CARLO GAVAZZI RSGT Guía De Resolución De Problemas página 4

Troubleshooting
Number of flashes
Alarm
Alarm description
Alarm recovery period
Consecutive alarms for hard reset
Action to recover alarm
Troubleshooting
Number of flashes
Alarm
Alarm description
Alarm recovery period
Consecutive alarms for hard reset
Action to recover alarm
Troubleshooting
Number of flashes
Alarm
Alarm description
Alarm recovery period
Consecutive alarms for hard reset
Action to recover alarm
Troubleshooting
Carlo Gavazzi
4
Phase loss (motor side)
If any of the phases on the load (motor) side becomes open the
RSGT will trip after 5 seconds to protect the motor from running/
starting on 2 phases.
Note: this alarm will also be triggered when a current unbalance of
> 20% is detected on any of the three line currents for a minimum
of 5 secs. Additionally if a SCR and/or bypass relay is open
(damaged) the same alarm will be triggered.
5 minutes
(If manual reset mode is applied, alarm can be reset by pressing
the Test/ Reset button).
5
Check connections on the output side of the soft starter and on
the motor terminals. The alarm will self-recover (in Auto-recovery
mode) after 5 minutes.

Check for any loose connections on the T1, T2, T3 side
of the soft starter.

Check for any loose connections on the motor terminals.

Check motor windings.
5
Locked rotor
If a current ≥ 5xFLC setting for 100 msec is detected, the RSGT
will issue the locked rotor alarm.
5 minutes
(If manual reset mode is applied, alarm can be reset by pressing
the Test/ Reset button).
5
The alarm will self-recover (in Auto-recovery mode) after 5
minutes.

Check that FLC setting is not smaller than motor name
plate current.

Check that the RSGT model is suitably rated for the
motor.

Check motor windings resistance to check if motor is
damaged.
6
Dry-run
If less than 50% of FLC current flows for 5 seconds, dry-run alarm
will be triggered.
5 minutes
(If manual reset mode is applied, alarm can be reset by pressing
the Test/ Reset button).
5
The alarm will self-recover (in Auto-recovery mode) after 5
minutes.

Check that the FLC setting is not too much higher than
the motor name plate current.

Check motor load.
RSGT Troubleshooting Guide – Rev 1.0
EN
4