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MNA1MLSDM00EN, V2.01, 07.2009
PAS4•S 6 Diagnostics and troubleshooting
Portal axes with ball screw drive 59
6 Diagnostics and troubleshooting
6.1 Troubleshooting
Problem Cause Troubleshooting
Sensor overtraveled Sensor Adjust or replace sensors, see page 61
Controller Check controller
Motor load increases, controller
switches off because of overload.
Guides and/or ball screw drive under
mechanical tension or excessive friction
caused by poor lubrication.
Contact service
Noise and vibrations at high
speed of rotation of the ball screw
Speed of rotation of ball screw too high Reduce speed of rotation of ball screw
Poor lubrication (in the case of noise) Lubricate, see page 83
Run-out of the screw caused by impact or
shock
The ball screw must be replaced. Contact
service
Running inaccuracy and noise of
the guides
Poor lubrication Lubricate, see page 83
Damage to the guides, for example by
shock or impact on the carriage
Replace guides, contact service
Carriage has backlash and posi-
tions inaccurately
Backlash in ball screw drive or guides
after a collision or poor lubrication
Contact service