Description
2.8 Communication and system connection
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
157
Slide switch for module role selector switch
The slide switch module role selector switch (A or B) is used to assign a role A or B to
the respective communications module. The switch also serves to uniquely identify the
communications module in the system.
Changing the role during operation triggers an immediate restart of the communications
module. The communications module is not accessible during the restart. The role
change is effective after the restart.
The role assignment between two communications modules must be unique. Two
modules must not have the same role, as this will cause an error. The communications
modules will then not be ready for operation.
Note
Special functions of role A
Role A has special functions and must therefore always be present. The following
elements must only ever be connected to a communications module with role A:
Position signaling switch module (PSS COM)
Remote Switching Protection (RSP)
See also
Parameter write protection (Page 164)
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