Reference Manual Manual
All parameters are specified at 24V, 2.5A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM031A-EN-P — April 2014 7
Bulletin 1606 Switched Mode Power Supplies
7. Hold-up Time
3AC 400V 3AC 480V
Hold-up Time typ. 34ms 54ms at 48V, 5A, see Fig. 7-1
typ. 68ms 108ms at 48V, 2.5A, see Fig. 7-1
Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, denitions
0
20
40
60
100ms
320 360 400 440 3x480Vac
Input Voltage
Hold-up Time at 48Vdc
2
.
5
A
,
t
y
p
.
5
A
,
t
y
p
.
5
A
,
m
i
n
.
2
.
5
A
,
m
i
n
.
80
- 5%
Hold-up
Time
Output
Voltage
Input
Voltage
L1 L2 L3