0-14)～maximum frequency(F0-10)
50.00Hz
F0-13
Frequency upper limit offset
0.00Hz～maximum frequencyF0-10
0.00Hz
F0-14
Frequency lower limit
0.00Hz～frequency upper limit(F0-12)
0.00Hz
F0-15
Carrier frequency
0.5kHz～16.0kHz
Model
dependent
F0-16
Carrier frequency adjustment
with temperature
0: No
1: Yes
1
F0-17
Acceleration time 1
0.00s～650.00s(F0-19=2)
0.0s～6500.0s(F0-19=1)
0s～65000s(F0-19=0)
Model
dependent
F0-18
Deceleration time 1
0.00s～650.00s(F0-19=2)
0.0s～6500.0s(F0-19=1)
0s～65000s(F0-19=0)
Model
dependent
F0-19
Acceleration/Deceleration
time unit
0: 1s
1: 0.1s
2: 0.01s
1
F0-23
Record of digital setting
frequency of power failure
0: not record
1: record
0
F0-25
Acceleration/Deceleration time
base frequency
0: Maximum frequency (F0-10)
1: Set frequency
2: 100Hz
0
F0-26
Base frequency for UP/ DOWN
modification during running
0: Running frequency
1: Setting frequency
0
F0-27
Binding command source to
frequency source
Unit's digit: Binding keypad command to following frequency
source.
0000
EM15-SP User Manual
4. Operation and Display
15
Code
Name
Description
Default
0: No binding
1: Frequency source by digital setting
2: AI1
3: AI2
4: Keypad potentiometer
9: Communication setting
Ten's digit:: Binding terminal command to frequency source.
Hundred's digit: Binding communication command to frequency
source.
F0-28
Serial communication protocol 0: MODBUS-RTU protocol
0
F1: Motor parameter
F1-00
Motor type selection
0: General asynchronous motor
1: Variable frequency asynchronous motor
0
F1-01
Rated motor power
0.1kW～1000.0kW
Model
dependent
F1-02
Rated motor voltage
1V～2000V
Model
dependent
F1-03
Rated motor current
0.01A～655.35A(variable frequency drive power≤55kW)
0.1A～6553.5A(variable frequency drive power >55kW)
Model
dependent
F1-04
Rated motor frequency
0.01Hz～maximum frequency
Model
dependent
F1-05
Rated motor rotational speed
1rpm～65535rpm
Model
dependent
F4: input terminals parameters
F4-00
DI function selection
0: No function
1: Forward RUN (FWD) or running command
2: Reverse RUN (REV) or the direction of FED/REV
4: Forward JOG(FJOG)
5: Reverse JOG(RJOG)
8: Free stop
9: Fault reset(RESET)
10: Run pause
11: Normally open(NO) input of external fault
33: Narmally closed (NC) input of external fault
36: External STOP terminal 1
44: User-defined fault 1
47: Emergercy stop
48: External STOP terminal 2
51: Full-water detection 1
52: Full-water detection 2
53: MPPT stop/ Photovoltaic control stop
01
F4-01
DI2 function selection
09
F4-02
DI3 function selection
53
F4-03
DI4 function selection
51
F4-04
DI5 function selection
52
F4-05
DI6 function selection
02
F4-13
AI curve1 Min. input Value
00.00V～F4-15
00.00V
F4-14
Corresponding setting of AI
curve1 Min.input
-100.0%～+100.0%
000.0%
F4-15
AI curve1 input maximum value F4-13～+10.00V
10.00V
F4-16
Corresponding setting of AI
curve1 input maximum value -100.0%～+100.0%
100.0%
F4-17
AI1 input filter time
0.00s～10.00s
00.10s
F4-18
AI curve 2 Min. input Value
0.00V～F4-20
00.00V
F4-19
Corresponding of AI curve 2
Min. input Value
-100.0%～+100.0%
000.0%
F4-20
AI curve2 input maximum value F4-18～+10.00V
10.00V
F4-21
Corresponding of AI curve2
input maximum value
-100.0%～+100.0%
100.0%
F4-22
AI2 filter time
0.00s～10.00s
00.10s
F4-35
DI1delay time
0.0s～3600.0s
0.0s
F4-36
DI2 delay time
0.0s～3600.0s
0.0s
F4-37
DI3 delay time
0.0s～3600.0s
0.0s
4. Operation and Display
EM15-SP User Manual
16
Code
Name
Description
Default
F9: Fault and Protection parameters
F9-09
Fault auto reset times
0～20
20
F9-10
Relay action selection during
fault auto reset
0: Not act
1: Act
0
F9-11
Time interval of fault auto reset 0.1s～100.0s
5.0s
F9-12
Input phase loss
protection/contactor energizing
protection selection
Unit's digit: Input phase loss protection
Ten's digit: Contactor energizing protection
0: Disabled
1: Enabled
00
F9-13
Output phase loss protection
0: Disabled
1: Enabled
0
F9-14
Fault types
0: No fault
2: Over current during acceleration
3: Decelerated current during acceleration
4: Over current at constant speed
5: Overvoltage during acceleration
6: Decelerated voltage during deceleration
7: Overvoltage at constant speed
9: Less voltage fault
10: variable frequency drive overload
11: Motor overload
12: Power input phase loss
13: Power output phase loss
14: IGBT Module overheat
15: External equipment fault
16: Communication fault
18: Current detection fault
21: EEPROM read- write fault
22: variable frequency drive hardware
fault 23: Short circuit to ground
26: Accumulative running time reached
27: User-defined fault 1
28: User-defined fault 2
29: Accumulative power-on time reached
40: Fast current limit fault
43: Motor over-speed
55: Load distribution slave failure
00
F9-37
Frequency of fault
－
－
F9-38
Current of fault
－
－
F9-39
DC Bus voltage of fault
－
－
F9-40
Input terminals status of fault
－
－
F9-41
Output terminal status of fault －
－
F9-42
variable frequency drive
status of fault
－
－
F9-43
Power-on time of fault
－
－
F9-44
Running time of fault
－
－
FE: parameters for solar water pump control
FE-00
PV inverter Selection
0: Disabled
1: Enabled
1
FE-01
Vmpp voltage Selection
0: Manual setting
1: MPPT Automatic algorithm tracking
1
FE-02
Vmpp voltage manual
Reference value
0-1000.0V
500.0V
FE-03
Motor Selection
0: General three phase ac motor
1: Single phase motor with capacitor
2: Single phase motor without capacitor
0
FE-04
CVT proportional gain 1
0.0%-999.9%
100.0%
EM15-SP User Manual
4. Operation and Display
17
Code
Name
Description
Default
FE-05
CVT Integral gain1
0.0%-999.9%
100.0%
FE-06
Reserved
--
--
FE-07
Reserved
--
--
FE-08
Reserved
--
--
FE-09
Reserved
--
--
FE-10
