Troubleshooting
EN
Carlo Gavazzi
RSGT Troubleshooting Guide – Rev 1.0
5
Number of flashes
7
Alarm
Over-temperature
Alarm description
The RSGT constantly measures the heatsink and thyristors
(SCRs) temperature. If the maximum internal temperature is
exceeded (for a minimum of 0.5 sec) an over-temperature alarm
is triggered. This condition can be triggered by too many starts
per hour, an over-load condition during starting and/or stopping or
a high surrounding temperature.
Alarm recovery period
Depends on the cooling period.
(If MANUAL reset mode is applied, alarm can be reset by
pressing the Test/ Reset button).
The RSGT will only recover if the internal temperature is within
safe limits.
Consecutive alarms for hard reset
5
Action to recover alarm
The alarm will self-recover (in Auto-recovery mode) - the recovery
period will depend on the cooling time required by RSGT. The
higher the surrounding temperature, the longer the cooling period.
Troubleshooting
Check that the specified number of starts/hr is not
exceeded.
Check that the surrounding temperature around the soft
starter is within limits.
Number of flashes
8
Alarm
Overload
Alarm description
The overload alarm can be triggered in case of the following
conditions:
Measured current > 1.05 x FLC during transition from ramp-up to
bypass.
Load current > FLC. Trip time will vary according to Trip Class 10.
Alarm recovery period
Depends on the cooling period.
(If manual reset mode is applied, alarm can be reset by pressing
the Test/ Reset button).
The RSGT will only recover if the internal temperature is within
safe limits.
Consecutive alarms for hard reset
4
Action to recover alarm
The alarm will recover automatically after 5 minutes. If manual
reset mode is enabled, press Test/Reset button.
Note: allow enough time for the motor to cool before attempting
the next start.
Troubleshooting
Make sure that the FLC setting is according to the
current on the motor name plate.
Check for any blockages in the load.
If overload alarm occurs during ramp-up try to set a
shorter ramp-up time or increase the FLC setting.
