Today I drove to a company that just south of the office, in Elk Grove Village, IL. The problem that the customer had was the servo alarm, and it's an old machine that used the Toyoda-made servo amplifier. Thus, I had to use the PUK control unit to read the alarm from the servo amplifier.
At first, we thought it was the encoder cable being bad, but after a general inspections we found no worn on the encoder cable. In addition, we did not have any encoder cable in stock so if even it was the cause of the encoder cable we couldn't do anything about it. However, we did have a a new servo motor in stock that we could replace the old one.
The nature of this problem happened intermittently hence it was hard for us to diagnose what exactly was the problem causing the servo alarm. Nonetheless, we replaced the servo motor, and had the customer run overnight then next morning we would come back and check if there is any alarms at all.
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