Hello,

We have problem with our Lathe C1 axis has two encoders one active another passive mounted on the chunk chaft. Passive encoder measurments are different from encoder mounted on the motor because of that we receive error 25001. Maybe someone can explain how to disable passive encoder until we get new one for replacement?

Hi,

You can't just disable an encoder.

The configuration you likely have is that the passive encoder is used for motor rotor position purely for the drive system and the active encoder for NC axis(or spindle) position.

The fault you have displayed is a hardware fault not a position mismatch fault. I would be suprised if the system is even monitoring the passive encoder position in the NC. 

You will have to replace the encoder and/or check the wiring.

Pee

PISCEAN 2010

Hello,

[snip] What type of machine? What is the application of C axis?

Assuming it is spindle + C axis then, for C axis precise positioning external encoder must have been configured. If you have to disable this, have you checked which encoder you would configured? By configuring motor encoder for C axis - Will it be precise & will achieve the desired accuracy? 

Please check above points.   

 System Sinumerik 810D machine Trens sbl500 spindle axis has two encoder passive not working any more (need to be replaced) but we need to be sure that another encoders works fine and run spindle with active encoder. We only need to disable passive encoder until we get replacement part from Heidenhain

Pee El Sea

Hi,

You can't just disable an encoder.

The configuration you likely have is that the passive encoder is used for motor rotor position purely for the drive system and the active encoder for NC axis(or spindle) position.

The fault you have displayed is a hardware fault not a position mismatch fault. I would be suprised if the system is even monitoring the passive encoder position in the NC. 

You will have to replace the encoder and/or check the wiring.

Pee

 Hello Pee,

I was trying to disable both C axis encoders by changing 30200 to 0 and 30240(0) to 0, 30240(1) to 0 but still after restart I have faults 25201 and 300504 (fault of motor transducer) why?

Hello

I have SINUMERIK 840D and one external encoder on spindle Gear box

If i discount encoder socket on X421 , show Alarm 25000 and 25001

If connect socket on X421 , have only 25001 alarm.

If change MD30200 from 2 to 1 or 0 , after push machine on button, communication nc fail and MD30200 back 2 automatic 😐.

How can i use only one encoder for spindle motor?

Thanks.