Mppt search upper limit voltage 0-1000.0V
750.0V
FE-11
Mppt search lower limit voltage 0-1000.0V
300.0V
FE-12
MPPT search gain
0%-500%
100%
FE-13
MPPT search time interval
0.0-10.0s
1.0sec
FE-14
Reserved
0
0
FE-15
Reserved
0
0
FE-16
Dormancy voltage
0.0-1000.0V
300.0V
FE-17
Dormancy wake-up voltage
0.0-1000.0V
350.0V
FE-18
Dormancy wake-up time
0-30000sec
60sec
FE-19
detection frequency of low
frequency protection
0.00Hz～300.00Hz
10.00Hz
FE-20
Detection time of low frequency
protection
0-30000s
10sec
FE-21
low frequency protection
automatic recovery time
0-30000s
60sec
FE-22
detection current of dry
pumping protection
0.0-999.9A
0.0A
FE-23
detection time of dry pumping
protection
0-30000s
10sec
FE-24
automatic recovery time of dry
pumping protection
0-30000s
60sec
FE-25
detection current of overcurrent
protection
0.0-999.9A
0.0A
FE-26
detection time of overcurrent
protection
0-30000s
10sec
FE-27
over current protection
automatic recovery time
0 -30000s
60sec
FE-28
Min. power protection value
0.00kw - 650.00kw
0.00kw
FE-29
Detection time of Min. power
protection
0 - 30000s
0sec
FE-30
Min. power protection
automatic recovery time
0 - 30000s
0sec
FE-31
Full water detection mode
0: terminal
1: AI1
2: AI2
0
FE-32
Analog full-water detection
Thresholds
0-100.0%
25.0%
FE-33
detection time of full-water
protection
0-30000s
10sec
FE-34
exit time of full-water protection 0-30000s
60sec
FE-35
analog sensor damaged
Thresholds
0-100.0%
0.0%
FE-36
PV DC correction coefficient 0.0-200.0%
100.00%
FE-37
PV DC correction offset
-100.00A-100.00A
0.00A
FE-38
power curve point 0
0.0kw-999.9kw
0.5kw
FE-39
power curve point 1
0.0kw-999.9kw
1.0kw
FE-40
power curve point 2
0.0kw-999.9kw
1.5kw
FE-41
power curve point 3
0.0kw-999.9kw
2.0kw
FE-42
power curve point 4
0.0kw-999.9kw
2.5kw
FE-43
flow curve point 0
0.0-999.9m^3/h
0.0 m^3/h
FE-44
flow curve point 1
0.0-999.9m^3/h
5.0 m^3/h
FE-45
flow curve point 2
0.0-999.9m^3/h
10.0m^3/h
FE-46
flow curve point 3
0.0-999.9m^3/h
15.0m^3/h
FE-47
flow curve point 4
0.0-999.9m^3/h
20.0m^3/h
4. Operation and Display
EM15-SP User Manual
18
Code
Name
Description
Default
FP: Parameters for User password
FP-00
User password
0 ～ 65535
00000
FP-01
Restore default settings
0: No operation
1: Restore default settings except motor parameters and
accumulation record.
02: Clear records
04: Back up present user parameters
501: Restore user backup parameters
0
FP-02
Function parameter group
display selection
Unit’s digit: U group display selection
0: Not displayed
1: Display
Ten’s digit: A Show Select
0: Not displayed
1: Display
01
FP-04
Parameter modification property 0: modifiable
1: Not modifiable
0
U0: Monitoring parameters
U0-00
Running frequency(Hz)
--
0.01Hz
U0-01
Setting frequency(Hz)
--
0.01Hz
U0-02
PV voltage(V)
--
0.1V
U0-03
Output voltage(V)
--
1V
U0-04
Output current(A)
--
0.01A
U0-05
PV power (KW)
--
0.1KW
U0-06
PV current(A)
--
0.01A
U0-07
DI input status
--
1
U0-08
DO output status
--
1
U0-09
AI1
--
0.01V
U0-10
AI2
--
0.01V
U0-11
KAI
--
0.01V
U0-12
PVopen circuit voltage
--
0.1V
U0-13
Pump flow speed
--
0.1m^3/hr
U0-14
Daily flow
--
0.1m^3
U0-15
Cumulative flow(low water
level)
--
0.1m^3
U0-16
Cumulative flow (high water
level)
--
0.1Km^3
U0-17
Daily generated electricity
--
0.1kwh
U0-18
Cumulative electricity
consumption(low water level) --
0.1kwh
U0-19
Cumulative electricity
consumption(high water level) --
1Mwh
Ar: Parameters for Alarm
Ar.01
Dormancy
81
Ar.02
Low frequency protection
82
Ar.03
Dry pumping rotection
/underload
83
Ar.04
Overcurrent protection
84
A4.05
Min.power protection
85
A4.06
Full-water protection
86
A4.07
Analog sensor fault
87
EM15-SP User Manual
5. Description of Function Code
19
5. Description of Function Codes
F0: Basic Function Parameters Group
F0-00
G/P type selection
1: G type(Constant torque load models )
2: P type(Fan, water pump load models )
Model
dependent
This parameter is used to display the delivered model and cannot be modified.
1: Applicable to constant torque general load with rated parameters specified.
2: Applicable to variable torque load (fan and pump) with rated parameters specified.
F0-02
Command source selection
0: Keypad control (LED off)
1: Terminal control (LED on)
2: Communication control (LED blinking)
0
It is used to determine the input channel of the variable frequency drive control commands, such as run, stop,
forward rotation, reverse rotation and jog operation. You can input the commands in the following three channels:
0: Keypad control ("LOCAL/REMOT" indicator off)
Commands are given by pressing keys “RUN” and “STOP/RESET” on the operation panel.
1: Terminal control ("LOCAL/REMOT" indicator on)
Commands are given by means of multifunctional input terminals with functions such as FWD, REV, JOGF, and
JOGR.
2: Communication control ("LOCAL/REMOT" indicator blinking)
Commands are given from host computer. For more details please refer to the appendix of communication protocol.
F0-03
Main frequency source
X selection
0: Digital setting(Preset frequencyF0-08 ，UP/DOWNUP/DOWN
modifiable, no-record after power off)
1: Digital setting (Preset frequencyF0-08，UP/DOWNUP/DOWN
modifiable, record after power off)
2: AI1
3: AI2
4: Keypad potentiometer
9: Communication setting
4
It is used to select the setting channel of the main frequency. You can set the main frequency in the following 10
channels:
0: Digital setting (not record at power failure)
The initial value of the set frequency is the value of F0-08 (Preset frequency). You can change the set frequency by
pressing ▲ and ▼ on the operation panel (or using the UP/DOWN function of input terminals).
