Signalling Functions - Siemens S5-155U System Manual

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Signalling functions

System Manual
C79000-B8576-C199-03
The failure of a monitored function is signalled by the power supply
units:
• •
via LED indicators on the front plate;
• •
via relays with which signalling circuits can be switched;
• •
via signals to the S5 bus.
Power Supply Units
4 - 23
4

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