Power supply (PSU/UPS)
Overview of modules
A31003-K16-X001-3-7620
,
07/99
3-34
Hicom 100 E Version 2.1, Service manual
3.8 Power supply (PSU/UPS)
The power supply units (PSU) are externally mounted; different output ratings are available for
Hicom 108/112 and Hicom 118. An uninterruptible power supply (UPS) can be used as an al-
ternative for Hicom 112 and Hicom 118. The power supply cables are fitted with rubber con-
nectors. Connecting cables with plug connectors are used for the connection to the mother-
board.
The following are used:
PSU/UPS 1 Hicom 108 (see Table 5-1)
PSU/UPS 1 Hicom 112 (see Table 5-1)
PSU/UPS2 Hicom 118 (see Table 5-2)
Type Derived voltages Overall rating
PSU/UPS1
5V DC supply for electronics
-48V DC supply for analogue and digital extensions
75Veff, 25 Hz ringing voltage (50 Hz FRA)
35 W
PSU/UPS2
5V DC supply for electronics
-48V DC supply for analogue and digital extensions
75Veff, 25 Hz ringing voltage (50 Hz FRA)
90 W
Table 3-26 Power supply (PSU/UPS) – derived voltages
Battery voltage/capacity Bridging time *
Hicom 108/112 Hicom 118
2x12V / 1, 2Ah 20 min 6 min
2x12V / 4Ah 100 min 35 min
2x12V / 7Ah 200 min 70 min
2x12V / 10Ah 300 min 130 min
* The bridging times specified correspond to a system load of 60% and an ambient
temperature of +25
0
C
Table 3-27 Bridging times for different battery capacities
Caution
Before commencing work on the system or installing expansions, always pull the
power plug, disconnect (screw connections) and pull the PSU or UPS, as otherwise
the modules may be damaged.
!
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