When wiring - as long as the ground wire to pump is located in correct position on the CU 200 controller - the two power wires can be connected in either terminal.
The Green/Yellow wire is ground, and the Blue and Brown wires are the power wires for the Grundfos Pump. It does not matter which way the two wires are connected on the CU200. As long as the ground wire to Grundfos pump is located in correct position on CU200 controller then the two power wires can be connected in either terminal.The CU 200 is a combined status, control and
communication unit especially developed for the
SQFlex system. The CU 200 also enables connection
of a level switch.
The CU 200 incorporates cable entries for
power supply connection
pump connection
earth connection
level switch connection
Communication between the CU 200 and the pump takes place via the pump power supply cable. This is
called mains borne signalling (or Power Line Communication), and this principle means that no extra
cables between the CU 200 and the pump are required. It is possible to start, stop and reset the pump with the on/off button
The CU 200 offers system monitoring alarm indication.
The following indications allow the operation of the pump to be monitored:
water reservoir is full (level switch) pump is running input power
The CU 200 offers the following alarm indications: dry running service needed in case of no contact to pump overvoltage over-temperature overload.
In addition, the CU 200 shows the symbols of the energy supply options.