ASTAT XL Service Manual
Troubleshooting
Display
Possible cause/Suggested solution
Firing Fail Px
Where 'X' is phase 1, 2 or 3.
The SCR did not fire as expected. The SCR may be faulty or there may be an
internal wiring fault.
This trip is not adjustable.
Related parameters: None
FLC too high
The ASTAT XL can support higher motor full load current values when
connected to the motor using inside delta configuration rather than in-line
connection. If the soft starter is connected in-line but the programmed
setting for parameter 1A
Motor Full Load Current
is above the in-line maximum,
the soft starter will trip at start (see Minimum and Maximum Current Settings).
If the soft starter is connected to the motor using inside delta configuration, the
soft starter may not be correctly detecting the connection. Contact your local
supplier for advice.
Related parameters: 1A, 1C
Frequency
The mains frequency has gone beyond the specified range.
Check for other equipment in the area that could be affecting the mains
supply, particularly variable speed drives and switch mode power supplies
(SMPS).
If the ASTAT XL is connected to a generator set supply, the generator may be
too small or could have a speed regulation problem.
Related parameters: 4G, 4H, 5G, 16F
Heatsink
overtemperature
Check if cooling fans are operating. If mounted in an enclosure, check if
ventilation is adequate.
Fans operate during Start, Run and for 10 minutes after the starter exits the
Stop state.
NOTE
Models QLxxB0023D to QLxxB0053D and QLxxB0170D do not have
a cooling fan. Models with fans will operate the cooling fans from a
Start until 10 minutes after a Stop.
Related parameters: 16J
High Level
This is a name selected for a programmable input. See Input A trip.
High Pressure
This is a name selected for a programmable input. See Input A trip.
Input A trip
The soft starter's programmable input is set to a trip function and has
activated. Resolve the trigger condition.
Related parameters: 4E, 5E, 5F, 6D, 6E, 16E
Instantaneous
overcurrent
There has been a sharp rise in motor current, probably caused by a locked
rotor condition (shearpin) while running. This may indicate a jammed load.
Related parameters: 4D, 5D, 16D
Internal fault X
The ASTAT XL has tripped on an internal fault. Contact your local supplier with
the fault code (X).
Related parameters: None
L1 phase loss
L2 phase loss
L3 phase loss
During pre-start checks the starter has detected a phase loss as indicated.
In run state, the starter has detected that the current on the affected phase
has dropped below 2% of the programmed motor FLC for more than 1 second,
indicating that either the incoming phase or connection to the motor has been
lost.
Check the supply and the input and output connections at the starter and at
the motor end.
Phase loss can also be caused by a failed SCR, particularly an SCR that has
failed open circuit. A failed SCR can only be definitely diagnosed by replacing
the SCR and checking the starter's performance.
Related parameters: None
8
DET-813
