Wilo Stratos MAXO Notice De Montage Et De Mise En Service page 100

en-US
SBM/EBM (collective run signal/individual run signal) in twin-head pump operation
• SBM: The SBM contact can be assigned to any of the two pumps. Both contacts signal the operating status
of the twin-head pump in parallel (collective run signal).
• EBM: The SBM function of the twin-head 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.
11.3 SSM/SBM relay forced control
An SSM/SBM relay forced control is used as function test of the SSM/SBM relay and electrical 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
The "Forced active" setting permanently activates the relay. A warning/operating note (light) is permanently
displayed/indicated.
The "Forced inactive" setting leaves the relay permanently without a signal. No warning/operating note can
be confirmed.
11.4 Application and function of the digital control inputs DI1 and DI2
The pump can be controlled through external potential-free contacts at the digital inputs 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.
See section "Adjustment - Manual operation [" 88]" for a detailed description of the OFF, MAX, MIN, and
MANUAL functions
In the "Settings" menu
1. "External interfaces"
100
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 in-
fluences the SBM relay switching status.
SSM/SBM relay switching status is forced ACTIVE.
CAUTION:
SSM/SBM does not display the pump status!
SSM/SBM relay switching status is forced INACTIVE.
CAUTION:
SSM/SBM does not display the pump status!
, select
Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.02/2023-10
, select