Tool change fault: Tool cannot be changed, wrong tool changed, turret keeps rotating

What does Tool change Case 1 mean?

The tool change process fails, leading to the tool not changing, an incorrect tool being selected, or the turret continuously rotating.

• Incorrect phase sequence of the connection for machine power supply/turret motor
• Damaged PPU interface for turret rotation signal output/in-position signal input
• Loose or damaged wires between PPU and turret
• Incorrect 24 V and 0 V connection for terminals 1 and 10 on the PPU interface
• Connection is wrong or different from PLC program settings
• Damaged turret signal encoder on the machine
• Damaged PPU

Click steps to track your progress.

1. 1

   Check whether the phase sequence of the connection of the machine power supply and/or turret motor is correct.

2. 2

   Check the interface of turret rotation signal output/turret in-position signal input on the back of the PPU for damage, loose wires, or incorrect connections (e.g., terminals 1 and 10).

3. 3

   Check whether the wires between the turret signal input/output interface on the back of the PPU and the turret are loose or damaged.

4. 4

   Check whether the turret signal encoder on the machine is damaged.

5. 5

   If the fault still exists after these inspections, professional replacement and maintenance are necessary as the PPU is likely damaged.