30 HB700 | CPU | PMC921xEx | en | 24-04
16x periphery module
2.4 Mounting
WARNING
Unintentional machine start-up
− Do not mount or dismount when the power is on!
− Disconnect the CPU from the power supply before mounting or dis-
mounting and secure the power supply against being switched on again!
− Do not switch on the power supply until the system has been completely
mounted. Pay attention to the diagnostic indicators and any diagnostic
messages.
− The machine/plant may only be started when no hazard can result from
the machine/plant.
NOTICE
Electronic damage due to insufficient external fuse protection - No safe
release in the event of a fault
Insuf
ficient external fusing will cause electronic damage to the CPU.
− Fuse the supply voltage externally according to the connected load
(number of System SLIO F participants/sum of current consumption of
each participant).
− Ensure safe triggering of the external fuse.
− If you use a melting fuse, the power supply unit must be able to supply
four times the rated current of the melting fuse. This ensures safe trig-
gering in the event of an error
.
NOTICE
Damage due to improper handling
− Handle the CPU and components with care!
− When installing the CPU and components, ensure that mechanical
damage is avoided!
Note on mounting
−
Mount the CPU in a closed control cabinet or control box with degree
of protection IP54 or higher on a 35 mm standard mounting rail.
−
Use a mounting rail according to EN 60715.
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