Datasheet

PRELIMINARY
UB20.241
U–Series
24V, 20A, DC-UPS
10. EFFICIENCY AND POWER LOSSES
Efficiency typ. 99%. Normal mode, 20A output current, battery fully charged
Power losses typ. 3.7W Normal mode, 20A output current, battery fully charged
typ. 7,8W Buffer mode, 10A output current
typ. 22,7W Buffer mode, 20A output current
11. FUNCTIONAL DIAGRAM
Fig. 11-1 Functional diagram
-
+
24V
Power
Supply
Buck/Boost
Converter
Battery
Charger
1
Battery
Diagnosis
1
+
-
24V
Battery
+
-
Input
Batt
+-
BAT2
12V
+-
BAT1
12V
CT
Battery
Charger
2
Current
Limiter
Battery
Diagnosis
2
(13)
-
Current
Measure-
ment
+
-
Buffered
Load
Output
Diagnosis LED (yellow)
Status LED Batt 2 (green)
Inhibit +
Controller
Error LED (red)
Replace Battery
Buffering
Contact
Ready Contact
Buffer Time Limiter
10s, 30s, 1m, 3m, 10m,
(7)
Inhibit -
(8)
(1)
(2)
(3)
(4)
(5)
(6)
Status LED Batt 1 (green)
Buffer Voltage
22.5V, 24V, 25V, 26V
Data/ Temp. Sensor (11)
RTN (12)
Center Tap
Return
Current
Protection
Battery Size Selector
<10Ah / > 10Ah
September 2012 / Rev. 1.3 DS-UB20.241-EN preliminary
All parameters are specified at an input voltage of 24V, 20A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
www.pulspower.com Phone [phone] Germany
7/23