Also consider using differential en/de-coders on each side to  
eliminate the influence noise.
It's fairly easy to add those little chips if the signal is not  
differential already.
Rainer

On Jul 29, 2009, at 5:42 AM, Sven Wesley wrote:

> Do you use shielded cables for your encoders? I know that the same  
> error
> appeared on two different machines when the cables were unshielded.  
> One got
> it when running a servosystem and the other was a stepper machine  
> that got
> it when homing (unshielded home switch cables).
> Regards,
> Sven
>
> 2009/7/29 Lindenmayr Bernd <[email protected]>
>
>> Hi Group!
>>
>>
>>
>> I´m using EMC 2.4~pre and I want to tune the PID for my Servo- 
>> System for
>> only one linear Axis. The case is, when I drive with high speed and  
>> dynamic
>> periodic movements it works. In slower movements and in the  
>> situation of no
>> motion e.g.  after I put the machine on, the error occurs, but not  
>> in any
>> case!! I tried to tune the servo system without any improvements!!
>>
>> Even if I set the FERROR and MIN_FERROR to 100.0 in the ini-file,  
>> it has no
>> effect.
>>
>> Any idea? How can I deactivate this error message that the motion
>> continues?
>>
>>
>>
>>
>> Thanks very much,
>>
>> Bernd
>>
>>
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