20
21
-1
1
16
Power Supply PS1000-A6-24.5
Hold-Up Time
9
Hold-Up Time
The hold-up time is the time during which a power supply’s output voltage remains
within specification following the loss of input power. The hold-up time is output load
dependent. At no load, the hold-up time can be up to several seconds. The green DC-OK lamp
is also on during this time.
Figure 9.1
Hold-up time vs. input voltage
Figure 9.2
Shut-down behavior, definitions
AC 100V
AC 120V
AC 230V
Hold-up Time
Typ.
70ms
70ms
70ms
At 24V, 2.5A, see Figure 9.1
Min.
55ms
55ms
55ms
At 24V, 2.5A, see Figure 9.1
Typ.
35ms
35ms
35ms
At 24V, 5A, see Figure 9.1
Min.
27ms
27ms
27ms
At 24V, 5A, see Figure 9.1
0
15
30
45
60
90ms
90
120
155
190
230Vac
Input Voltage
75
Hold-up Time
a
b
c
d
a) 24V 2.5A typ.
b) 24V 2.5A min.
c) 24V 5A typ.
d) 24V 5A min.
- 5%
Hold-up Time
Zero Transition
Output
Voltage
Input
Voltage
