4.3 Shutdown
Unified Controller nv series PROFIBUS(PA912) Module Instruction Manual
73
4.3 Shutdown
To shut down the unified controller, do the following.
1
Change the operation mode switch of the controller module to "HALT."
2
Turn off the PROFIBUS slave I/O external power supply and slave I/O
load power supply.
If the external power supply and load power supply cannot be shared,
construct the system so that they are turned off simultaneously (or in the
order of load power supply → external power supply).
3
Turn off the TC-net I/O base unit external power supply.
4
Turn off the power of the controller unit.
CAUTION
For system safety, turn off the PROFIBUS
slave I/O load power before the power of
the nv series.
If this order is not followed, it may cause an
accident or damage to the machine.
Share the external power supply for the
PROFIBUS slave I/O device with the load power
supply whenever possible. If this is not
possible, construct the system so that the
external power supply and load power supply
are turned off simultaneously.
Mandatory
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