Content
# RW PUMP CONTROL PLANNING
FUNCTION - PUMP TO RESERVOIR
POWER UP - CLEAR STATE TO 0
FLOW TO RESERVOIR ENABLE FROM SCADA
SELECT PUMP (DEFAULT IS PUMP 1)
OPEN RESERVOIR VALVE TO SET POSITION
VERIFY POSITION = SETTING
SEND START SIGNAL TO SELECT PUMP
START PID CONTROL OF SELECT PUMP SPEED
ABNORMAL STOP PUMPING IF SYSTEM FAULT, SELECT PUMP NO LONGER AVAILABLE, RW TANKS LOW LEVEL
LATCH OFF UNTIL RESET BY OPERATOR
NORMAL STOP IF PROCESS DISABLED FROM SCADA
STOP PUMPS
CLOSE VALVE
RETURN TO BEGINING
SELECT PUMP SUBFUNCTION
SCADA SELECTION OF PUMP 1,2,OR 3 SETS BITS
MORE THAN ONE PUMP IS SELECTABLE
VALVE CONTROL FUNCTION
AUTO CONTROL-
RECEIVE COMMAND TO OPEN
LATCH
RESET CLOSE
OPEN VALVE UNTIL POSITION = SETPOINT +/- 1
IF SETPOINT CHANGES TO GRT CURRENT POSITION THEN OPEN MORE
IF SETPOINT CHANGES TO LST CURRENT POSITION THEN
CLOSE UNTIL POSITION = SETPOINT +/- 1
RECEIVE COMMAND TO CLOSE
LATCH
RESET OPEN
CLOSE VALVE UNTIL CLOSED LIMIT SWTICH =1
SET 'VALVE OPEN TO SETPOINT BIT' WHEN TRUE
SET 'VALVE IS CLOSED BIT' WHEN TRUE
MANUAL SCADA CONTROL-
ISSUE COMMAND TO OPEN WHEN SCADA 'OPEN' BIT = 1
ISSUE COMMAND TO CLOSE WHEN SCADA 'CLOSE' BIT = 1
PRESSURE CONTROL
SELECT PUMPS FOR PRESSURE CONTROL
VERIFY PSI SETPOINT IS WITHIN RANGE
VERIFY SELECT PUMPS ARE READY
VERIFY DIST VALVE IS OPEN(FUTURE)
RECEIVE ENABLE CMD FROM SCADA
BEGIN START/STOP & LEAD/LAG SUBFUNCTION