February 2012 21 – 343
21.1.9 Error finding: Swapping power modules or output stages of the same type
If you have found that the PWM interface on the CC 61xx is in order, you can test whether you can
traverse the faulty axis with …
îš„ an identical power module (modular inverter system) or
îš„ an output stage with equal power (2-axis module, compact inverter)
Use one of the following:
îš„ Either the power stage or output stage of a functioning axis
îš„ Or a replacement unit
Assumed
configuration for
two 1-axis power
modules
UM 111D: X111 (PWM connection of channel 1) connected with X51 (iTNC, X axis)
X81 (motor connection of channel 1) connected with motor X axis
UM 111D: X111 (PWM connection of channel 1) connected with X52 (iTNC, Y axis)
X81 (motor connection of channel 1) connected with motor Y axis
Assumed
configuration for
a 2-axis power
module
UM 121D: X111 (PWM connection of channel 1) connected with X51 (iTNC, X axis)
X112 (PWM connection of channel 1) connected with X52 (iTNC, Y axis)
X81 (motor connection of channel 1) connected with motor X axis
X82 (motor connection of channel 2) connected with motor Y axis
Assumed
configuration for
a compact inverter
UM 242 D: X111 (PWM connection of channel 1) connected with X51 (iTNC, X axis)
X113 (PWM connection of channel 1) connected with X52 (iTNC, Y axis)
X81 (motor connection of channel 1) connected with motor X axis
X83 (motor connection of channel 2) connected with motor Y axis
If you want to use other types of power stages or output stages, we recommend contacting
your machine manufacturer or HEIDENHAIN. Otherwise you could cause damage or injury to
machine or persons!
It is not necessary to swap any machine parameters for this test routine!
It is of no importance, whether the power stages in the machine are from HEIDENHAIN or other
manufacturers.
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".
Always secure vertical axes to prevent them from falling down before you perform this test!
Danger of electrical shock!
Make sure that the main switch of the machine is switched off and that all connectors and
terminals are free of potential before you engage or disengage them.
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