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Rockwell Automation Publication 1606-RM101A-EN-P - July 2020
11
Hold-up 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
Attributes
Values
Notes
100V AC
120V AC
230V AC
Hold-up Time
Typ
73 ms
73 ms
73 ms
At 24V, 5 A, see
Min
55 ms
55 ms
55 ms
At 24V, 5 A, see
Typ
37 ms
37 ms
37 ms
At 24V, 10 A, see
Min
28 ms
28 ms
28 ms
At 24V, 10 A, see
Figure 11 - Hold-up Time vs. Input Voltage
Figure 12 - Shutdown Behavior, Definitions
0
10
20
30
40
80 ms
90
120
155
190
230V AC
Input Voltage
50
60
Hold-up Time
70
a
b
c
d
a) 24V 5 A typ
b) 24V 5 A min
c) 24V 10 A typ
d) 24V 10 A min
- 5%
Hold-up Time
Zero Transition
Output
Voltage
Input
Voltage
Attributes
Descriptions
Contact closes
As soon as the output voltage reaches 90% typ 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 are
extended to a signal length of 100 ms. Dips shorter than 1 ms are ignored.
Switching hysteresis
1V
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
See
Dielectric Strength on page 20
.
100 ms
0.9* V
ADJ
<
1 ms
10%
open
V
OUT
= V
ADJ
open
closed
closed
>
1 ms