Dry Contact Connection - CyberPower MBS100D5B Installation Manual

8-3. Dry Contact Connection

Dry contact descriptions
MBS
1, 2
3, 4
After maintenance, please follow the below procedure to restart the inverter as below:
1 . Ensure MBS dry contact
2 . Turn on input/output breaker
3 . Ensure UPS is on the bypass mode (UPS has normal output)
4 . Turn off maintenance breaker
5 . Restore maintenance cover, wait for UPS to restart the inverter
SM UPS
Dry Contact Port
8. INSTALLATION PROCEDURE
UPS
(J8-2, J8-3)
(J9-2, J9-3)
Backfeed Protection
(J10-2, J10-3)
(Optional)
(J7-1, J-2) Maintenance Bypass
3 / 4 connect to UPS J7-1/J7-2.
J 8 -2
J 8 -3
J 7 - 1
J 7 - 2
J8-2 and J8-3 for Backfeed Protection signal
J7-1 and J7-2 for Maintenance Bypass signal
Signal
When UPS is in the battery
mode, and detects "Bypass
Module Fail-Set" UPS sends a
short signal to the B1 Breaker
that trip to ensure the UPS
input does not exist hazardous
voltages.
Remove the maintenance
cover, MBS sends a short signal
to the UPS, UPS transfers to
the Bypass mode.
1
2
3
4
16
Function