Grundfos CU 200 SQFlex Solar and Wind Control Box with Float Switch Terminals

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
– overtemperature
– overload.
In addition, the CU 200 shows the symbols of the
energy supply options