Reference Manual Owner manual

All parameters are specified at an input voltage of 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.
Rockwell Automation Publication 1606-RM017A-EN-P — February 2014 11
Bulletin 1606 Switched Mode Power Supplies
10. Eciency and Power Losses
Eciency typ. 97.5% Normal mode, 24V 10A, 12V 0A, battery fully charged
typ. 96% Normal mode, 24V 7.0A, 12V 5A, battery fully charged
Power losses typ. 3.4W Normal mode, no load, battery fully charged
typ. 6W Normal mode, 24V 10A , 12V 0A, battery fully charged
typ. 10W Normal mode, 24V 12.3A, 12V 5A, battery fully charged
typ. 5.5W During battery charging, no load.
typ. 19W Buer mode, 24V 10A, 12V 0A
typ. 23W Buer mode, 24V 7.0A, 12V 5A
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
&
*
Electronic
Current
Limiter
Buffered
Load
+
-
24V Output
Step-up
Converter
Step-down
Converter
+
-
(5) (6)
Ready
Contact
(1) (2)
Buffering
Contact
(3) (4)
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
(7)
(8)
12V Output
Buffered
Load
*) Return current protection: this feature uses a Mosfet instead of a diode in order to minimize the voltage drop and power
losses.