The double-pump control unit ZPS2 is used predominantly for adjusting the liquid level. The use of different sensors for level gathering is possible:
: float switches, impact tubes, external 4-20mA-sensors, solenoid-operated Reed-switches. You can choose the type of sensor in the controller program.
Then you are able to pilot both pumps by a motor contactor directly. The change of the pump in operation is possible time controlled or level controlled.
Two adjustable high-load levels allow the operation of both pumps at once. Furthermore some devices for failure indication are available: akustic sensors or relays. Safety circuits such as
switch-on- or switch-off-delay, motor current monitoring and floodwater sensors ensure a safe operation of the pump system.
The double pump control unit ZPS2 is assembled on behalf of the company Zehnder Pumpen