CU 301 Control unit No. 96436753
The Grundfos CU 301 is a control and communication unit developed for the SQE
submersible pumps for applications where a constant pressure is required.
The CU 301 provide full control of the SQE pumps and enables the system to
maintain a constant pressure within the maximum pump performance in spite of a
varying water consumption. The pressure is registered by the pressure sensor
and transmitted to the CU 301. The CU 301 adjusts the pump performance
accordingly.
The CU 301 control unit provides the following:
Two-way communication with the SQE pumps.
Possibility of adjusting the pressure. (Pressure sensor not included)
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 301 communicates with the pump via mains-borne signaling
Power Line Communication), meaning that no extra cables are required between
the CU 301 and the pump.
The CU 301 indicates the following alarms:
No contact,
Overvoltage,
Undervoltage,
Dry running,
Speed reduction,
Overtemperature.
Overload,
Sensor alarm. The CU 301 incorporates the external signal input for
pressure sensor and connection to an operating relay for enabling aeration or
chlorination during pump operation. As well a safety relay to disconnect the
SQE submersible pump during communicating failure, it will then operate in
pressure switch mode if the pump is still running and until communication to
the pump has been restored.
The CU 301 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.
External sensors: Reception of data from external sensors and control
according to the data received from the pressure sensor.
Electrical data: Mains frequency: 50 / 60 Hz Rated voltage: 1 x 100-240 V
Others: Danish VVS No.: 388449701 Norwegian NRF no.: 9041361
Controls Unit 2 - 5 bar