Grundfos CU 202 SQFlex control unit suitable for Solar Pumps

CU 202 is designed for monitoring and controlling SQFlex submersible pumps in solar applications.

CU 202 is a combined status, control and communication unit designed for the SQFlex system. It can be connected to a level switch and is designed for SQFlex power range up to 2500 W and maximum 12.5 A. 

CU 202 incorporates cable entries for the following connections:

 • power supply 

• pump 

• configurable IO ports TM022217 TM022437

 • protective earth. 

The communication between CU 202 and the pump is ensured through the power supply cable. This is called mains-borne signaling (or power line communication), which does not require extra cables between CU 202 and the pump. 

CU 202 ensures system monitoring and alarm indication. The operation can be monitored through the following indications: 

• water reservoir full (level switch)

 • pump running 

• input power. 

CU 202 indicates a number of alarms, including: 

• dry running 

• service needed:

- no contact to the pump

- overvoltage

- overtemperature

- overload

Applications:

• Villages, schools, hospitals, single-family houses

• Farms and greenhouses

• Game parks and game farms

• Conservation areas  

Features and benefits:

• Energy supply from solar modules, wind turbine, generator, or batteries

• Maximum power point tracking, MPPT

• Simple installation

• Reliable water supply

• Maintenance-free

• Expansion possibilities

• Cost-efficient pumping

• Dry-running protection

 CU 202 Data sheet 

 Instructions Manual
Information Guide