Installation and Operation Manual

G9000 Installation and Operation Manual 27
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. ](orange)
Illuminates when power is supplied from batteries following a power failure.
3) Load on bypass [ LOAD ON BYPASS ](orange)
Illuminates when power is supplied to load devices by static bypass.
(Indicates the state of bypass transfer switch "52S".)
4) Overload [ OVERLOAD ](orange)
Illuminates in overload condition.
5) LCD fault [ LCD FAULT ](red)
Illuminates when LCD is not responding.
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 either locally or
remotely.