Reference Manual User 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-RM013A-EN-P — March 2014 9
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. 7.2W 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.
Ef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
Power losses versus output current
0
07.5
6
12
15A
3
9
15
18W
O
u
t
p
u
t
C
u
r
r
e
n
t
2.5 5 10 12.5
A
B
A: Buffer Mode
B: Charging Mode
C: Normal Mode
C
11. Functional Diagram
Fig. 11-1 Functional diagram
-
+
-
+
DC- UPS
24V
Power
Supply
Step-up
Converter
Battery
Charger
Electronic
Current
Limiter
Battery
Tester
+
-
12V Battery
+
-
Buffered
Load
Cut-off
Relay
Input Output
Battery
Diagnosis LED (yellow)
Status LED (green)
Inhibit +
Controller
Check Wiring LED (red)
Replace Battery
Buffering
Contact
Ready Contact
Battery Temperature
(7)
Inhibit -
(8)
(1)
(2)
(3)
(4)
(5)
(6)
Input Fuse
&
Reverse
Polarity
Protection
*
Temp.
*) Return current protection: this feature uses a Mosfet instead of a diode to minimize the voltage drop and power losses.