KStar YDC9300-RT - Page 31

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12） INVERTER ON KEY: Enable Inverter Operation
CAUTION!
The LEDs mounted on the mimic flow chart represent the various power paths and
current UPS operational status.
Mains indicator
Green
Rectifier in Normal Operation
Flashing Green
Input mains voltage or frequency out of normal range
Off
Input AC Not Available
Battery indicator
Gree n
Battery Normal, but discharging and powering the load
Flashing Green
Battery End of Discharge pre-warning, Battery abnormal (high
or low voltage, Absent or Polarity Reversed), charger
abnormal
Of f
Battery and Converter Normal, Battery charging.
Bypass indicator
Gree n
Load on Bypass power
Flashing Green
Bypass not available, out of normal range, Static bypass
switch short or broken fault, bypass switch wiring fault, bypass
over current
Of f
Bypass Normal, load not on bypass
Inverter indicator
Gree n
Inverter Normal and powering the load
Flashing Green
Inverter failed, Inverter IGBT bridge direct conduct
protection, Inverter Thyristor short or broken fault, over
load or Parallel Overload, Feedback protection
Of f
Inverter not operating
Output indicator
Gree n
UPS output ON and Normal
Of f
UPS output OFF.
Ffault indicator
Off
Normal Operation
Re d
UPS fault e.g.