Trouble Shooting: Exchanging Pwm Outputs On The Cc 422 - HEIDENHAIN iTNC 530 Service Manual

20.1.3 Trouble Shooting: Exchanging PWM Outputs on the CC 422

To find out whether the PWM interface on the control or the connected drive system is
defective, you can try another PWM interface on the control.
Use the interface of a funtioning axis!
Modular setup with
CC 422
Example: For fault diagnosis, proceed as follows:
Error in
X-axis
Assumed machine
MP 100.x
parameters
MP 2180.x
MP 120.0
MP 120.1
MP 120.2
MP 120.3
MP 121.0
MP 121.1
Notes and
preliminary
actions
May 2006
= - - - - -CZYX (X = 1st axis, Y = 2nd axis, Z = 3rd axis, C = 4th axis)
= 0 (PWM frequency = 5 kHz for all axes)
= 51 (X axis on PWM output X51)
= 52 (Y axis on PWM output X52)
= 53 (Z axis on PWM output X53)
= 54 (C axis on PWM output X54)
= 56 (1. Spindle on PWM output X56)
= 0 (2. spindle not active)
Exchange the PWM output a functioning axis
(depending on the configuration of the PWM frequencies, unassigned PWM outputs may not
be active)
Please observe that only within the groups X51 to X56 (main drive-control board)
and X57 to X64 (drive-control board) an exchange is possible!
The same PWM frequency should be set for axes to be exchanged!
If different PWM frequencies are entered in parameter group MP 2180.x, ask the machine
manufacturer or HEIDENHAIN for further service measures (the assignment of the machine
parameter blocks for the current or speed controller by means of MP 130.x must also be
regarded).
Before exchanging the speed encoder inputs, deactivate the evaluation of the electronic
ID labels in MP 7690!
Enter value 1 for each bit.
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