Caution: When you do maintenance or repair on CNC machines and their components, you must always follow basic safety precautions. This decreases the risk of injury and mechanical damage.
Danger: Before beginning any work inside the control cabinet the High Voltage indicator light on the 320V Power Supply / Vector Drive must have been off for at least 5 minutes.
Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not fully understand. If you have any doubts about doing a procedure contact your Haas Factory Outlet (HFO) and schedule a service visit.
|Symptom / Alarm:
Software Version 100.20.000.1111 or lower
|Symptom / Alarm:
Software version 100.20.000.1200 or higher
|Possible Causes||Corrective Action|
|Alarm 646 ELECTRICAL SUPPLY ERROR||Alarm 9894 VD REGEN VAC INPUT LOW||The software is outdated.||Make sure the machine has 100.20.000.1011 or higher.|
|There is a AC input phase loss. Or AC input voltage is less than 180 VAC (RMS) or higher than 276 VAC (RMS).||Check the input AC voltage to the Regen VD.|
|The DC BUSS gage on the diagnostic page show incorrect readings.||No change||The software is outdated.||Make sure the machine has 100.20.000.1011 or higher.|
Alarm 650 DC BUSS OVER VOLTAGE
|No change||The bus voltage exceeded 420 VDC. The Regen circuit failed to work during the motor decel.||Measure the incoming voltage to the machine. See the Input AC Voltage section below.|
|The AC input voltage is too high.|
|Alarm 9955 VECTOR DRIVE OR DC POWER UNDER VOLTAGE||No change||The DC buss voltage is less than 100 VDC. The AC input voltage is too low.||Measure the incoming voltage to the machine. See the Input AC Voltage section below.|
|Alarm 647 REGEN LOAD SHORTED||Alarm 9895 REGEN IGBT IPM SHORTED||There is a short circuit on the AC input or Regen output||See the Short Circuit Inspection section.|
|Alarm 993 SHORT CIRCUIT||No change||There is a short circuit on the motor output.||See the Short Circuit Inspection section.|
|Alarm 200 HIGH VOLTAGE POWER SUPPLY OVER-TEMPERATURE||Alarm 9896 REGEN OVERTEMP||There is a problem with the vector drive cooling fan.||Inspect the cooling fan.|
|Alarm 991 AMPLIFIER OVER TEMPERATURE||No change||There is a problem with the vector drive cooling fan.||Inspect the cooling fan.|
|Alarm 991 AMPLIFIER OVER TEMPERATURE and Alarm 993 SHORT CIRCUIT||No change||There is a short circuit.||See the Short Circuit Inspection section.|
|Alarm 648 DC BUS SHORTED||No change||There is a short circuit on the DC BUSS or the DC Buss Circuit Failed to charge.||See the Short Circuit Inspection section.|
|Alarm 9931 UNDEFINED HIGH VOLTAGE POWER SUPPLY FAULT||No change||The AC input phases are not correct.||Make sure the input AC voltage wires are going into the correct terminal.|
|Alarm 9911 AXIS AMPLIFIER CABLE DISCONNECTED||Alarm 9911 AXIS AMPLIFIER CABLE DISCONNECTED
Alarm 9912 AMPLIFIER COMMUNICATION FAULT
|There is no communication with the Regen VD. The RJ-45 cable is unplugged.||Make sure the RJ-45 cable is connected between the Regen VD and Maincon PCB.|
Inspect the spindle motor cables. Make sure the spindle motor cables are not contaminated or pinched.
Inspect the vector drive. Disconnect all the vector drive terminals and do the following tests: