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You're welcome but please do update us on the results and what you've done to fix it.

Cheers!

It's the power supply. Once it goes unstable everything will be unstable.

The encoder is a low voltage part, 5VDC usually. As long as the encoder part number is the same as the old one, they should be interchangeable.

The 200VAC/400VAC is the rating for the motor.
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Check the alarm lights/code on the servo drives themselves.

It is highly unlikely that the failure is on all 3 modules. Parity errors in a lot of cases point to a faulty power supply. I don't see any accessible test points for the power supply (P/N 6FC5114...

Grab the Siemens control manual and figure out what the alarm lights mean. Too many red lights (possibly alarms) in your photo.

Congrats! Glad to hear it worked for you.

Like I said on my last post, post picture of the monitor/s. A picture of the board and the video connector. Most of the Hurco CRT monitors I've seen lack obvious part number marking for the monitor...

How old is this this machine? more than 15 years old?

Have the main control power supply, and the top boards of the spindle and servo drives rebuilt. The wear item parts on these boards are...

Your CRT monitor is working fine. It is displaying what is being sent by the graphics board which is your problem BTW.

Post of nudies of the monitor. It's hard to speculate without any pics

The "new" motor runs OK CCW therefore the encoder and cabling are good, the same signals are used for CW operation. Next step is swap the servo drive with a known working one before you start poking...

Remember the drive signal that moves the motor is a very strong 3-phase AC, running the motor at elevated temperatures just below the thermal cutoff will demagnetize the rare-earth magnets faster....

The motor got too hot, lost most of its magnetism hence the low torque. Have it re-magnetized by a reputable motor shop.

Ray,

Clean up your PM folders, its full an I can't send you any PM.

Thanks!

Driver ICs cost like $5 off eBay, you got nothing to loose at this point and end up with a spare drive that might me more robust than the original. Add thermal paste to the IC's heat spreader while...

Do you know the make and model of the axis drive which are giving you the error? How is the airflow inside the cabinet that houses these drives?

Given the age of the machine, if the drives have...

I hope the 4-axis version has better thermal management. Your picture of the older driver board has the driver IC poorly mounted on the case. There are 4 screws holding the 3 driver ICs and the one...

Yes, those are the ones I'm talking about. 50mV is not a hard number, you need to see a reading that is reasonably less close to 0V.

I'm just curious but on your picture, there's a more modern...

Keep us updated of your progress, pictures would be nice :cheers:

OK. Now I know which control you have.

The error display you are getting points to a corrupt ROM according to the Yaskawa maintenance manual. Could be true but I doubt it. Your machine is over 30...

I repair and rebuild them. Check which model of power supply you have in the control rack, e.g. CPSxxx and PM me. If you are not sure send me pics here: ej25awd @ gmail.com. Remove the extra spaces

How old is this machine and which control? If it is like 20+ years old, it needs to have at least its power supply rebuilt. Memory errors sometimes point to a unstable power supply.

Hi everyone!

I'm an electronics engineer and offer the following services.

- industrial/CNC-related electronics troubleshooting/repair/rebuild of the following: AC/DC spindle/servo drives,...

You already know which of 4-pin male connector on the board is for the Z-axis, trace which driver IC it's coming from and replace the faulty stepper driver IC.

Check the cable for the voltage rating xxkV.

You can buy the following cables off eBay with different ratings:

20kV -> 20 Feet HV Tesla Coil Wire High Voltage Cable 24KV 20KV Belden Free...

What is the alarm code being displayed on the 7-segment LED of the actual drive?