Troubleshooting
EN
Carlo Gavazzi
RSGT Troubleshooting Guide – Rev 1.0
6
Number of flashes
9
Alarm
Supply voltage unbalance
Alarm description
The RSGT measures the voltages on all the three phases and if
there is a difference of more than 20% for ≥ 5sec between any of
the phases, the RSGT will trigger the voltage unbalance alarm.
Alarm recovery period
5 minutes
Consecutive alarms for hard reset
5
Action to recover alarm
The alarm will recover automatically after 5 minutes. If manual
reset mode is enabled, press Test/Reset button.
Troubleshooting
Check supply voltage level across L1, L2, L3 terminals.
Check connections on the L1, L2, L3 terminals.
Number of flashes
10
Alarm
Shorted thyristor (SCR)
Alarm description
In case the RSGT detects that there is a damaged (shorted)
thyristor (SCR) on any of the three phases, the soft starter will trip.
Alarm recovery period
-
Consecutive alarms for hard reset
1
Action to recover alarm
Note: this alarm is not resettable and it is suggested to replace the
unit and contact a Carlo Gavazzi representative should this alarm
occur.
Troubleshooting
Check resistance across L1-T1, L2-T2 and L3-T3 to
check for any short.
If any of the SCRs is damaged, replace the soft starter.
Number of flashes
Fully ON
Alarm
Internal fault
Alarm description
In case there is an internal fault in the RSGT circuitry, the Red
LED will remain continuously ON.
Alarm recovery period
-
Consecutive alarms for hard reset
1
Action to recover alarm
Note: this alarm is not resettable and it is suggested to replace the
unit and contact a Carlo Gavazzi representative should this alarm
occur.
Troubleshooting
Turn ON and OFF the device. If alarm still persists
replace the soft starter.
