System information

GRAVITAS SABRE SERIES
INSTALLATION &OPERATING MANUAL
Manual No. SABRE-4 Page 31 11/27/07 sabre-man
STS Module LED Display
Priority Green LED LED Signal Status
Solid
STS operating normally
Flash 1
Running mode not according to the
setting priority. For example, STS
operating in off-line mode, but the
priority is set to on-line.
Flash 3
STS operating in inverter bypass mode
Priority Yellow LED LED Signal Status
Solid
Mains or Inverter abnormal
Flash 3
If the status of the green LED is the
same as the yellow LED, then the STS
is in Inverter bypass mode, otherwise
the Back-feed relay open
Low
High
Flash 6
STS Output abnormal
Priority Red LED LED Signal Status
Flash 1
Fan lock or Can communication fail or
EEPROM fault
Flash 3
SCR short or auxiliary power supply
fault
Flash 6
MBS position abnormal
Low
High
Solid
STS Fault mode, maybe overload or
over temperature or output short
Note: If more than one warning exists at the same time, then the LEDs will display the highest priority condition.