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MITSUBISHI ELECTRIC 9800A SERIES UPS
MITSUBISHI
ELECTRIC
9800A SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
2-2
2.1 LED Display
1) Load on inverter [ LOAD ON INVERTER ](green)
Illuminates when power is supplied from inverter to the critical load.
(Indicates the state of inverter transfer switch "52C".)
2) Battery operation [ BATTERY OP. ](yellow)
Illuminates when power is supplied from batteries following a power failure.
3) Load on bypass [ LOAD ON BYPASS ](green)
Illuminates when power is supplied to load devices by static bypass.
(Indicates the state of bypass transfer switch "52S".)
4) Overload [ OVERLOAD ](red)
Illuminates in overload condition.
5) LCD fault [ LCD FAULT ](red)
Illuminates when an error occurs.
6) UPS fault [ UPS FAULT ](red) [Annunciator: intermittent or constant tones]
Illuminates when an error occurs in the system. In this case, the details of the error are
indicated on the display panel.
2.2 EPO button (Emergency Power Off button) (7)
When activated, the Emergency Power Off (EPO) function shuts down the UPS module.
The critical load will lose power and also shutdown. The EPO function can be performed
both locally or remotely.