UPS 450 - 550 kVA (2x225 - 2x275 kVA)
User’s and Installation Guide
1027574
Revision B
70
7.4 Building alarm monitoring
This standard feature lets you connect the UPS to your building alarms, such as smoke
detectors or overtemperature alarms. The customer interface terminals for external connections
are located inside the UPS. You should use twisted-pair wires for each alarm input and common.
The building alarms can be programmed to display the alarm functional name.
7.5 General purpose relay contact
One general purpose relay contact is provided as a standard feature on the UPS. The alarm
contact is located inside the UPS on the customer interface terminal board.
You can use a normally-closed or normally-open contact. If the state of the contact changes
from the state you specify as normal, a signal is issued. You can connect this contact to
equipment at your facility (such as a light or an alarm bell) to let you know when an alarm is
active on the UPS. This feature is useful if the UPS is located in a remote area where the UPS
horn may not be heard immediately.
CAUTION
Contacts should not be operated in excess of 30 Vac @ 5A maximum.