When the VFD is powered on again after power failure,the set frequency reverts to the value of F0-08
(record digital setting frequency )
1: Digital setting (record at power failure)
The initial value of the set frequency is the value of F0-08(Preset frequency). You can change the set frequency by
pressing keys ▲ and ▼ on the operation panel (or using the UP/DOWN functions of input terminals).
When the variable frequency drive is powered on again after power failure, the setting frequency is the value
memorized at the moment of the last power failure.
Note that F0-23 (record digital setting frequency of power failure) F0-23 determines whether the set frequency
is memorized or cleared when the variable frequency drive stops.It is related to stopping rather than power failure.
2: AI1
3: AI2
The frequency is set by analog input. The EM15 control board provides two analog input (AI) terminals (AI1, AI2).
Including:
AI1: 0V~10 V voltage input or 0mA ～ 20mA current input, determined by jumper JP2 on the control card;
5. Description of Function Code
EM15-SP User Manual
20
AI2: 0V~10 V voltage input or 0mA ～ 20mA current input, determined by jumper JP3 on the control card;
The corresponding relationship curve between the input voltage of AI1, AI2 and the target frequency can be
user-defined.
EM15-SP provides 5 corresponding curves, 3 groups curves are linear relation (2 point correspondence), 2 curves are
arbitrary curve of 4 points corresponding relationship,User can set by F4-13 ~ F4-27 function code and A6 group
function code. F4-33 is used to set the AI1~AI2 two analog input. When AI is used as the frequency setting source,
the corresponding value 100% of the voltage/current input corresponds to the value of F0-10 (Maximum frequency).
4: Keypad potentiometer
9: Communication setting
The frequency is set by communication mode.
F0-08
Preset frequency
0.00Hz～ maximum frequency(F0-10)
50.00Hz
If the frequency source is digital setting he value of this parameter is the initial frequency of the variable
frequency drive (digital setting).
F0-09
Rotation direction
0: Forward direction
1: Reverse direction
0
You can change the rotation direction of the motor just by modifying this parameter without changing the motor
wiring. Modifying this parameter is equivalent to exchanging any two phase of the motor's U, V, W wires.
Note:
The motor will restore original running direction after parameter initialization. Do not use this function in
applications where changing the rotating direction of the motor is prohibited after system commissioning is
complete.
F0-10
Maximum frequency
50.00Hz～500.00Hz
50.00Hz
When the frequency source is AI, pulse setting (HDI), or Multi-segment speed, the 100% of input corresponds to the
value of this parameter.
F0-11
Source of frequency upper limit
0: Set byF0-12
1: AI1
2: AI2
3: Keypad potentiometer
5: Communication setting
0
It is used to set the source of the frequency upper limit, including digital setting(F0-12)，AI, pulse setting or
communication setting.
F0-12
Frequency upper limit
Frequency lower limit(F0-14)～maximum frequency(F0-10)
50.00Hz
Setting Frequency upper limit.
F0-13
Frequency upper limit offset
0.00Hz～maximum frequency(F0-10)
0.00Hz
If the source of the frequency upper limit is analog input, set F0-13 as the offset value,the final frequency upper
limit is obtained by adding the offset in this parameter to the frequency upper limit set in F0-11
F0-14
Frequency lower limit
0.00Hz～frequency upper limit (F0-12)
0.00Hz
If the frequency command is lower than the value of this parameter set by F0-14, the variable frequency drive can
stop, r run at the frequency lower limit, or run at zero speed.The result can be determined byF8-14(setting
frequency lower than frequency lower limit running mode).
EM15-SP User Manual
5. Description of Function Code
21
F0-17
Acceleration time 1
0.00s～650.00s(F0-19=2)
0.0s～6500.0s(F0-19=1)
0s～65000s(F0-19=0)
Model
dependent
F0-18
Deceleration time 1
0.00s～650.00s(F0-19=2)
0.0s～6500.0s(F0-19=1)
0s～65000s(F0-19=0)
Model
dependent
Acceleration time indicates the time required by the variable frequency drive to accelerate from 0 Hz to
"Acceleration / Deceleration base frequency"(F0-25 ) that is, t1 in Diagram 6-1.
Deceleration time indicates the time required by the variable frequency drive to decelerate from
"Acceleration / Deceleration base frequency" (F0-25 )，to 0 Hz, that is, t2 in Diagram 5-1.
Diagram 5-1 Acceleration/Deceleration time
F0-19
Acceleration/Deceleration time
unit
0: 1s
1: 0.1s
2: 0.01s
1
To satisfy requirements of different applications ，the EM15 provides three acceleration/ deceleration time units,
1s, 0.1s and 0.01s.
Note: Modifying this parameter will make the decimal places of all frequency-related parameters change and
corresponding frequency values change. Pay attention for this in on-site application.
F0-23
Record of digital setting
frequency of power failure
0: not record
1:record
0
This parameter is valid only when the frequency source is digital setting.
If F0-23 is set to 0, the digital setting frequency value restore to the value of F0-08(Preset frequency)after the
variable frequency drive stops. The modification by using keys ▲ and ▼ or the terminal UP/DOWN function is
cleared to zero.
If F0-23 is set to 1, the digital setting frequency value “Reserved”is the set frequency at the moment when the
variable frequency drive stops. The modification by using keys ▲ and ▼ or the terminal UP/ DOWN function
remains is record and valid.
F0-25
Acceleration/Deceleration time
base frequency
0: Maximum frequency(F0-10)
1: Set frequenc
2: 100Hz
0
5. Description of Function Code
EM15-SP User Manual
22
The acceleration/deceleration time indicates the time for the variable frequency drive to increase from 0 Hz to the
frequency set in F0-25，figure 6-1 is the acceleration/deceleration time diagram.
If this parameter is set to 1, the acceleration/deceleration time is related to the set frequency. If the set frequency
changes frequently, the motor's acceleration/deceleration also changes.
Pay attention for this in on-site application.
F0-26
Base frequency for UP/ DOWN
modification during running
0: Running frequency
1: Setting frequency
0
This parameter is valid only when the frequency source is digital setting.
It is used to set the base frequency to be modified by using keys ▲ and ▼ or the terminal UP/DOWN function.If the
running frequency and setting frequency are different, there will be a large difference between the frequency
inverter's performance during the acceleration/ deceleration process.
F0-27
Binding command source to
frequency source
Unit's digit: Binding keypad command to following frequency
source.
0: No binding
1: Frequency source by digital settin
2: AI1
3: AI2
4: AI3
9: Communication setting
Ten's digit: Binding terminal command to frequency source.
Hundred's digit: Binding communication command to frequency
source.
0000
It is used to bind the three running command sources with the nine frequency sources, facilitating to implement
synchronous switchover.
For details on the frequency sources, see the description of F0-03 (Main frequency source X selection).Different
running command sources can be bound to the same frequency source.
If a command source has bound to a frequency source, this frequency source set in ，F0-03~F0-07no longer takes
effect when this command source is effective.
