SQFlex data booklet

CU 200 SQFlex control unit
CU 200 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
1400 W and maximum 8.4 A.
CU 200 incorporates cable entries for the following
connections:
• power supply (pos. 6)
• pump (pos. 7)
• earth (pos. 8)
• level switch (pos. 9).
The communication between CU 200 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 200 and the
pump.
Start, stop and reset the pump with the ON/OFF button
(pos. 1).
CU 200 ensures system monitoring and alarm indication.
The operation can be monitored through the following
indications:
• water reservoir full (level switch) (pos. 2)
• pump running (pos. 3)
• input power (pos. 11).
CU 200 indicates the following alarms:
• dry running (pos. 10)
• service needed (pos. 5):
- no contact to the pump
- overvoltage
- overtemperature
- overload.
In addition, CU 200 shows the symbols of the energy supply
options (pos. 4).
6
10
3
4
2 1
11
987
5
TM022325
CU 200 elements
kWatt
199mm (7.83 in)
263 mm (10.35 in)
95 mm
(3.75 in)
TM078601
Dimensions, CU 200
GND IN
F1 = OVERVOLTAGE
F2 = OVERTEMP
F3 = NO CONTACT
F4 = OVERLOAD
CONTROL INDICATOR
MAX SPEED
+24 V
+10 V
+5 V
LEVEL SWITCH
POWER PUMP
PE PE PE
GND IN
F1 = OVERVOLTAGE
F2 = OVERTEMP
F3 = NO CONTACT
F4 = OVERLOAD
CONTROL INDICATOR
MAX SPEED
+24 V
+10 V
+5 V
LEVEL SWITCH
TM022515
Electrical connections, CU 200
Level switch input
High water level: Contact is closed.
Low water level: Contact is open.
SQFlex
4
20
System components