Solutions
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- Make sure that the clamps are not deformed.
- Check for particle buildup under the clamps.
- Check the lock/unlock bar actuation.
- With the backbone up, the clamps on the drum, and the air off (either system air or
lock/unlock air hoses disconnected at the manifold), check that the locking bar can be
moved easily by hand.
- Move the locking bar by the locking pins or by moving the rod end in the trailing edge
backbone cylinder cutout. If the lockbar can not be moved by hand, there is an obstruction
inside the backbone.
- Check the lock sensors.
- Enter the
tec lock and tec unlock commands repeatedly and check the
sensor state in the lock and unlock positions.
- If the sensors are not switching properly, adjust the sensors as needed using the sensor test jig (90-1112A) for MPE devices with reed switches or use the
tec command
- If the sensors seem to switch properly, move the locking bar by hand and use a
multimeter to see where the switching occurs.
- When locking the clamps, the sensor should switch between 1 and 2 mm prior to the end of
stroke.
- When unlocking the clamps the sensor should switch between 0.5 and 1 mm (closer to 1mm
preferred) prior to the end of stroke.
- For MPE only: If the sensors cannot be adjusted properly, increase the lock/unlock above 5 seconds (
set aldly teul). Do not disable the lock/unlock
sensors unless you are absolutely sure they cannot be adjusted properly. Replace the
sensors as soon as possible.
- Check the lock/unlock actuation times.
- If the actuation is taking unusually long, adjust the speed controls as necessary. If
the speed controls can’t be adjusted to within the normal limits, increase the
actuation time-out to an appropriate level (
set aldly
teul <#>). Report the problem to Creo engineering.
- Check the backbone sensors.
- If the sensor turns on too early on the TEC backbone downstroke, the clamps may be
trying to unlock before they are set properly. As a last resort, disable the sensor.
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