English
84
WILO SE 02/2014
CAUTION! Risk of property damage!
Risk of damage due to incorrect connection.
• Do not connect any external voltage to the terminals!
Collective run/collective fault signals
(SBM/SSM)
Potential-free contacts (changeover contacts) for external signals are
available via the corresponding terminals in accordance with the wir-
ing diagram.
Potential-free contacts, max. contact load 250 V~/1 A
DANGER! Risk of fatal injury!
There can be a potentially fatal voltage on these terminals, even
when the main switch is switched off.
• Observe general safety instructions!
Display of control variable actual
value
Using the corresponding terminals in accordance with the wiring dia-
gram, a 0...10 V signal for an external measurement/display option of
the current control variable actual value is available. 0...10 V corre-
sponds to the sensor signal 0 ... sensor limit value. For example:
CAUTION! Risk of property damage!
Risk of damage due to incorrect connection.
• Do not connect any external voltage to the terminals!
Field bus connection
Optionally, a connection to a field bus (ModBus RTU, BACnet MSTP,
LON) can be established using the corresponding terminals in accord-
ance with the wiring diagram (shielded cables are to be used).
CAUTION! Risk of property damage!
Risk of damage due to incorrect connection.
• Do not connect any external voltage to the terminals!
8
Commissioning
DANGER! Risk of fatal injury!
Improper commissioning poses a risk of fatal injury.
• Have commissioning performed by qualified personnel only.
DANGER! Risk of fatal injury!
When working on the open switchgear, there’s a danger of electric
shock from touching the live components.
• The work must be carried out only by qualified personnel!
It is recommended that you have the switchgear commissioned by
Wilo customer service.
• It must be checked that all on-site wiring has been performed cor-
rectly, in particular the earthing, before switching the switchgear on
for the first time.
NOTE:
Tighten all connection terminals before the commissioning!
8.1
Factory setting
The control system is preset in the factory.
The factory settings can be restored by Wilo customer service.
8.2
Checking the motor direction of
rotation
• By briefly switching on each pump in the “manual mode” operating
mode (menu 3.2.1.1, 3.2.2.1, 3.2.3.1 and 3.2.4.1), check whether the
direction of rotation of the pump in mains operation corresponds to
the arrow on the pump housing.
• If the direction of rotation of all pumps in mains operation is wrong,
swap over any 2 phases of the main mains cable.
Sensor
Display range
Voltage/differential
pressure
DDG 40
0 ... 40 m (water column) 1 V = 4 m
Summary of Contents for SC-HVAC SC
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