10
Rockwell Automation Publication 1606-RM100A-EN-P - July 2020
Power Supply - 24V, 5 A, 120 W, Single-phase Input Reference Manual
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
.
DC OK Relay Contact
This feature monitors the output voltage on the output terminals of a running
power supply.
Figure 13 - DC OK Relay Contact Behavior
Figure 10 - Short-circuit on Output, Hiccup
PLUS
Mode, Typ
Output
Current
0
9A
9s
9s
9s
1s
1s
1s
t
Short-circuit
Normal
Operation
Normal
Operation
AC 100V
AC 120V
AC 230V
Hold-up Time
Typ
70 ms
70 ms
70 ms
At 24V, 2.5 A, see
Min
55 ms
55 ms
55 ms
At 24V, 2.5 A, see
Typ
35 ms
35 ms
35 ms
Min
27 ms
27 ms
27 ms
Figure 11 - Hold-up Time Versus Input Voltage
Figure 12 - Shutdown Behavior, Definitions
0
15
30
45
60
90 ms
90
120
155
190
230V AC
Input Voltage
75
Hold-up Time
a
b
c
d
c) 24V 5 A typ.
d) 24V 5 A min.
a) 24V 2.5 A typ.
b) 24V 2.5 A min.
- 5%
Hold-up Time
Zero Transition
Output
Voltage
Input
Voltage
Contact closes
As soon as the output voltage reaches Typ 90% of the adjusted output voltage level.
Contact opens
As soon as the output voltage dips more than 10% below the adjusted output voltage.
Short dips will be extended to a signal length of 100 ms. Dips shorter than 1 ms will be
ignored.
Switching hysteresis Typically 0.7V
Contact ratings
Maximal 60V DC 0.3 A, 30V DC 1 A, 30V AC 0.5 A, resistive load
Minimal permissible load: 1 mA at 5V DC
Isolation voltage
Dielectric Strength on page 17
0.9* VADJ
<
10%
open
VOUT = VADJ
open
closed
closed
>
1...4ms
1ms
100ms