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Summary Alarm Contacts
Two summary alarm contacts are provided as a standard feature on the UPS. The
alarm contacts (one notice and one alarm) are located inside the UPS on the
customer interface panel (see Figure 36).
You can specify that each contact be either normally closed (NC) or normally open
(NO). If the state of the contact changes from the state you specify as normal, an alarm
is issued. You can connect these contacts 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 alarm horn may not be
heard immediately.
CAUTION:
Contacts should not be operated in excess of 30 VAC or 42.4V peak AC or DC
@ 1A maximum.
72
ALARM NO
ALARM NC
COMMON
NOTICE NO
NOTICE NC
COMMON
Figure 36. Summary Alarm Contacts
Powerware BPIII Harsh Environment UPS 50--75 kV Installation and Operation
TB2
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164291261 Rev. F 111503
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