14
9.8 Battery backup (UPS)
A battery can be connected to the CU 361 as backup
for the normal power supply. The battery can be
connected directly to the CU 361 without a fuse.
With the backup battery the CU 361 can continue to
operate despite interruptions in the normal power
supply.
Fig. 15 Label for backup battery
9.8.1 Battery data
The backup battery should meet the below
requirements:
9.8.2 Battery monitoring
The CU 361 can monitor the following:
• short-circuit
• wrong polarity
• defective battery
• battery missing
• low battery voltage.
9.9 Terminal groups
Fig. 16 Terminal groups
The terminals of the groups 2, 3, 5 and 6 are
insulated from all other terminal groups by reinforced
insulation, 2224 VAC.
All control terminals in groups 2, 3, 5 and 6 are
supplied with SELV voltage (Safety Extra-Low
Voltage).
TM04 2367 2408
Battery brand Power Sonic
Battery type Lead acid battery AGM type
Battery series
PS 12xxx series UL R/C under
file number MH20845
Nominal voltage 12 V
Battery capacity
40 Ah, recommended
(24 hours operating time)
Nominal charging
time
8 hours (40 Ah battery)
12V dc
Battery powered
0V
12V
96801950
TM04 2067 1908
Group 1 Connection of power supply
Group 2 Internal GENIbus connection
Group 3
Fieldbus connection
(CIM module) (not standard)
Group 4
Connection of backup battery
supply
Group 5 Digital inputs
Group 6 Analog inputs
Group 7 Digital outputs
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