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PLC Water Treatment: Levels, Lead/Lag Pumps and Dosing

September 12, 2026January 18, 2024 by PLC

Timing chart of lead and lag pump alternation: the lead call starts pump 1, the lag call brings in pump 2 at high level, and on the next cycle pump 2 takes the lead

Wet well level control, pump alternation that shares the wear, chlorine dosing with long dead time, and remote sites over cellular Modbus that go quiet.

Categories Articles Tags lead lag, modbus tcp, PID, wastewater, water treatment

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