Need Help!- ALARM # 22 FEEDBACK SYSTEM MALFUNCTION (1,0,&0043)

[epordonez]

Hi guys. we're currently using mazak cnc lathe machine mazatrol pc fuzion 640T,until we encounter this kind of alarm.anyone know on how to eliminate this and what could be the cause?

[deanr]

I am having the same issue with one of my CNC's did you ever find the problem and could fix this? Please let me know if you can help me.
Thanks Dean

[epordonez]

deanr,

it could be a damage servo motor amplifier.replace the amplifier.

[onthebumper]

It's definitely a problem with your servo system. One of your drives should be flashing alarm 43. If there is another amplifier/drive with the same model number (MDS-....) try to swap it. Make all the connections the same but make sure you swap the rotary switch settings between the drives (little blue switch behind a door towards the top of the drive). If the problem follows then it is in the drive. If it does not follow you may have a problem with the encoder as this is a feedback alarm.

[cncpiotr]

In my case. Was torn wire in the encoder and sometimes there was no contact