56 WILO SE 09/2013
English
11. Faults, causes and remedies
Faults should only be remedied by qualified person-
nel!
Observe the safety instructions, see <chapter 10>
Maintenance.
Relays
The converter is fitted with 2 output relays aimed for
an interface to centralized control.
ex.: control box, pumps control.
SBM relay:
This relay can be configured in the « Service »
menu < 5.7.6.0 > in 3 operating states.
State: 1
« Available transfer » relay (normal
operating for this pump type).
The relay is activated when the pump
runs or is in a position to run.
When a first defect appears or by
mains supply cutoff (the pump
stops), the relay is deactiveted.
Information is given to the control
box, regarding the availability of the
pump, even temporarily.
State: 2
« Run transfer » relay.
The relay is activated when the pump
runs.
State: 3
« Power on transfer » relay.
The relay is activated when the pump
is connected to the network.
SSM relay:
« Failures transfer » relay.
After a series of detection (from 1 to 6 according to
significance) of the same type of defect, the pump
stops and this relay is activated (up to manual action).
Example: 6 defects with a variable time limit on 24
sliding hours.
State of SBM relay is « Available transfer ».
24H00 sliding
Defects
Active
relay
SBM
Rest
relay
Active
relay
SSM
Rest
relay
123 45
6
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