Wilo SC-Booster SC Notice De Montage Et De Mise En Service page 78

Connection of pump control signal (SCe version
only)
The analogue control signals of the pumps
(0-10 V) can be connected to the terminals
in accordance with the wiring diagram. Use
shielded cables - connect the shield on both
ends.
Do not connect any external voltage to the ter-
minals!
Sensor (sensors)
Connect the sensor to the terminals in accordance
with the wiring diagram.
Use a shielded cable, place the shield on one side
in the switch cabinet.
Do not connect any external voltage to the ter-
minals!
Analogue input for remote setpoint adjustment
Remote adjustment of the setpoint is possible
using an analogue signal (4...20 mA) by means of
the corresponding terminals in accordance with
the wiring diagram.
Use a shielded cable, place the shield on one side
in the switch cabinet.
Setpoint changeover
Using the corresponding terminals in accordance
with the wiring diagram, it is possible force a
changeover from setpoint 1 to setpoint 2 by
means of a potential-free contact (normally open
contact).
Do not connect any external voltage to the ter-
minals!
External activation/deactivation
Using the corresponding terminals in accordance
with the wiring diagram, it is possible to connect
a remote activation/deactivation by means of a
potential-free contact (normally closed contact)
after removing the jumper (factory-fitted).
External activation/deactivation
Contact closed:
Contact open:
Do not connect any external voltage to the ter-
minals!
Installation and operating instructions Wilo-Control SC-Booster (SC, SC-FC, SCe)
Automatic ON
Automatic OFF,
Signal by symbol on the
display
Protection against low water level
Using the corresponding terminals (in accordance
with the wiring diagram), it is possible to connect
a function for protection against low water level
by means of a potential-free contact (normally
closed contact) after removing the jumper (fac-
tory-fitted).
Protection against low water level
Contact closed:
Contact open:
Do not connect any external voltage to the ter-
minals!
Collective run/collective fault signals (SBM/SSM)
Potential-free contacts (changeover contacts) for
external signals are available via the correspond-
ing terminals in accordance with the wiring dia-
gram.
Potential-free contacts, max. contact load
250 V~ / 1 A
Warning! Danger of electric shock!
There is a potentially fatal voltage on these ter-
minals, even when the main switch is turned off.
Actual pressure display
A 0...10 V signal for an external measurement/dis-
play option of the current actual control variable is
available via the corresponding terminals in
accordance with the wiring diagram. 0...10 V cor-
responds to the pressure sensor signal 0...pressure
sensor limit value. E.g.
Sensor Display pressure
range
16 bar 0 ... 16 bar
Do not connect any external voltage to the ter-
minals!
English
no low water
Low water
Voltage/pressure
1 V = 1.6 bar
71