F0-28
Serial communication protocol 0: Protocol MODBUS-RTU
0
The use of EM15-SP serial port communication protocol MODBUS.
F1 Motor Parameter
F1-00
Motor type selection
0: General asynchronous motor
1: Variable frequency asynchronous motor
0
F1-01
Rated motor power
0.1kW～1000.0kW
Model
dependent
F1-02
Rated motor voltage
1V～2000V
Model
dependent
F1-03
Rated motor current
0.01A～655.35A(variable frequency drive power≤55kW)
0.1A～6553.5A(variable frequency drive power >55kW)
Model
dependent
F1-04
Rated motor frequency
0.01Hz～maximum frequency
Model
dependent
F1-05
Rated motor rotational speed
1rpm～65535rpm
Model
dependent
Set the parameters according to the motor nameplate no matter whether V/F control or vector control is adopted.
To achieve better V/F or vector control performance, motor auto-tuning is required. The motor auto-tuning
accuracy depends on the correct setting of motor nameplate parameters.
EM15-SP User Manual
5. Description of Function Code
23
F4 Input Terminals
The EM15 provides six digital input (DI) terminals (HDI can be used for high-speed pulse input) and two analog
input (AI) terminals. The optional extension card provides another six DI terminals (DI7 to DI12) and one AI
terminal (AI3).
F4-00
DI1 function selection
1: Forward RUN (FWD)
Standard
F4-01
DI2 function selection
9
Standard
F4-02
DI3 function selection
53
Standard
F4-03
DI4 function selection
51
Standard
F4-04
DI5 function selection
52
Standard
F4-05
DI6 function selection
2
Standard
The following table lists the functions available for the DI terminals.
Value
Function
Description
0
No function
Set 0 for reserved terminals to avoid malfunction.
1
Forward RUN (FWD) or running
command
The terminal is used to control forward or reverse running of the
variable frequency drive.
2
Reverse RUN (REV) or the direction
of FED/REV
4
Forward JOG (FJOG)
FJOG for the JOG forward running, RJOG for the JOG reverse
running.
5
Reverse JOG (RJOG)
8
Free stop
9
Fault reset (RESET)
10
RUN pause
11
Normally open (NO) input of external
fault
33
Normally closed (NC) input of external
fault
36
External STOP terminal 1
44
User-defined fault 1
47
Emergency stop
48
External STOP terminal 2
51
Full-water detection 1
Two probes any access, from the water-full position to maintain a
certain height difference in the installation
52
Full-water detection 2
53
MPPT stop/ Photovoltaic control stop
Into the common speed mode
F4-13
AI curve1 Min.input
0.00V ～ F4-15
0.00V
F4-14
Corresponding setting of AI curve1
Min.input
-100.00% ～ 100.0%
0.0%
F4-15
AI curve1 input maximum value
F4-13 ～ 10.00V
10.00V
F4-16
Corresponding setting of AI curve1
input maximum value
-100.00% ～ 100.0%
100.0%
F4-17
AI1 filter time
0.00s ～ 10.00s
0.10s
These parameters are used to define the relationship between the analog input voltage and the corresponding setting
value.
When analog input voltage is larger than setting” Max. input” (F4-15), Analog voltage should be calculated as ”
Max. input”. The same, When analog input voltage is smaller than setting” Min. input” (F4-13), Analog voltage
should be calculated as ” Min. input” F4-34.
When the analog input is current input, 1 mA current corresponds to 0.5 Volts.
(AI1 filter time) is used to set the software filter time of AI1. If the analog input is liable to interference, increase
5. Description of Function Code
EM15-SP User Manual
24
the value of this parameter to stabilize the detected analog input. However, increase of the AI filter time will slow
down the response of analog detection. Set this parameter properly based on actual conditions.
In different applications, 100% of analog input corresponds to different nominal values. For details, refer to the
description of different applications.
Following tables for reference:
Diagram 5-2 The relationship between analog given and setting value
F4-35
DI1 delay time
0.0s ～ 3600.0s
0.0s
F4-36
DI2 delay time
0.0s ～ 3600.0s
0.0s
F4-37
DI3 delay time
0.0s ～ 3600.0s
0.0s
For setting DI changing status, Inverter’s delay for this actives.
Only DI1、DI2、DI3 has delay time functions
F9 Faults and protection parameters
F9-09
Fault auto reset times
0~20
20
It is used to set the times of fault auto resets if this function is used. After the value is exceeded, the variable
frequency drive will remain in the fault state.
F9-10
Do action selection during
fault auto reset
0: Not act
1: Act
0
It is used to decide whether DO acts during the fault auto reset if the fault auto reset function is used.
F9-11
Time interval of fault auto
reset
0.1s ～ 100.0s
5.0s
is used to set the waiting time from the variable frequency drive alarm to fault auto reset.
F9-12
Input phase loss
protection/contactor
energizing protection
selection
Unit's digit: Input phase loss protection
Ten's digit: Contactor energizing protection
0: Disabled
1: Enabled
00
It is used to determine whether to perform input phase loss or contactor energizing protection.
F9-13
Output phase loss protection
0: Disabled
1: Enabled
0
EM15-SP User Manual
5. Description of Function Code
25
It is used to determine whether to perform output phase loss protection.
F9-14
Fault type
0 ～ 99
00
It is used to record the types of the most recent three faults of the variable frequency drive. 0 indicates no fault.
F9-37
Frequency of fault
It displays the frequency when the latest fault occurs.
F9-38
Current of fault
It displays the current when the latest fault occurs.
F9-39
DC Bus voltage of fault
It displays the DC bus voltage when the latest fault occurs.
F9-40
Input terminals status of
fault
It displays the status of all DI terminals when the latest fault occurs. The
sequence is as follows:
BIT9 BIT8 BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0
DI0
DI9
DI8
DI7 HDI DI5
DI4
DI3
DI2
DI1
If a DI is ON, the setting is 1. If the DI is OFF, the setting is 0. The value
is the equivalent decimal number converted from the DI status.
F9-41
Output terminal status of
fault
It displays the status of all output terminals when the latest fault occurs.
The sequence is as follows:
BIT4 BIT3 BIT2 BIT1 BIT0
DO2 DO1 REL REL FMP
If an output terminal is ON, the setting is 1. If the output terminal is
OFF, the setting is 0. The value is the equivalent decimal number
converted from the DI statuses.
F9-42
variable frequency drive
status of fault
Reserved
F9-43
Power-on time of fault
It displays the present power-on time when the latest fault occurs.
F9-44
Running time of latest fault
It displays the present running time when the latest fault occurs.
FE Solar water pump control parameters
FE-00
PV inverter selection
0: Disabled
1: Enabled
1
If set to 0, inverter will be working as normal variable frequency drive.
