Troubleshooting: Interchanging Pwm Outputs On The Cc 422 - HEIDENHAIN iTNC 530 Service Manual

20.1.5 Troubleshooting: Interchanging PWM outputs on the CC 422

To find out whether the connected drive system or the PWM interface on the CC is defective,
the interchange method can be used.
Use the interface of a functioning axis.
Modular setup with
CC 422
Error in X-axis
Example
Example machine
MP 100.x
parameters
MP 2180.x
MP 120.0
MP 120.1
MP 120.2
MP 120.3
Notes and
preliminary
action
July 2010
DANGER
Before you connect drives to other interfaces for error localization:
Make sure that there are no ground faults or short circuits in the drive components
(inverters, motors, etc.) --> See service manual "Inverter Systems and Motors".
= - - - - -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)
Switch the PWM output with that of a functioning axis.
(depending on the configuration of the PWM frequencies, unassigned PWM outputs can be
inactive).
The outputs can only be switched within the main DCB and the auxiliary DCB.
The same PWM frequency must be set for the axes to be switched!
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