
Rockwell Automation Publication 1606-RM056A-EN-P - December 2016
11
Basic Power Supply 10 A
Hold-Up Time
DC OK Relay Contact
This feature monitors the output voltage, which is produced by the power
supply itself. It is independent of a back-fed voltage from a unit that is
connected in parallel to the power supply output such as a redundant
application.
Figure 11 - DC-OK Relay Contact Behavior
Type
AC 100V
AC 120V
AC 230V
Notes
24V, 5 A
typ
65 ms
65 ms
65 ms
See
Figure 9
min
53 ms
53 ms
53 ms
24V, 10 A
typ
32 ms
32 ms
32 ms
min
26 ms
26 ms
26 ms
Figure 9 - Hold-up Time vs. Input Voltage
Figure 10 - Shut-down Behavior, Definitions
0
10
20
30
40
80ms
90
120
230Vac
Input Voltage
50
60
Hold-up Time
70
a
b
c
d
a) 24V 5A typ.
b) 24V 5A min.
c) 24V 10A typ.
d) 24V 10A min.
- 5%
Hold-up Time
Zero Transition
Output
Voltage
Input
Voltage
Attribute
1606-XLB240E
Contact closes
As soon as the output voltage reaches 21.8V
Contact opens
As soon as the output voltage dips below 21.7V
Contact ratings
max
60V DC, 0.3 A; 30V DC, 1 A; 30V AC, 0.5 A
resistive load
min
1 mA at 5V DC
min required load
Isolation voltage
See
Dielectric Strength on page 21
21.8V
open
Output Voltage
closed