Moeller PS 416-BGT-4 Series, Hardware And Engineering, Page: 56 / 150

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02/98 AWB 27-1208-GB
PS 416-POW-4x0
4 Operation
Function of the card The power supply card generates the 5 V DC
stabilised system voltage once the mains supply is
switched on. The regulated voltage is potentially
isolated from the mains supply. The card operates as
a switched mode power supply unit in compliance
with protection class 1. The output current is 1.5 to
8 A (PS 416-POW-400/420) and 1.5 to 10 A
(PS 416-POW-410). The voltage output of the card is
short-circuit and idle-proof.
During operation the card monitors the connected
mains supply. The card generates a warning signal
(PFI = Power Fail Indication) for the central unit in the
event of a mains supply failure that lasts more than
13 ms. This signal initiates a data backup in the
retentive memory of the central unit.
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