Product Manual

SQ, SQE construction
SQ, SQE, CU 331, and SP
9
32
CU 300
The CU 300 is a control and communication unit
developed especially for the SQE submersible pumps
for control applications other than constant pressure.
The CU 300 control unit provides:
• Flexible pump control based on various sensor
inputs
• two-way communication with the SQE pumps
• alarm indication of pump operation by LED's on the
front
• possibility of starting, stopping and resetting the
pump simply by means of a push-button
• communication with R100 remote control.
The CU 300 communicates with the pump via mains
borne signalling (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 output for external alarm indication
• control according to the signals received, e.g. of
flow, pressure, water level and conductivity.
Fig. 18 CU 300 control unit with R100
Fig. 19 CU 300 control unit, external entry ports
Fig. 20 CU 300 dimensions
R100 remote control
Wireless infrared remote control of the CU 300 is
possible by means of the R100.
Using the R100, it is possible to monitor and change
the operating parameters, see the R100 menu
structure on page 33.
The R100 is a valuable tool in case fault finding is
required.
TM01 2760 4801TM01 2761 4801TM01 2781 2010
LED alarm
indication
On/Off button with
red and green
indicator lights
IR communication
R100
Power supply entry
Submersible drop
cable entry
Extra cable
entries
Fieldbus
entry
Sensor
entries
9.14 in.
(232 mm)
4.49 in.
(114 mm)
7.68 in.
(195 mm)