HEIDENHAIN iTNC 530 Service Manual page 335

Flowchart
CC 424
May 2006
Interchanging the PWM outputs of CC 424
Switch off the main switch of the machine tool.
Unscrew the cover plate from the inverter system.
Interchange the PWM ribbon cables of the axes
concerned at CC 424
(in the example: Connectors X51 and X52).
CAUTION: Handle the ribbon cable connectors
with care! Do not bend the pins!
Connect the motor encoder cables to the correct
PWM outputs of the CC 424
(in the example: Connectors X15 and X16).
See assignment in the introduction to this chapter.
Screw the cover plate to the inverter system.
CAUTION: Do not damage the ribbon cable!
Switch the main switch of the machine on.
Do not confirm the Power interrupted message but
immediately call the MP list and in MP 120.x
interchange the entry values of the axes concerned.
(In the example: MP 120.0: 52 and MP 120.1: 51)
Confirm the Power interrupted message and switch
the control voltage on.
Traverse the axes.
Does the error pattern
move to the other axis?
(In the example from
X to Y)
The defect is probably located
in the PWM interface of CC 424.
Note
Set MP 7690 (evaluation of the electronic ID label) to its original state after the test!
No
Yes
The defect is probably located in
the drive system (power module,
motor, cables, etc.)
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