5 • Circuit Descriptions
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Art.-Nr.: 80116-271
04.06
Description of the various assemblies
Line input
The VIO system can be operated with a line voltage of either 220 –
240 V or 100 – 120 V. For this the corresponding value (230 V for a
line voltage of 220 – 240 V or 115 V for 100 – 120 V) must be visible
in the inspection window on the power connection, and fuses corre
-
sponding to the value given on the rating plate must be used.
Low voltage power supply unit (l.v. supply)
The low voltage power supply unit produces the operating voltages
+5 V, +15 V, –15 V and +24 V. A special socket on the underside of
the unit is used to supply the +24 V voltage to other system compo
-
nents (e.g. APC 2).
The input voltage range for this power supply unit is 90...264 V with
50 or 60 Hz. Switching over the line voltage at the power connection
has no effect on this power supply unit.
Pin assignment
Fig. 5-3
CAUTION! An incorrect setting or unsuitable fuses may damage the unit.
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