AVL Industrial Dobby Loom, Руководство пользователя

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Industrial Dobby Loom User's Manual Trouble-shooting
Adjusting the Shuttle Sensors Page | 55
extended. So, WHEN IN DOUBT, BACK IT OUT! In other words, better to have
solenoids away from the dobby fingers then too close. This is a bit counter-
intuitive, but it is critical. If the first and last harnesses work, then all the rest
will follow.
If your harnesses are either not lifting or are dropping, the Compu-Dobby
unit requires further adjustment. Check the position of the cables relative to
their slots. Again, each should just touch the rear of the slot where the
solenoid is extended -- too far in or out and it won't behave properly.
Once you've established that you're getting good lifts, you may assume that
the Compu-Dobby unit is adjusted. Please make sure you've tightened the
hex nuts on the adjustment brackets.
10) Finally, create a peg plan that fires two solenoids at a time. Set up
either a 2/4 twill or a 2/2 twill so you can treadle through and see
each shaft lift.
A
DJUSTING THE
S
HUTTLE
S
ENSORS
Symptom : the picker is firing when there is no shuttle in the box.
Remember:
ALL ADJUSTMENTS AND OBSERVATIONS MUST BE MADE WHILE LOOM IS
ON AND IN THE MANUAL MODE!
Adjust the shuttle sensors - in the PLC, when the shuttle is in the right box,
#12 will light and #13 for the left side box.
You need to check the alignment of the sensors mounted at the side and in
front of the shuttle boxes. The sensor on the side has a green light on the
end that will light when the shuttle is in the box. If the shuttle is not in the
box, it should have an orange light.
The sensor on the front checks to see if the bobbin is out of thread. It will
normally be green. It will turn orange when the bobbin is out of thread and
the reflective tape on the bobbin is exposed. This sensor will stop the loom
when the bobbin is out of thread. You will not normally see it change color,
as it happens too quickly.
To make the adjustment
1) Remove the shuttles.
2) Loosen the bolts that hold the shuttle sensors in place slightly.