Troubleshooting - VLF Trendsetter AL Picker Moves Unevenly

Applies to	VLF Trendsetter AL

Machines affected	All machines.

Error Number	None

Component	Picker

Problem	The picker carriage doesn't move along the track, only moves intermittently, or moves too quickly or too slowly.

Causes and Solutions	Cause 1: Safety loop is broken (picker doesn't move at all) Solution: See VLF Trendsetter AL safety loop.Cause 2: Home/away sensor has failed Solution: Replace the home/away sensor. See VLF Trendsetter AL Sensors and Switches. Cause 3: Connections are faulty. Solution (a): Check for poor connections or faulty wiring between: home and away sensors and Genine 1 board 5 amp stepper driver and stepper motor Genine 1 board and stepper driver Solution (b): Check that the firmware is sending the correct signals to the Genine board. Cause 4: Stepper motor or driver has failed. Solution: See VLF Trendsetter AL Motors. Cause 5: Genine 1 board has failed. Solution: See VLF Trendsetter AL Genine Boards Cause 6: Power supply has failed. Solution: Check the 48V DC power supply (green LED) on the Power Distribution Board (PDB). Cause 7: Power Distribution Board (PDB) has failed. Solution: See VLF Trendsetter AL PDB. Cause 8: The belts in the track are worn. Solution: Check the track belt tensions. They should be ???. Cause 9: The picker carriage is obstructed. Solution: Check the picker carriage for mechanical obstructions and dirt. Clean it if needed. Cause 10: The flextrack along the track is damaged. Solution: Check the flextrack for broken links. If a single link is broken and you have a replacement on site, fix the link immediately. Otherwise, replace the entire flextrack.

Causes and Solutions

Cause 1: Safety loop is broken (picker doesn't move at all)
Solution: See VLF Trendsetter AL safety loop.Cause 2: Home/away sensor has failed
Solution: Replace the home/away sensor. See VLF Trendsetter AL Sensors and Switches. Cause 3: Connections are faulty.
Solution (a): Check for poor connections or faulty wiring between:

home and away sensors and Genine 1 board
5 amp stepper driver and stepper motor
Genine 1 board and stepper driver

Solution (b): Check that the firmware is sending the correct signals to the Genine board.

Cause 4: Stepper motor or driver has failed.
Solution: See VLF Trendsetter AL Motors.

Cause 5: Genine 1 board has failed.
Solution: See VLF Trendsetter AL Genine Boards

Cause 6: Power supply has failed.
Solution: Check the 48V DC power supply (green LED) on the Power Distribution Board (PDB).

Cause 7: Power Distribution Board (PDB) has failed.
Solution: See VLF Trendsetter AL PDB.

Cause 8: The belts in the track are worn.
Solution: Check the track belt tensions. They should be ???.

Cause 9: The picker carriage is obstructed.
Solution: Check the picker carriage for mechanical obstructions and dirt. Clean it if needed.

Cause 10: The flextrack along the track is damaged.
Solution: Check the flextrack for broken links. If a single link is broken and you have a replacement on site, fix the link immediately. Otherwise, replace the entire flextrack.

Technical contact	Rob Bouchal
Date submitted	29 May 2000
Date modified

Picker moves unevenly