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System components
CU 200
The CU 200 control unit is a combined status, control
and communication unit specifically developed for the
SQFlex system. Furthermore, the CU 200 enables
connection of a level switch.
The CU 200 incorporates cable entries for ...
• power supply connection (pos. 6),
• pump connection (pos. 7),
• earth connection (pos. 8),
• level switch connection (pos. 9).
(The position numbers shown in brackets refer to the
drawing to the right).
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 Communi-
cation), 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 by means
of the on/off button (pos. 1).
The CU 200 control unit offers:
• System monitoring
• Alarm indication.
The following indications allow the operation of the
pump to be monitored:
• Water reservoir is full (level switch) (pos. 2)
• Pump is running (pos. 3)
• Input power (pos. 11).
The CU 200 offers the following alarm indications:
• Dry running (pos. 10)
• Service needed (pos. 5) in case of:
- No contact to pump
- Overvoltage
- Overtemperature
- Overload.
In addition, the CU 200 shows the symbols of the
energy supply options (pos. 4).
18
4
5
6
Dimensions, CU 200
10.5"
Dimensions stated in inches.
SQFlex
3
2
1
11
10
8
9
7
3.75"
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