Download and fillout the Vector Drive Inspection Report Checklist below before replacing any parts.
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||Possible Causes||Corrective Action|
Alarm 123 SPINDLE DRIVE FAULT and
Alarm 993 SHORT CIRCUIT
|The vector drive detected a short circuit.||Inspect the Vector Drive and the Wye-Delta contactors for a short circuit. For Delta-Wye Contactor Troubleshooting refer to: Wye-Delta Contactor - Troubleshooting Guide - NGC. See the Vector Drive short-circuit inspection section below.|
Alarm 123 SPINDLE DRIVE FAULT
Alarm 160 LOW INCOMING AC LINE VOLTAGE
|There is a problem with the DC Bus.||Compare the measured DC voltage to the Diagnostic page. See the DC BUSS section below.|
Alarm 123 SPINDLE DRIVE FAULT
Alarm 160 LOW INCOMING AC LINE VOLTAGEat power on.
|The vector drive J3 connector inserted upside down.||The old style Vector Drive J3 connector does not have ribs and can be accidentally inserted upside down. This could damage the pins. Correctly inserted, the latch faces away from the Vector drive.|
|Alarm 647 REGEN LOAD SHORTED
||There is a problem with the REGEN.||Measure the resistance across the REGEN leads. See the Regen Load section below.|
Alarm 648 DC BUS SHORTED
|There is a problem with the REGEN circuit on the vector drive.||Check the regen circuit on the vector drive. See the Regen Load section below.|
|Alarms 9911 AXIS AMPLIFIER CABLE DISCONNECTED||The motor drive cable from Maincon to Amplifier is not connected or has a bad connection.||Check the corresponding axis motor drive cable from the Maincon to the Amplifier and make sure is seated correctly.|
|Alarm 200 HIGH VOLTAGE POWER SUPPLY OVER–TEMPERATURE
||There is a problem with the vector drive cooling fan.||Inspect the cooling fan. See the Cooling Fan section below.|
Alarm 444 REGEN REMAINED ON TOO LONG
|There is a problem with the incoming AC power.||Measure the incoming voltage to the machine. See the Incoming AC Voltage section below.|
|The Machine Fails to Maintain Spindle Orientation.||The vector drive output is unbalanced.||Measure voltage outputs across the vector drive terminals. See the Unbalance Output Inspection section below.|
|The wye contactor has a loose connection on the buss bar or jumper cables.||Inspect the wye-delta assembly for loose connections.|
|Alarm 119 INPUT AC LINE OVERVOLTAGE||The incoming voltage to the machine is too high.||The check incoming voltage and transformer taps.|
|The vector drive over voltage cable is not plugged in or defective.||Disconnect the 970 cable from connector J1 on the vector drive. Inspect the J1 connector pins and the pins on the 970 cable for damage. Make sure that the cable is connected to the correct I/O PCB location.
|Alarm 9931 UNDEFINED HIGH VOLTAGE POWER SUPPLY FAULT||The cable from the vector drive to the I/O PCB is not plugged in correctly.||Make sure the cable from the Vector drive is correctly connected to the I/O PCB at P49.|
|Alarm 4.182 S (SPINDLE) AXIS ENCODER CABLE FAULT||The Vector Drive cables are missing the ferrite filter or wrong filters nstalled.||Refer to the Spindle Encoder - Troubleshooting Guide - NGC|
|Vector Drive ground cable is routed in the large ferrite filter|
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: