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# CCT PLC PROGRAM NOTES
200204
ADDING NIGHT TIME PID LOOPS FOR BOTH CL2 AND BISUL
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use deadband to allow a "range" of ORP, rather than a firm setpoint
CALCULATE BASELINE DOSAGE [ OR JUST ENTER A BASELINE PUMP OUTPUT ]
SET PUMP OUTPUT TO FEED THAT DOSAGE
WAIT
INCREASE OR DECREASE OUTPUT BY Z% AFTER Xsec
WHEN THE PV IS WITHIN Y% OF SP, ENABLE PID
IF THE PV IS OUTSIDE OF Y% FOR Xmin ADD OR SUBTRACT BIAS
ETHERNET I/P I/O ASSIGNMENTS FOR E+H UNITS
AI1=AE-110a ORP mV
AI2=AE-110a TEMP DEG C.
AI3=AE-110b ORP mV
AI4=AE-110B TEMP DEG C
DI1=ALARM RELAY