20 – 332 HEIDENHAIN Service Manual iTNC 530
20.1.3 Possible causes of error
Mechanical defects
Wear and tear of mechanical parts
Aging of the machine
Motor defective
Power module defective
Defective power supply module
Defective cables
Poor shielding and grounding
HEIDENHAIN interface board for the SIMODRIVE 611 drive system defective
Old HEIDENHAIN interface board in a modified SIMODRIVE 611 power module
Wrong grounding in connection with the HEIDENHAIN interface boards
PWM interface or CC defective
20.1.4 Sequence for finding errors in the control loop
In the event of error messages regarding movement, acceleration or standstill, for example:
Positioning error
Excessive servo lag
Nominal speed value too high
Movement monitoring
Standstill monitoring
or in case of errors, for example:
Poor workpiece quality
Unusual noise during axis movements
Unusual vibrations
... machine components can be checked in a certain sequence for finding errors. -->
See “Sequence for Finding Errors in the Control Loop” on page 6 – 62.
There is a large variety of possible error causes.
Profound knowledge of the machine and the interaction of the components is very helpful
especially for this type of errors.
When error messages are generated, press the HELP key. You will obtain information on
possible error causes and tips for error elimination.