Beckhoff AS2000 Series, Operating Instructions Manual

Page: 73 / 80

Fault correction
Version: 2.2 ─── 73 AS2000
The following table describes only a selection of faults. There can be
a large number of different reasons for a fault, depending on the
particular conditions in your system. The fault causes described be-
low are mostly those which directly influence the motor.
Our applications department can give you further help with your
problems.
Error Cause
Motor standstill, no starting 1 2 4
Motor runs sluggishly 1 3 4 5
Lack of braking effect 4 5
Start-up noises 3 4 5 9
Noises during operation 1 3 4 5 9
High temperature at idling
speed 6
High temperature under load 1 3 6 7
Untrue running behavior 8 9
Grinding noises 10
Output stage fault 4 11 12
Feedback error 13 14
Number Cause Solution
1 Stepper motor terminal or stepper motor module
not enabled Set ENABLE signal and enable the stepper mo-
tor terminal or stepper motor module
Motor overload Check load and reduce if necessary, then
restart and enable the stepper motor terminal,
set ENABLE signal
2 Phase interruption in the power supply or re-
versed motor phases Check the stepper motor terminal and supply
cables, power and feedback, and replace defec-
tive cables
3 Phase interruption after power supply, switching
on Check the stepper motor terminal and supply
cables, power and feedback, and replace defec-
tive cables
Shield of feedback or motor cable defective Check earth connection and shielding
4 Short circuit or earth leakage in the motor cable Replace defective motor cable, then measure
and check
5 Power connector not fitted correctly Check the connectors on the power connector
and on the motor
Interruption in the feedback or motor cable Check cables for broken wire or crushing. Re-
place defective cables, then measure and check