10 Rockwell Automation Publication 1606-RM003A-EN-P - March 2019
DC-UPS with Integrated Battery - 24V, 10 A
Battery
The required 12V VRLA battery is included with this unit.
Attribute Description
Battery voltage Nom 12V DC Maintenance-free 12V VRLA lead acid battery
Battery voltage range
Max
Typ
9.0…15V
35V DC
7.4V
Continuously allowed, except deep discharge protection.
Absolute maximum voltage with no damage to the unit.
Battery charging is possible above this level.
Allowed battery capacity Nom 5 Ah High-current version
Battery charging method CC-CV Constant current, constant voltage mode
Battery charging current Nom
Max
1.5 A
1.7 A
CC-mode, independent from battery size
Corresponding 24V input current. See Figure 13.
End-of-charge voltage (CV-mode) Typ 13.1…14V Automatic setting according to ambient temperature
Battery charging time Typ 3 h
(3)
–
Battery discharging current
(1)
Typ
Typ
Max
Typ
21 A
0.3 A
50
270 mA
Buffer mode, 10 A output current, 11.5V on the battery
terminal of the unit.
Buffer mode, 0 A output current
At no input, buffering had turned off, all LEDs are off.
At no input, buffering had turned off, yellow LED shows
that buffer time has expired, (max. 15 minutes).
Deep discharge protection
(2)
Typ
Typ
10.5V
9V
At 0 A output current
At 10 A output current
(1) The current between the battery and the DC-UPS is more than twice the output current. This is caused by boosting the 12V battery voltage to a
24V level.
(2) To ensure longest battery lifetime, the DC-UPS has a battery deep discharge protection feature included. The DC-UPS stops buffering when the
voltage on the battery terminals of the DC-UPS falls below a certain value.
(3) The charging time depends on the duration and load current of the last buffer event. The numbers in the table represent a fully discharged
battery. A typical figure for a buffer current of 10 A is 2 hours, 20 minutes for a 5 Ah high-current battery. Above 40 °C(104 °F) charging time can
be longer.
Figure 12 - Battery Discharging Current versus Output Current, Typ. Figure 13 - Required Input Current versus Input Voltage for
Battery Charging
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