Uninterruptible Power Supply (Ups) (As From Sw 6.3) (Express Shutdown) - Siemens SINUMERIK 840C Installation Instructions Manual

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12 Functional Descriptions

12.35 Uninterruptible power supply (UPS) (as from SW 6.3) (Express shutdown)

When the 840 C control is not purposely, i.e. properly ramped down but instead just turned off,

general problems can occur in the operating system. E.g. opened data files may not be closed

properly leading to inventory data inconsistencies. In a worst case scenario, the file system of

the hard disk could become inconsistent during a momentary write access to the hard disk.

The danger in such cases is that the MMC may not be able to boot at the next POWER ON.

With the help of a standard UPS (approx. 300 W) it is possible to switch off or ramp down

(express shutdown) the NC in a controlled manner.

Express shutdown function diagram

"Power failure"

Input X 121 5/6

"Data saved"

Configuration of the express shutdown

Configuration options as follows:

More user manuals on

Uninterruptible power supply (UPS) (as from SW 6.3)

(Express shutdown)

Connection via special I/O on the central service board (CSB)

Connection via PLC inputs/outputs

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Bit 0 - bit 7

6FC5197- AA50

SINUMERIK 840C (IA)

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