To control water levels in dams and reservoirs over long distances.
One Float Switch – 2 wire control
When the float contact is closed between terminals 5+7, the relay is energised.
On opening the float contacts the relay will de-energise.
Two Float Switch – 3 wire control:
For correct operation the Stop float must first close between terminals 6+7.
On this closure the Stop relay (STR) energises and makes contact between terminals 2+8.
The Start float is connected between 5+6 and on closure energises the ON relay.
This relay remains energised until the Stop float opens between 6+7.
The ON and STR relays are then both de-energised.
The STR relay is used for switching the electrical supply ON or OFF to the pump relay circuitry in the control panel.
Float terminal volts = 24V DC.
Distance: up to 4 km using 1.5mm copper wire/cable.
If more than one DCU is installed, interconnection of the outputs must be avoided.
