Fanuc alarm: SV004 - EXCESS V TO MOTOR
An overvoltage was detected in the velocity control circuit.
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An overvoltage was detected in the velocity control circuit.
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An overcurrent was detected in the velocity control circuit.
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Velocity control circuit breaker was turned off.
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Servo motor was detected to have been overload. (Overload)
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Tachogenerator disconnect alarm was detected.
Some drives have a jumper to jump out this circuit which will allow you to verify operation or even get you up and running for a short time. Recommend talking with Fanuc before you take this step.
MIC (Machine Interface Converter) does not match with the setting on the PC side.
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PMC watch dog alarm occurred.
Check all cables and connections to boards in cabinet.
I/O unit was not correctly allocated.
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PMC RAM parity error occurred.
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PMC ROM parity error occurred.
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