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Chapter 11
The many standard features of your UPS system provide consistent, economical, and
dependable power protection. In addition, you can add available options to enhance the
performance of your system. This chapter provides descriptions of some of the features
and options introduced earlier in this manual. For location of the customer interface panel
and terminals and for terminal wiring information, see:
11.1 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.
Regardless of how you assign the building alarms, they display as Building Alarm 1 and
Building Alarm 2 on the control panel. You should use twisted-pair wires for each alarm
input and common.
11.2 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.
Powerware
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
®
Using Features and Options
Drawing 164201535-6 on page A-27
Drawing 164201535-8 starting on page A-33
Contacts should not be operated in excess of 120 Vac @ 5A maximum.
C A U T I O N
11-1
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