CU 300

The Grundfos CU 300 is a control and communication unit especially developed for the SQE submersible pumps in various applications.

The CU 300 provide full control of the SQE pumps and is ideal for applications where a constant water table, manual speed control or emptying or filling of a tank is needed.

The CU 300 control unit provides the following:

  • Easy adjustment to a specific borehole.
  • Two-way communication with the SQE pumps.
  • Alarm indication of pump operation by diodes on the front.
  • Possibility of starting, stopping and resetting the pump simply by means of a push-button.

The CU 300 communicates with the pump via mains-borne signaling (Power Line Communication), meaning that no extra cables are required between the CU 300 and the pump.

The following alarms can be indicated by the CU 300:

  • No contact
  • Overvoltage
  • Undervoltage
  • Dry running
  • Speed reduction
  • Overtemperature
  • Overload
  • Sensor alarm

The CU 300 incorporates external signal input for two analog sensors and one digital sensor, relay outputs for external alarm indication and control according to the signals received, for example of flow, pressure, water level and conductivity.

The CU 300 enables the use of:
Grundfos GO via Grundfos GO MI 204 (dongle for Apple devices with lightning connectors) or Grundfos GO MI 301 (Bluetooth dongle for Apple or Android devices): Wireless infra-red remote control by means of Grundfos GO enables change of factory settings and monitoring of the installation by calling up actual operating data, e.g.
speed, operating hours and power consumption.

The built-in GENIbus port enables the possibility of connecting the system to the Grundfos Remote Management (GRM) system. A secure remote management system that lets the user monitor and manage the pump installations via an online connection and provides remote access to data and alarms.