Operators manual for the Pentruder 8 – 20HF IQ and Pentpak 427
Page 29
Tractive Support
LED type warning lights on the power pack
There are four red warning LED:s on the Pentpak 427. Below is an explanation of the respective
functions.
LED for loss of one or more phases
One blink:
Loss of phase on mains. Loss of one power supply phase line can
be caused by a blown fuse, faulty cords, faulty plugs or receptacles,
or other problems. If the light is on, check fuses, input voltage,
cords etc.
Two blinks:
Too low incoming voltage. Check voltage, connectors and cords.
Three blinks:
Too high incoming voltage. Check voltage. Connect to only 3-phase
380 – 480V.
With one phase missing from the power supply, feeding may work, but the blade will not rotate.
General advice to eliminate any of the above fault conditions: Eliminate the cause of the problem,
i.e. replace blown fuses, repair cords, repair or replace plugs and receptacles.
Note: To allow capacitors in the inverter to discharge, at least one minute must elapse after the
emergency stop button is pressed and the green start button is pressed.
LED indicating status for the power pack
One blink:
Overcurrent alarm. May occur if the blade is jammed in the cut,
Press start blade switch to reset or unplug the unit for 60 seconds.
Two blinks:
Temperature in the frequency inverter has risen to a too high level.
Protect from direct sunlight, increase water flow.
Three blinks:
Other alarm for frequency inverter. Unplug the unit from the power
supply, wait at least one minute and plug it in again. If the alarm has
gone away you can proceed as normal.
If the alarm doesn’t go away, the unit must be checked by a
technician trained on this equipment.
Four blinks:
Frequency inverter alarm. Must be checked by a technician trained
on this equipment.
LED for
indication of
loss of one or
more phases
Emergency stop
button
LED indicating status for
the power pack
Start button
°C
