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UPS for 400 Vac Grid, Installation Guide, doc. rel. 3.0
4.1.
Input and Output Dry Contacts
The UPS has input and output dry contacts.
The input dry contacts enable the UPS
’s computer to monitor the state (open or closed) of a relay
external to the UPS, and to generate an alarm if the state of the external relay changes.
The output dry contacts enable the UPS to trigger an external circuit in response to a system
alarm.
The connections for the input and output dry contacts are located on the front of the UPS,
connector groups 1 and 2 (see Figure 46).
The dry contacts can be set up and configured at any time. Refer to The
UPS User Guide
for
detailed instructions on configuration of the dry contacts.
Figure 49: Four pin connectors