The machine has an ABB or Eaton brand assembly. The DELTA contactor is not engaging, or the WYE contactor is welded shut.Īlarm 4.9973 INVALID POWER CONTROL STATE DETECTED Make sure you have all three phases from the top of the main circuit breaker to the main transformer. There is a problem with the incoming AC line power.Ĭheck the incoming AC line voltage. The WYE/DELTA patch is enabled and the WYE/DELTA contactors do not have a feeback cable.Īlarm 9973 or 4.9973 INVALID POWER CONTROL STATE DETECTED when the machine accelerates to maximum RPM. See the NGC-WYE-DELTA with Feedback Troubleshooting section below. The WYE/DELTA feeback cables are not connected or not connected correctly. Go to: Vector Drive - Troubleshooting Guide to troubleshoot the vector drive.Īlarm 4.9973 INVALID POWER CONTROL STATE DETECTED after software update. Inspect the vector drive and look for a shorted output. Inspect the encoder belt, encoder connections, encoder gaps and encoder alignment.Īlarm 123 SPINDLE DRIVE FAULT at any spindle speed, and Alarm 2040 VECTOR DRIVE OR SPINDLE AMPLIFIER-SHORT CIRCUIT. The encoder belt is damaged, or the Non-Contact Encoder has a fault Refer to Wye Contactor Voltage Inspection section. There is no voltage from the I/O PCB to the Wye contactor coil. There is an open coil on one of the Wye-Delta contactors.Ĭheck the Wye-Delta connections for arching or burn marks. Alarm 2041 VECTOR DRIVE OR SPINDLE AMPLIFIER-OVERLOAD, and/or the spindle load pegs to 200% when any spindle speed is commanded.
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