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Idiomas disponibles
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
Frequency out of range
If the frequency measured by the RSBT is > 66.5 Hz and < 44.5
Hz for at least 1 second, this alarm will trigger.
5 minutes
N/A
Check for any disturbance on the voltage network. The voltage
waveform may be disrupted when unfiltered variable frequency
drives are used.
•
In the case where variable frequency drives are present,
ensure that proper EMI filters are installed
5
Locked rotor condition (during ramp)
If a current ≥ 4 x Ie for 100 msec is detected, the RSBT will issue
the locked rotor alarm.
5 minutes
2
The alarm will self-recover after 5 minutes. If the soft starter
remains in alarm for more than 5 minutes (due to consecutive
alarms) then a power reset (reset of L1, L2, L3 is required.
•
Check that the RSBT model is suitably rated for the
motor
•
Check motor windings resistance to check if motor is
damaged
6
Ramp-up time (> 1 sec)
The RSBT will trigger this alarm if the compressor does not reach
full speed within 1 second. The alarm protects the bypass relays
from switching a high current.
5 minutes
2
The alarm will self-recover after 5 minutes. If the alrm is triggered
twice consecutively, then the user must switch OFF and then ON
the mains (L1, L2, L3) to perform a hard reset. This will reset the
alarm.
•
Check that the correct model of RSBT is being used
•
Chec that the connections to the compressor are correct
•
Check for any mechanical blockage of the compressor
RSBT Troubleshooting Guide – Rev 1.0
EN
4
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