Ssm/Sbm Relay Forced Control; Application And Function Of The Digital Control Inputs Di1 And Di2 - Wilo Stratos MAXO Notice De Montage

10.3

SSM/SBM relay forced control

10.4 Application and function of the
digital control inputs DI1 and DI2
Installation and operating instructions Wilo-Stratos MAXO/-D/-Z
Communication interfaces: Setting and function
▪ Resetting of the SBM signal after changing the operating status is delayed.
Trigger delays are used so that processes are not influenced by very short fault or warn-
ing messages.
When an operating status change is done before the expiration of set time, the change
is not reported to the SBM.
A set SBM trigger delay of 0 seconds reports a operating status change immediately.
When an operating status change occurs only for a short duration, the reset delay pre-
vents a flutter of the SBM signal.
NOTICE
SBM trigger and SBM reset delay is set to 5 seconds as a factory setting.
SBM/EBM (collective run signal/individual run signal) in double pump operation
▪ SBM: The SBM contact can be assigned to any of the two pumps. Both contacts signal
the operating status of the double pump in parallel (collective run signal).
▪ EBM: The SBM function of the double pump can be configured so that the SBM contacts
signal only operational messages of the respective pump (individual run signal). In order
to record run signals of both the pumps, both contacts must be assigned.
A SSM/SBM relay forced control is used as function test of the SSM/SBM relay and elec-
trical connections.
In the "Diagnostics and measured values" menu
1. "Diagnostics help"
2. "SSM relay forced control" or "SBM relay forced control" in sequence.
Selection options:
SSM/SBM relay
Forced control
Normal
Forced active
Forced inactive
Table 33: Selection option SSM/SBM relay forced control
With the "Forced active" setting, the relay is permanently activated so that a warning/
operational indicator (lights) are displayed/signalled continuously.
With the "Forced inactive" setting, the relay is permanently without signal so that there
is no confirmation of a warning/operational signal.
The pump can be controlled through external potential-free contacts at the digital in-
puts DI1 and DI2. The pump can be
▪ switched on or switched off,
▪ controlled to maximum or minimum speed,
▪ set manually into an operating mode,
▪ protected against changes of settings through control or remote control or
▪ switched between heating and cooling.
, select
Help text
SSM: Depending on the SSM configuration, fault
and warnings influence the SSM relay switching
status.
SBM: Depending on the SBM configuration, the
pump status influences the SBM relay switching
status.
SSM/SBM relay switching status is forced ACTIVE.
ATTENTION:
SSM/SBM does not show the pump status!
SSM/SBM relay switching status is forced INACT-
IVE.
ATTENTION:
SSM/SBM does not show the pump status!
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