Reference Manual
All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
8 Rockwell Automation Publication 1606-RM005A-EN-P - February 2014
Bulletin 1606 Switched Mode Power Supplies
7. Hold-up Time
3AC 400V
*)
3AC 480V
*)
Hold-up Time typ. 50ms 50ms at 24V, 20A, see Fig. 7-1
min. 40ms 40ms at 24V, 20A, see Fig. 7-1
typ. 25ms 25ms at 24V, 40A, see Fig. 7-1
min. 20ms 20ms at 24V, 40A, see Fig. 7-1
*) Curves and gures for operation on only 2 legs of a 3-phase system can be found in section 25-4.
Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, denitions
0
10
20
30
40
50ms
320 360 400 440 3x480Vac
Input Voltage
Hold-up Time
24V, 20A, typ.
2
4
V
,
4
0
A
,
t
y
p
.
24V, 20A, min.
2
4
V
,
4
0
A
,
m
i
n
.
- 5%
Hold-up Time
Output
Voltage
Input
Voltage
L1 L2 L3