FE-01
Vmpp
voltage
reference
selection
0: Manual
1: MPPT Automatic algorithm tracking
1
FE-02
Vmpp voltage manual setting
value
0 - 1000.0V
500.0V
It is for setting solar panels working point voltage Vmpp. Solar water pump’s working theory as below: Vmpp is
selected between FE-01 MPPT running result and FE-02, then output running frequency by CVT controller.
FE-03
Motor Selection
0: General three phase ac motor
1: Single phase motor with capacitor
2: Single phase motor without capacitor
--
0: General three phase ac motor
1: Single phase motor with capacitor
2: Single phase motor without capacitor
5. Description of Function Code
EM15-SP User Manual
26
MPPT
PE-02
CVT
Controller
ref
f
mpp
V
pn
V
PE-01
PE-04~PE-08
PE-10~PE-13
Diagram 5-3 Photovoltaic water pump control schematic
FE-04
CVT proportional gain 1
0.0% - 999.9%
100.0%
FE-05
CVT Integral gain1
0.0% - 999.9%
100.0%
It is CVT controller’s PI parameters，it should be switchover in two groups according to solar cells Vpn voltage ,
switchover point is FE-08V; switchover point FE-08 default as 0.0V. It is for enable the first group parameters,
switchover theory as below diagram:
PE-08
PE-08+50V
K2
K1
KP/KI
Vpn
Diagarm 5-4 Switch the schematic
CVT controller is the core parts for solar water pump control, if any unbalance output frequency, please close
MPPT(select manual reference Vmpp ), then adjust proportional gain or Integral gain till frequency is stable; after
that, open MPPT search again;
FE-10
Mppt search upper limit voltage
0 - 1000.0V
750.0V
FE-11
Mppt search lower limit voltage
0 - 1000.0V
300.0V
FE-12
MPPT search gain
0% - 500%
100%
FE-13
MPPT search time interval
0.0 - 10.0sec
1.0sec
FE-10/FE-11set MPPT search Vmpp’s upper or limit value,FE-12 set search gain, FE-13 set search time interval，If
open MPPT, frequency fluctuation is very large, decrease search gain and increase search time interval to improve
its stability.
FE-31
Full-water detection mode
0: terminal
1: AI1
2: AI2
0
FE-32
Analog full-water detection
Thresholds
0 - 100.0%
25.0%
EM15-SP User Manual
5. Description of Function Code
27
FE-33
detection time of full-water
protection
0 - 30000sec
10sec
FE-34
exit time of full-water
protection
0 - 30000sec
60sec
FE-35
analog sensor damaged
Thresholds
0 - 100.0%
0.0%
FE-31 is for Full-water detection mode.
If set to 0, set any terminals(default DI4/DI5)function code to 51/52，two terminals enabled in same time could
activate Full-water protection and two terminals disabled in same time could activate exit Full-water protection.
One of the terminals enabled, remains its status without any change.
FE-33/FE-34 for detection time of full-water protection and exit time of full-water protection;
FE-35 for analog sensor damaged Thresholds，if FE-31 set to analog detection, and analog feedback is larger than
the setting detectionThreshold value of FE-35. Judge it as analog sensor faults. Display A.Prb, and stop running;
FE-31 set to 0, close sensor faults detection.
FE-36
PV DC correction coefficient
0.0 - 200.0%
100.00%
FE-37
PV DC correction offset
-100.00A - 100.00A
0.00A
As software estimating solar cells’ DC current value, this parameters will correction this estimation value, U0-06
displays correction current, correction formula is U0-06 =(estimation value * FE-36)+ FE-37 ；
FE-38
power curve point 0
0.0kw - 999.9kw
0.5kw
FE-39
power curve point 1
0.0kw - 999.9kw
1.0kw
FE-40
power curve point 2
0.0kw - 999.9kw
1.5kw
FE-41
power curve point 3
0.0kw - 999.9kw
2.0kw
FE-42
power curve point 4
0.0kw - 999.9kw
2.5kw
FE-43
flow curve point 0
0.0 - 999.9m^3/h
0.0 m^3/h
FE-44
flow curve point 1
0.0 - 999.9m^3/h
5.0 m^3/h
FE-45
flow curve point 2
0.0 - 999.9m^3/h
10.0m^3/h
FE-46
flow curve point 3
0.0 - 999.9m^3/h
15.0m^3/h
FE-47
flow curve point 4
0.0 - 999.9m^3/h
20.0m^3/h
According output power(U0-05) calculate output flow speed(U0-13), User reference(P-Q curve), input to FE-38～
FE-47, software automatically calculate U0-13；Generally, P-Q curve as below:
]
/
[
3 h
m
Q
]
[KW
P
Diagram 5-5 P-Q curve
5. Description of Function Code
EM15-SP User Manual
28
FP User password parameters
FP-00
User password
0 ～ 65535
0
If it is set to any non-zero number, the password protection function is enabled. After a password has been set and
taken effect, you must enter the correct password in order to enter the menu. If the entered password is incorrect
you cannot view or modify parameters.
If FP-00 is set to 00000, the previously set user password is cleared, and the password protection function is
disabled.
FP-01
restore default settings
0: No operation
1: Restore default settings except motor parameters and
accumulation record.
2: Clear records
4: Back up present user parameters
501: Restore user backup parameters
0
1. Restore default settings except motor parameters
If FP-01 is set to 1, most function codes are restored to the default settings except motor parameters, frequency
command resolution (F0-22, fault records, accumulative running time (F7-09), accumulative power-on time (F7-13)
and accumulative power consumption (F7-14).
2. Clear records
If FP-01 is set to 2, the fault records, accumulative power-on time (F7-13), accumulative running time (F7-09), and
accumulative power consumption (F7-14) are cleared.
4. Back up present user parameters
the present parameter settings are backed up, helping you to restore the setting if incorrect parameter setting is
performed.
501. Restore user backup parameters
If FP-01 is set to 4, the previous backup user parameters are restored.
FP-04
Parameter modification
property
0: Modifiable
1: Not modifiable
0
It is used to set whether the parameters are modifiable to avoid mal-function. If it is set to 0, all parameters are
modifiable. If it is set to 1, all parameters can only be viewed.
EM15-SP User Manual
6. Fault Diagnosis and solution
29
6. Fault Diagnosis and Solution
6.1 Fault Alarm and Countermeasures
EM15-SP VFD has 35 types of warning information and protection function. In case of abnormal fault, the
protection function will be invoked, the inverter will stop output, and the faulty relay contact of the
inverter will start, and the fault code will be displayed on the display panel of the inverter. Before
consulting the service department, the user can perform self-check according to the prompts of this chapter,
analyze the fault cause and find out t solution. If the fault is caused by the reasons as described in the dotted
frame, please consult the agents of inverter or our company directly. Among the 35 types of warning
information, Err22 is hardware over current or over voltage signal. In most cases, the hardware over
voltage fault will cause Err22 alarm.
