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Ready and Buffering Relay
Contact
Replace Battery Relay
Contact
Inhibit Input
The DC-UPS is equipped with two independent relay contacts for remote
monitoring and controlling of the unit.
Ready Contact
Contact is closed when both batteries are charged more than typical 85%, no
wiring failure is detected, input voltage is sufficient and inhibit signal is not
active.
Contact Ratings
Isolation Voltage
Buffering Contact
Contact is closed when unit is in battery mode.
Contact Ratings
Isolation Voltage
The contact is closed when one of the battery quality tests of at least one
battery reports a negative result. To reset the "replace battery" signal, cycle the
input power. The battery that has failed is indicated by the green LED that is
off. The battery should be replaced as soon as possible.
Contact Ratings
Isolation Voltage
The inhibit input disables buffering. In power
supply mode, a static signal is required. In battery
mode, a pulse with a minimum length of 250 ms is
required to stop buffering.See
Input on page 36
for details.
Signal voltage
Signal current
Inhibit threshold
Isolation voltage
Rockwell Automation Publication 1606-RM008A-EN-P - November 2021
Max
60V DC 0.3 A, 30V DC 1 A, 30V AC 0.5 A
Min
1 mA at 5V DC
See Dielectric Strength
Max
60V DC 0.3 A, 30V DC 1 A, 30V AC 0.5 A
Min
1 mA at 5V DC
See Dielectric Strength
Max
60V DC 0.3 A, 30V DC 1 A, 30V AC 0.5 A
Min
1 mA at 5V DC
See Dielectric Strength
Using the Inhibit
Max
35V DC
Max
6 mA
Min
6V DC
Max
10V DC
Dielectric Strength on page 26
DC-UPS - 24V, 20 A, 480 W Reference Manual
resistive load
Min permissible load
resistive load
Min permissible load
resistive load
Min permissible load
7 +
3 mA
Inhibit
5.1V
8 -
current limited
buffering is disabled
above the threshold level
17
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