Device description
Standard device
Power supply unit
2
46
LDCDS-CPC9100 DE/EN 1.0
2.3.2 Power supply unit
Note!
For information on the power supply unit please see the separate
documentation for the power supply unit on the manual CD.
Thetypeofthepowersupplyunitusedisspecifiedinthedevicepasscardfor
your IPC.
When the IPC is provided with a UPS power supply unit, there is a battery pack inside the
device housing. In case of mains failure, the IPC is supplied a few minutes by the battery
pack until all data are saved and the operating system has been shut down properly.
Stop!
Damage of the rechargeable batteries of the battery pack
ƒ If no mains voltage is applied, the rechargeable batteries of the battery pack
are discharged via the IPC power supply unit - even if the IPC is switched off.
This may cause an exhaustive discharge of the rechargeable batteries of the
battery pack.
ƒ The UPS is dimensioned to shut down the IPC in case of a mains failure, not
during normal operation.
Possible consequences:
ƒ The rechargeable batteries are damaged. In the case of a mains failure the
data integrity is not ensured.
Protective measures:
ƒ If the IPC is to be disconnected from the mains for a longer time, disconnect
the supply cable of the battery pack ( 55). This applies in particular to the
transport or storage of the IPC.
ƒ Do not switch off the IPC during normal operation by turning off the mains
voltage which would cause the UPS to shut down the IPC, but as prescribed
it must be always shut down using the mains switch or t he PLC.
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