Table 7-1 Common faults and solution of the variable frequency drive
Fault Code
Err01
Fault Type
Inverter unit protection
1: The output circuit is grounded or short circuited.
2: The connecting cable of the motor is too long.
3: The IGBT overheat.
4: The internal connections become loose.
5: The main control board is faulty.
6: The drive board is faulty.
7: The inverter IGBT is faulty.
1: Eliminate external faults.
2: Install a reactor or an output filter.
3: Check the air filter and the cooling fan.
4: Connect all cables properly.
5: Ask for technical support
6: Ask for technical support
7: Ask for technical support
Fault Code
Err02/Err04
Fault Type
Over current during acceleration/ at constant speed
1: The output circuit is grounded or short circuited.
2: Motor auto-tuning is not performed.
3: The acceleration time is too short.
4: Manual torque boost or V/F curve is not appropriate.
5: The voltage is too low.
6: The startup operation is performed on the rotating
motor.
7: A sudden load is added during acceleration.
8: The variable frequency drive model is of too small
power class.
1: Eliminate external faults.
2: Perform the motor auto- tuning.
3: Increase the acceleration time.
4: Adjust the manual torque boost or V/F curve.
5: Adjust the voltage to normal range.
6: Select rotational speed tracking restart or start the
motor after it stops.
7: Remove the added load.
8: Select a variable frequency drive of higher power
class.
Fault Code
Err03
Fault Type
Over current during deceleration
1: The output circuit is grounded or short circuited.
2: Motor auto-tuning is not performed.
3: The deceleration time is too short.
4: The voltage is too low.
5: A sudden load is added during deceleration.
6: The braking unit and braking resistor are not
installed.
1: Eliminate external faults.
2: Perform the motor auto-tuning.
3: Increase the deceleration time.
4: Adjust the voltage to normal range.
5: Remove the added load.
6: Install the braking unit and braking resistor.
Fault Code
Err05/ Err06
Fault Type
Overvoltage during acceleration/deceleration
1: The input voltage is too high.
2: An external force drives the motor during
acceleration.
3: The acceleration/deceleration time is too short.
4: The braking unit and braking resistor are not
installed.
1: Adjust the voltage to normal range.
2: Cancel the external force or install a braking resistor.
3: Increase the acceleration/deceleration time.
4: Install the braking unit and braking resistor.
Fault Code
Err07
Fault Type
Overvoltage at constant speed
1: The input voltage is too high.
2: An external force drives the motor during
deceleration.
1: Adjust the voltage to normal range.
2: Cancel the external force or install the braking
resistor.
Fault Code
Err08
Fault Type
Control power supply fault
The input voltage is not within the allowable range.
Adjust the input voltage to the allowable range.
6. Fault Diagnosis and solution
EM15-SP User Manual
30
Fault Code
Err09
Fault Type
Low voltage
1: Instantaneous power failure occurs on the input
power supply.
2: The frequency inverter's input voltage is not within
the allowable range.
3: The DC bus voltage is abnormal.
4: The rectifier bridge and buffer resistor are faulty.
5: The drive board is faulty.
6: The main control board is faulty.
1: Reset the fault.
2: Adjust the voltage to normal range.
3: Ask for technical support
4: Ask for technical support
5: Ask for technical support
6: Ask for technical support
Fault Code
Err10
Fault Type
variable frequency drive overload
1: The load is too heavy or locked- rotor occurs on the
motor.
2: The variable frequency drive model is of too small
power class.
1: Reduce the load and check the motor and mechanical
condition.
2: Select a variable frequency drive of higher power
class.
Fault Code
Err12
Fault Type
Power input phase loss
1: The three-phase power input is abnormal.
2: The drive board is faulty.
3: The lightningproof board is faulty.
4: The main control board is faulty.
1: Eliminate external faults.
2: Ask for technical support.
3: Ask for technical support.
4: Ask for technical support.
Fault Code
Err13
Fault Type
Power output phase loss
1: The cable connecting the variable frequency drive
and the motor is faulty.
2: The frequency inverter's three-phase outputs are
unbalanced when the motor is running.
3: The drive board is faulty.
4: The IGBT module is faulty.
1: Eliminate external faults.
2: Check whether the motor three phase winding is
normal.
3: Ask for technical support.
4: Ask for technical support.
Fault Code
Err14
Fault Type
IGBT Module overheat
1: The ambient temperature is too high.
2: The air filter is blocked.
3: The fan is damaged.
4: The thermally sensitive resistor of the IGBT module
is damaged.
5: The inverter IGBT module is damaged.
1: Lower the ambient temperature.
2: Clean the air filter.
3: Replace the damaged fan.
4: Replace the damaged thermally sensitive resistor.
5: Replace the inverter module.
Fault Code
Err15
Fault Type
External equipment fault
1: External fault signal is input via DI.
2: External fault signal is input via virtual I/O.
1: Reset the operation.
2: Reset the operation.
Fault Code
Err16
Fault Type
Communication fault
1: The host computer is in abnormal state.
2: The communication cable is faulty.
3: The communication extension card is set improperly.
4: The communication parameters in group bA are set
improperly.
1: Check the cabling of host computer.
2: Check the communication cabling.
3: Set the communication extension card correctly.
4: Set the communication parameters properly.
Fault Code
Err18
Fault Type
Current detection fault
1: The HALL device is faulty.
2: The drive board is faulty.
1: Replace the faulty HALL device.
2: Replace the faulty drive board.
Fault Code
Err22
Fault Type
variable frequency drive hardware fault
1: Overvoltage exists.
2: Over current exists.
1: Handle based on over voltage.
2: Handle based on over current.
Appendix I. Modbus communication protocol
ATO-EM15-SP VFD provides RS485 communication interface, and adopts MODBUS communication protocol.
User can carry out centralized monitoring through PC/PLC to get operating requirements. And user can set the
running command, modify or read the function codes, the working state or fault information of variable frequency
drive by Modbus communication protocol.
I. About Protocol
This serial communication protocol defines the transmission information and use format in the series
communication and it includes master-polling (or broadcasting) format, master coding method and the content
includes function code of action, transferring data and error checking. The response of slave is the same structure,
and it includes action confirmation, returning the data and error checking etc. If slave takes place the error while it
is receiving the information or cannot finish the action demanded by master, it will send one fault signal to master
as a response.
II. Application Methods
The variable frequency drive will be connected into a “Single-master Multi-slave” PC/PLC control net with RS485
bus as the communication slave.
III. Bus structure
1) Hardware interface.
The “485+” and “485-“terminals on variable frequency drive are the communication interfaces of Modbus
2) Topological mode
It is a “Single-master Multi-slave” system. In this network, every communication machine has a unique slave
address. One of them is as “master” (usually PC host machine, PLC and HMI, etc.), actively sends out the
communication, to read or write the parameters of slave. Other machines will be used as slave and response to the
inquiry/command from master. At one time only one machine can send the data and other machines are in the
receiving status. The setup range of slave address is 0 to 247. Zero refers to broadcast communication address. The
address of slave must is exclusive in the network.
