11--3
Powerware BPIV (10 kVA--30 kVA) Installation and Operation
164201406 Rev. C 013004
11.5
Optional Industrial Relay Card
An optional
Industrial Relay Card (IRC)
uses relay contact closures to indicate the
operating status and alarm condition of the UPS system. This interface allows the
monitoring of the operational status of the UPS equipment using the customer’s
monitoring equipment. Normally Open or Normally Closed contacts as needed are
available for connection to the customer’s equipment. Figure 11---2 shows an IRC.
Figure 11---2. Industrial Relay Card
The IRC can provide these signals:
•
NORMAL MODE
Indicates the UPS is energized and suppling power to the
critical load
•
BYPASS MODE
The bypass source is supplying the critical load. Usually this
means that the UPS is not energized. The load is not
protected in Bypass mode.
•
BATTERY MODE
The UPS battery backup is supplying the critical load. The
utility power is either interrupted or out of specification.
•
ALARM MODE
The UPS system is issuing an alarm that affect the current UPS
mode
Summary of Contents for BPIV
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