Reference Manual

All parameters are specified at 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
10 Rockwell Automation Publication 1606-RM036A-EN-P — April 2014
Bulletin 1606 Switched Mode Power Supplies
10. Eciency and Power Losses
Eciency typ. 97.8% Normal mode, 10A output current, battery fully charged
Power losses typ. 2.9W Normal mode, 0A output current, battery fully charged
typ. 5.5W Normal mode, 10A output current, battery fully charged
typ. 5.0W During battery charging, 0A output current
typ. 18.5W Buer mode, 10A output current
Fig. 10-1 Eciency at 24V, typ. Fig. 10-2 Losses at 24V, typ.
Power losses versus output
current in normal mode
0
07.5
2
3
5
15A
1
4
6
7
8W
O
u
t
p
u
t
C
u
r
r
e
n
t
2.5 5 10 12.5
Eciency vs. output
current in normal mode
94.5
39
95.5
96.0
97.0
15A
95.0
96.5
97.5
98%
O
u
t
p
u
t
C
u
r
r
e
n
t
57 1113
11. Functional Diagram
Fig. 11-1 Functional diagram
DC-UPS Control Unit
Battery
Charger
Battery
Tester
Cut-off
Relay
Battery
+
-
12V Battery
24V
Power
Supply
Input
-
+
-
+
Reverse
Polarity
Protection
Input Fuse
&
*
(5) (6)
Ready
Contact
(1) (2)
Buffering
Contact
(3) (4)
Electronic
Current
Limiter
Buffered
Load
+
-
Output
Controller
Diagnosis LED (yellow)
Check Wiring LED (red)
Status LED (green)
Buffer-time Limiter
10s, 30s, 1m, 3m, 10m,
End-of-charge Voltage
Inhibit -
Inhibit +
Replace
Battery
Contact
Step-up
Converter
(7)
(8)
*) Return current protection: this feature uses a Mosfet instead of a diode in order to minimize the voltage drop and power
losses.