Troubleshooting
06.00 | PPU-P | Assembly and Operating Manual | en | 389323
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6.3 Rough sequence
Possible cause
Corrective action
Use of unsuitable valves.
Check valve switching times and consult
SCHUNK contact person if necessary.
Valve and control specifications
Product is actuated incorrectly.
Check actuation based on sequence
diagram.
If necessary, use the PLC funtion module.
Switching points have not been set correctly. Check the UH and UV sensor settings.
Mounting and adjustment of sensors IN
Permissible lengths of connection lines
exceeded.
Shorten compressed air lines from valves to
product.
Very quick operating cycle
Slow down sequence by adjusting
compressed air throttles.
Adjustment of regulator valves
Slow down sequence by adjusting UH sensor
upwards.
Operating pressure too high.
Check maximum pressure of air supply.
6.4 Impact in the end positions
Possible cause
Corrective action
Shock absorber defective.
Change and adjust shock absorber.
Adjustment and replacement of shock
absorbers
Shock absorber postponed too far.
Readjustshock absorber setting.
Exhaust throttle defective.
Change the function of the throttle and
change if necessary.
Adjustment of regulator valves
6.5 Module does not achieve the opening and closing times?
Possible cause
Corrective action
Sensor inaccurately adjusted or defective.
Adjust sensor or if necessary change sensor.
Mounting and adjustment of sensors
Proximity switch defective or set incorrect.
Change sensor.
Cable breakage.
Change sensor.
Replace connection cable extension
(provided by the customer) if necessary.