OPTI-UPS MD120L - Manual (Page 92)

Chapter 4 Operator Control and Display Panel 35
35
4.1.1 LED Indicator
The LEDs shown on the mini current path represent the various UPS power paths and show the
current UPS operating status. The status description of indicators is shown in table 4-2.
Table 4-2 Status description of indicator
Indicator State Purpose
Rectifier
indicator
Steady green Rectifier normal for all modules
Flashing green Rectifier for at least on module normal, mains normal
Steady red Rectifier fault
Flashing red Mains abnormal for at least one module
Off Rectifier not operating
Battery
indicator
Steady green Battery charging
Flashing green Battery discharging
Steady red
Battery abnormal (battery failure, no battery or battery reverse) or
battery converter abnormal (failure, over current or over temperature) ,
EOD
Flashing red Battery low voltage
Off Battery and battery converter normal, battery not charging
Bypass
indicator
Steady green Load power supplied by bypass
Steady red
Bypass power abnormal or out of normal range, or static bypass
switch fault
Flashing red Bypass voltage abnormal
Off Bypass normal
Inverter
indicator
Steady green Load power supplied by inverter
Flashing green
Inverter On, start, synchronization of standby (ECO mode) for at least
one module
Steady red
System power not supplied by inverter, inverter fault for at least one
module.
Flashing red
System power supplied by inverter, inverter fault for at least one
module.
Off Inverter not operating for all modules
Load
indicator
Steady green UPS output ON and normal
Steady red
UPS output overload and overtime, or output short, or output no power
supply
Flashing red Overload output of UPS
Off No output of UPS
Status
indicator
Steady green Normal operation
Steady red Failure
4.1.2 Audible Alarm (buzzer)
There are two different types of audible alarm during UPS operation as shown in table 4-3.
Table 4-3 description of audible alarm
Alarm Purpose
Two short alarm with
a long one
when system has general alarm (for example: AC fault), this audible alarm
can be heard
Continuous alarm
When system has serious faults (for example: fuse or hardware fault), this
audible alarm can be heard