Q：The 4 position power turret keep rotating on the CNC lathe machine, check voltage of each position Hall switches, the tool number 1 is low level, tool number 2, 3 and 4 are high level, is it correct? Is the Hall component broken?

And there are 1001 and 1002 alarms on CNC control GSK 980TD, “No tool number signal found and tool changing time too long”, what should I do?

A: Tool number 1 is low level voltage, others are high level, this is fine, alarm 1001 and 1002 means the 4 position power turret could not find the positioning signal, which causes the tool change time too long, so you can adjust the magnet of the hall component and the inductive sensor position, the problem will be solved.

4 station power turret:

http://www.cncmakers.com/cnc/controllers/Tool_Post_Turret/4_Station_Tool_Posts.html

Inductive Sensors:

http://www.cncmakers.com/cnc/controllers/Tool_Post_Turret/Inductive_Sensors_For_Tool_Posts.html