Commissioning
Power failure during the boot process
The UPS service is not yet active at this time. The UPS automatically switches to battery operation, thus
bridging the power failure. The PC is booted up in battery mode. During a prolonged power failure the UPS
service takes over control after the start and starts shutting down the system.
Restoration of supply and repeated power failures during UPS shutdown
The following diagram shows a case in which the UPS service initiates a shutdown and the supply is
restored during the shutdown.
Once the UPS service has initiated the shutdown this process cannot be stopped and must be completed.
Repeated power failures during the shutdown are bridged by the UPS. In order to enable the IPC to restart
the external power supply is interrupted briefly (a few seconds).
CX2100-09x4 61Version: 1.3
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