2.5 Replacing the Module
Unified Controller nv series PROFIBUS(PA912) Module Instruction Manual
25
CAUTION
Replace the PA912 module only when
system is not energized.
The DC24V power system to the PA912 module
should be separated from the power system of
the other modules or should be the independent
configuration
so that only PA912 can be powered
off. (for example, system with the no- fuse
breaker)
Mandatory
CAUTION
When replacing only the PA912 module
during the nv controller is in operation,
specify the fallback mode to avoid the
system failure.
If the DC24V power system
is turned off, the communication of the module
will stop and it will cause a serious failure.
The controller will go down when the fallback
mode is not specified.
Mandatory
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