Faults And Trouble Shooting - Husqvarna PG 680 Operator's Manual

Faults and trouble shooting

When either one of the variable speed drives or frequen-
cy converters in the machine experience a fault and "trip"
out, they will cease to run and an error message will ap-
pear fl ashing on the keypad display (see picture below).
The following list are the most commonly experienced
faults and possible action steps.
Fault Code
1—OVERCURRENT
3—EARTH FAULT
9—UNDERVOLTAGE
11—OUTPUT PHASE
SUPERVISION
14—UNIT OVER TEM-
PERATURE
15—MOTOR STALLED
16 - MOTOR OVERTEM-
PERATURE
16
- English
Faults and trouble shooting
Possible Cause
Motor being worked too hard and
drawing extra current.
Short circuit on output side of vari-
able speed drives or frequency con-
verters.
Motor failure (very rare)
Short circuit on output side of vari-
able speed drives or frequency con-
verters.
Motor failure (very rare)
Insuffi cient voltage supply to ma-
chine.
Power supply to variable speed
drives or frequency converters has
been turned off.
Short circuit on output side of vari-
able speed drives or frequency con-
verters.
Motor failure (very rare)
Variable speed drives or frequency
converter over temperature due to
high temperature working environ-
ment or faulty temperature sensor.
Motor being worked too hard and
drawing extra current.
Mechanical jam preventing motor
from turning.
Motor being worked too hard and
drawing extra current.
Fault code
Action
Check current being drawn when machine is
running. Reduce speed setting and current draw
back into acceptable limits as described on
previous page.
Check wiring in plugs connected to motor cables
or inside connection boxes on motors.
Have motor tested and replace if required.
Check wiring in plugs connected to motor cables
or inside connection boxes on motors.
Have motor tested and replace if required.
Check power supply and ensure correct voltage.
Re-connect power to grinder.
Check wiring in plugs connected to motor cables
or inside connection boxes on motors.
Have motor tested and replace if required.
Open door on electrical cabinet to increase ven-
tilation.Have variable speed drives or frequency
converter tested by service agent.
Check current being drawn when machine is
running. Reduce speed setting and current draw
back into acceptable limits as described on
previous page.
Try rotating grinding discs and planetary head by
hand to see if jam exists
Check current being drawn when machine is
running. Reduce speed setting and current draw
back into acceptable limits as described on
previous page.