Haas Vector Drive Troubleshooting Manual page 3

Servo Amplifier - Troubleshooting Guide
Symptom
Alarms 161-164 AXIS DRIVE
FAULT, Alarm 993 AMPLIFIER
SHORT CIRCUIT and 1.993 -
6.993
or
Alarm 2040 VECTOR DRIVE
OR SPINDLE AMPLIFIER-
SHORT CIRCUIT
Alarms 161-164 AXIS DRIVE
FAULT and
Alarm 986 CALIBRATION FAULT
Alarms 161-164 AXIS DRIVE
FAULT and
Alarm 992 AMPLIFIER OVER
CURRENT
Alarms 161-164 AXIS DRIVE
FAULT and
Alarm 994 AMPLIFIER OVER
LOAD
Alarms 161-164 AXIS DRIVE
FAULT and
Alarm 991 AMPLIFIER OVER
TEMPERATURE
Possible Cause Corrective Action
Amplifier detected a short. Check cables for contamination or damage.
Do the Amplifier Short Circuit Inspection section.
Note: If a short-circuit is found, inspect the cable and motor for a
The amplifier has a
short circuit before installing a new amplifier.
internal short circuit.
Amplifier internal Check the command cable from the Maincon / Mocon PCB to amplifier.
calibration. Check the 320 VDC voltage to amplifiers.
Axis mechanical
Axis mechanical blockage.
blockage.
Incorrect application. Change speed and check for tool damage.
Axis mechanical
Remove Blockage.
blockage.
Problem with the cooling
Check cooling fan.
fan.
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