February 2012 21 – 341
21.1.8 Error finding: Axes swapping
To find out whether the connected drive system or the PWM output of the CC or the motor output
of the UEC is defective, you can use the interchange method.
Exchange
constellations
Error messages related to the drives of a machine tool are mostly caused by the machine tool
(mechanics, hydraulic/pneumatic system, lubrication), the tools or the electrical drives (motors,
power modules, output stages of a UEC) themselves.
A defective PWM interface on a CC 61xxx is rarer.
The interchange method is quite complex here, as in addition to the PWM/motor outputs, you also
have to swap the position encoder inputs and the speed encoder inputs, and you must adapt the
parameter settings.
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".
CC 61xx
Exchange constellation Flowchart
Swapping two single-speed axes or two double-speed axes Swapping axes on a CC 61xx
Swapping single-speed axis <--> single-speed spindle or
double-speed axis <--> double-speed spindle
Swapping axis and spindle on
a CC 61xx
UEC 11x
Exchange constellation Flowchart
Swapping two single-speed axes or two double-speed axes
with the same rated current
Swapping axes with the same
rated current on a UEC 11x
Swapping two single-speed axes or two double-speed axes
with different rated currents
Swapping axes with different
rated currents on a UEC 11x
Swapping single-speed axis <--> single-speed spindle or
double-speed axis <--> double-speed spindle
Swapping axis and spindle on a
UEC 11x
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