3) Transmission mode
There provide asynchronous series and half-duplex transmission mode. In the series asynchronous communication,
the data is sent out frame by frame in the form of message. According to the Modbus-RTU protocol, when the free
time of no transmission in communication data lines is more than the transmission time of 3.5byte, it indicates that
a new start of communication frame.
EM15 series inverter has built-in the Modbus-RTU communication protocol, and is applicable to response the slave
“Inquiry/command” or doing the action according to the master’s “Inquiry / Command” and response to the data.
Here, master is personnel computer (PC), industrial machine or programmable logical controller (PLC), and the
slave is inverter. Master not only visits some slave, but also sends the broadcast information to all the slaves. For
the single master “Inquiry/Command”, all of slaves will return a signal that is a response; for the broadcast
6. Fault Diagnosis and solution
EM15-SP User Manual
32
information provided by master, slave needs not feedback a response to master machine.
Communication data structure
Modbus protocol communication data format of EM15 series inverter is shown as following. The inverter only
support the reading and writing of Word type parameters, the corresponding reading operation command is “0x03”,
the writing operation command is “0x06”. The writing and reading operation of byte or bit is not supported.
Target
station
address
Read the
command
(0x03)
Function code
address
(H……L)
Number
of
function
code(n)
CRC
correction and
L……H
Free
>3.5Byte
1Byte
1Byte
2Byte
2Byte
2Byte
Calculate CRC
correction
Master reads
command frame
Free
(Start frame)
In theory, the host computer can continuously read several function codes once (that is, the maximum value of “n”
is 12), but note that not to jump across the last function code in this function group to avoid the wrong reply.
Target
station
address
Read the
command
(0x03)
Function code
address
(H……L)
Number
of Data
type(2n)
CRC
correction and
L……H
Free
>3.5Byte
1Byte
1Byte
(2n)Byte
1Byte
2Byte
Calculate CRC
correction
Free
(Start frame)
Slave reads
response frame
Target
station
address
Write the
command
(0x06)
Function code
address
(H……L)
CRC
correction and
L……H
Free
>3.5Byte
1Byte
1Byte
2Byte
2Byte
Calculate CRC
correction
Master writes
command frame
Free
(Start frame)
Function code
parameter
(H……L)
2Byte
Target
station
address
Write the
command
(0x06)
Function code
address
(H……L)
CRC
correction and
L……H
Free
>3.5Byte
1Byte
1Byte
2Byte
2Byte
Calculate CRC
correction
Slave writes
response frame
Free
(Start frame)
Function code
parameter
(H……L)
2Byte
If the wrong communication frame was detected by the salve or other reasons caused the failure of reading and
writing, the wrong frame will be replied.
Target
station
address
Read the
command
(0x83)
Error type
CRC
correction and
L……H
Free
>3.5Byte
1Byte
1Byte
1Byte
2Byte
Calculate CRC
correction
Slave reads and
response error
frame
Free
(Start frame)
Target
station
address
Write the
command
(0x86)
Error type
CRC
correction and
L……H
Free
>3.5Byte
1Byte
1Byte
1Byte
2Byte
Calculate CRC
correction
Slave writes and
response error
frame
Free
(Start frame)
Error types：
01-Command code error
02-Address error
03-Data error
04-Command cannot to process
RTU frame format
Frame start (START)
More than the 3.5- character time
Slave address(ADR)
Communication address:1 to 247(0: broadcast address)
Command code(CMD)
03: Read slave parameters
06: Write slave parameters
Function code address(H)
It indicates the external parameter address of variable frequency drive in
hexadecimal format;
There are functional code or non-functional code (such as running state
parameter/ running command parameters) type parameters, for details see the
address definition.
During the transmission, high bit is put in the front, and low bit is at the back.
Function code address(L)
Number of function code(H) It indicates the number of function code ready by the frame. If it is “1”, then it
indicates that it reads one function code. During the transmission, high bit is
put in the front, and low bit is at the back.
Only one function code can be modified at one time without the field.
Number of function code(L)
Data(L)
It indicates the replying data or the data waiting to write-in. During the
transmission, high bit is put in the front, and low bit is at the back.
Data(H)
END
3.5- character time
CRC Checking
In RTU mode, messages include an error-checking field that is based on a CRC method. The CRC field checks the
contents of the entire message. The CRC field is two bytes, containing a16-bit binary value. The CRC value is
calculated by the transmitting device, which appends the CRC to the message. The receiving device recalculates a
CRC during receipt of the message, and compares the calculated value to the actual value it received in the CRC
field.
If the two values are not equal, that means transmission is error
The CRC is started by 0xFFFF.Then a process begins of applying successive eight-bit bytes of the message to the
current contents of the register. Only the eight bits of data in each character are used for generating the CRC. Start
and stop bits, and the parity bit, do not apply to the CRC. During generation of the CRC, each eight-bit character is
exclusive ORed with the register contents. Then the result is shifted in the direction of the least significant bit
(LSB), with a zero filled into the most significant bit (MSB) position. The LSB is extracted and examined. If the
LSB was a 1, the register is then exclusive ORed with a preset, fixed value. If the LSB was a 0, no exclusive OR
takes place. This process is repeated until eight shifts have been performed. After the last (eighth) shift, the next
eight-bit byte is exclusive ORed with the register's current value, and the process repeats for eight more shifts as
described above. The final contents of the register, after all the bytes of the message have been applied, is the CRC
value.
6. Fault Diagnosis and solution
EM15-SP User Manual
34
When the CRC is appended to the message, the low-order byte is appended first, followed by the high-order byte.
unsigned int crc_chk_value(unsigned char *data_value,unsigned char length
{
unsigned int crc_value=0xFFFF;
int i;
while(length--)
{
crc_value^=*data_value++;
for(i=0;i<8;i++)
{
if(crc_value&0x0001)
{
crc_value=(crc_value>>1)^0xa001;
}
else
{
crc_value=crc_value>>1;
}
}
}
return(crc_value);
}
Definition of communication parameter address
Read and write function-code parameters (Some functional code is not changed, only for the manufacturer use.)
The group number and mark of function code is the parameter address for indicating the rules.
High level bytes: F0~FF(Group F), A0~AF(GroupA), 70-7F(Group U)
Low level bytes: 00 ~ FF
For example: F3-12, address indicates to 0xF30C.
Note: Group U: Only for reading parameter, cannot be changed parameters.
Some parameters cannot be changed during operation, some parameters regardless of what kind of state the inverter
in, the parameters cannot be changed. Change the function code parameters, pay attention to the scope of the
parameters, units, and relative instructions.
