HEIDENHAIN iTNC 530 Service Manual page 299

Flowchart
July 2010
Interchanging the motor encoder inputs on the CC 424(B)
Before interchanging the speed encoder inputs, deactivate
the evaluation of the electronic ID labels.
Enter the value 1 for every bit in MP 7690.
Shut down the control and switch off the main switch of the machine.
Label the speed encoder cables for the axes concerned
and interchange them on the CC 424(B)
(in the example: connectors X15 and X16).
Unscrew the cover plate from the inverter system.
Label the PWM ribbon cables for the axes concerned and interchange
them on the CC 424(B) (in the example: connectors X51 and X52).
Caution: Connect plug-type connector with care! Do not bend the pins!
Screw the cover to the inverter system.
Caution: Do not damage the ribbon cable!
Switch on the main switch of the machine.
Do not confirm the Power interrupted message but
immediately call the MP list.
Interchange the entry values of the axes concerned in MP 120.x.
(In the example: MP 120.0: 52 and MP 120.1: 51)
Switch on the machine and traverse the axes.
Does the error pattern
move to the other axis?
The defect is probably located in the speed encoder input of the control.
Set MP 7690 (evaluation of the electronic ID labels)
to the original value.
(In the example:
from X to Y)
Yes
No
The defect is located in
the speed encoder
(motor encoder) or in
the encoder cable.
18 – 299