Function code group
Communication inquiry address
Inquiry address When
Communication modifies RAM
F0~FE
0xF000~ 0xFEFF
0x0000~ 0x0EFF
A0~FC
0xA000~0xACFF
0x4000~0x4CFF
U0
0x7000~ 0x70FF
Besides, due to EEPROM be frequently stored, it will reduce the lifetime of EEPROM. In the communication mode,
and some function codes don’t have to be stored as long as change the RAM value.
Stop/start parameter
Parameter
address
Parameter description
Parameter
address
Parameter description
1000H
Communication set value(-10000 ~
10000)(Decimal)
1010H
PID setting
1001H
Running frequency
1011H
PID feedback
1002H
DC Bus voltage
1012H
PLC process
1003H
Output voltage
1013H
Pulse input frequency, unit: 0.01KHz
1004H
Output current
1014H
Feedback speed, unit:0.1Hz
1005H
Output power
1015H
Remaining running time
1006H
Output torque
1016H
Voltage before AI1correction
1007H
Running speed
1017H
Voltage before AI2correction
1008H
DI input terminal
1018H
Voltage before AI3correction
1009H
DO output terminal
1019H
Linear speed
100AH
AI1 voltage
101AH
Present power-on time
100BH
AI2 voltage
101BH
Present running time
100CH
AI3 voltage
101CH
Pulse input frequency, unit:1Hz
100DH
Counting value input
101DH
Communication setting value
100EH
Length value input
101EH
Actual feedback speed
100FH
Load speed
101FH
Main frequency X display
1020H
Auxiliary frequency Y display
Note: Communication setting value is the percentage of relative value, 10000 corresponds to 100%, -10000
correspond to -100.00%.
Control command input variable frequency drive: (write in only)
Command word address
Command function
2000H
0001: Forward running
0002: Reverse running
0003: Forward jog
0004: Reverse jog
0005: Free stop
0006:Decelarating stop
0007: Fault reset
Read inverter status: (read only)
Command word address
Command function
3000H
0001: Forward running
0002: Reverse running
0003: Stop
Parameter locking password collation: (If the feedback is the 8888H, it indicates the password collation passed)
Password address
Contents of input password
1F00H
*****
Digital output terminal control: (write in only)
Address Of locking password command
Contents of locking password command
2001H
BIT0: DO1 output control
BIT1: DO2 output control
BIT2: Relay 1 output control
BIT3: Relay 2 output control
BIT4: FMR output control
BIT5: VDO1
BIT6: VDO2
BIT7: VDO3
BIT8: VDO4
BIT9: VDO5
6. Fault Diagnosis and solution
EM15-SP User Manual
36
Analog output AO1 control: (write in only)
Command word address
Command function
2002H
0~7FFF indicates 0%~100%
Analog output AO2 control: (write in only)
Command word address
Command function
2003H
0~7FFF indicates 0%~100%
Pulse output control: (write in only)
Command word address
Command function
2004H
0~7FFF indicates 0%~100%
Inverter fault description:
Inverter fault
description
Inverter fault information
8000H
0000: No fault
0001: Reserved
0002: acceleration over current
0003: deceleration over current
0004: Constant speed over current
0005: acceleration over voltage
0006: deceleration over voltage
0007:Constant speed over voltage
0008: Buffer resistor fault
0009: less voltage fault
000A:variable frequency drive
overload 000B: Motor overload
000C: Input phase failure
000D: Output phase failure
000E: IGBT overheat
000F: External equipment fault
0010: Communication fault
0011: Contactor fault
0012: Current detection fault
0013: Motor auto-tuning fault
0014: Encoder/PG fault
0015: EEPROM read-write in fault
0016: variable frequency drive hardware
fault 0017: Short circuit to ground fault
0018: Reversed
0019: Reversed
001A: Accumulative running time reached
001B: User-defined fault 1
001C: User-defined fault 2
001D: Accumulative power-on time reached
001E: Off load
001F: PID lost during running
0028: fast current limit fault
0029: Motor switchover fault during
running
002A: Too large speed deviation
002B: Motor over-speed
002D: Motor overheat
005A: Encode lines setting fault
005B: Not connect to the encoder
005C: Initial location fault
005E: Speed feedback fault
Group Fd Communication parameters
Code
Parameter Name
Setting Range
Default
Fd-00
Baud ratio setting
Unit's digit: Modbus baud ratio.
5
0: 300 BPS
1: 600 BPS
2: 1200 BPS
3: 2400 BPS
4: 4800 BPS
5: 9600 BPS
6: 19200 BPS
7: 38400 BPS
8: 57600 BPS
9: 115200 BPS
This parameter is used to set the data transfer rate from host computer and the variable frequency drive. Please
note that baud ratio of the host computer and the inverter should be consistent. Otherwise, the communication is
impossible. The higher the baud ratio is, the faster the communication is.
Code
Parameter Name
Setting Range
Default
Fd-01
Modbus Data format 0: No check, data format <8,N,2>
1: Even parity check, data format<8,E,1>
0
Code
Parameter Name
Setting Range
Default
2: Odd Parity check, data format<8,O,1>
3: No check, data format <8,N,1>
The host computer and variable frequency drive setup data format must be consistent, otherwise,
communication is impossible.
Code
Parameter Name
Setting Range
Default
Fd-02
Broadcast address
0~247 (0: Broadcast address)
1
When the local address is set to 0, that is, broadcast address, it can realize the broadcast function of host computer.
Code
Parameter Name
Setting Range
Default
Fd-03
Modbus response time 0~20 ms
2 ms
Response delay time: it refers to the interval time from the inverter finishes receiving data to sending data to the
host machine. If the response time is less than the system processing time, then the response delay time is based on
the time delay of the system processing time. If the response delay time is more than the system processing time,
after the system processes the data, it should be delayed to wait until the response delay time is reached, then
sending data back to host machine.
Code
Parameter Name
Setting Range
Default
Fd-04
Communication
timeout
0.0s:invalid
0.1s~60.0s
0.0s
When the function is set to 0.0s, the communication interface timeout parameter is invalid.
When the function code is set to time value, if the interval time between the communication and the next
communication is beyond the communication timeout, the system will report communication failure error (Err16).
At normal circumstances, it will be set as invalid. If in the continuous communication system, set this parameter,
you can monitor the communication status.
Code
Parameter Name
Setting Range
Default
Fd-05
Modbus protocol data
transmission format
selection
Unit's digit: Modbus protocol.
0: Non-standard Modbus protocol
1: Standard Modbus protocol
1
Fd-05=1: Select standard Modbus protocol.
Fd-05=0: When reading the command, the slave machine return is one byte more than the standard Modbus
protocol’s, for details, refer to communication data structure of this protocol.
Code
Parameter Name
Setting Range
Default
Fd-06
Communication
reading current
resolution
0: 0.01A
1: 0.1A
0
It is used to confirm the unit of current value when the communication reads the output current.
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