The Haas Vector drive is the source of power for the spindle
motor and the servo amplifiers. There are three sizes of Haas
Vector drives: 20HP [1], 40HP [2] and 60HP [3].
Electrical Diagram
Haas Technical Documentation
Vector Drive - Troubleshooting Guide
Scan code to get
the latest version
of this document
Translation
Available
Copyright 2017 by Haas Automation, Inc. No unauthorized reproduction | Last Published On August 21, 2017 1/7
Symptom
Possible
Causes
Corrective Action
Alarm 123 SPINDLE DRIVE FAULT
and Alarm 993 SHORT CIRCUIT
Alarm 2040 VECTOR DRIVE OR
SPINDLE-AMPLIFIER 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. For Vector Drive short-
circuit inspection see section below.
Alarm 123 SPINDLE DRIVE FAULT
Alarm 648 DC BUS SHORTED
Alarm 292 HIGH VOLTAGE POWER
SUPPLY FAULT and Alarm 160
LOW INCOMING LINE VOLTAGE
There is a
problem with
the DC Bus.
Compare the measured DC voltage to the Diagnostic page.
Alarm 292 HIGH VOLTAGE POWER
SUPPLY FAULT and Alarm 647
REGEN LOAD SHORTED
There is a
problem with
the REGEN.
Measure the resistance across the REGEN leads.
Alarm 292 HIGH VOLTAGE POWER
SUPPLY FAULT and Alarm 200
HIGH VOLTAGE POWER SUPPLY
OVER–TEMPERATURE
Alarm 2038 VECTOR DRIVE OR
SPINDLE AMPLIFIER–OVER
TEMPERATURE
There is a
problem with
the vector
drive cooling
fan.
Inspect the cooling fan.
Alarm 292 HIGH VOLTAGE POWER
SUPPLY FAULT and Alarm 444
REGEN REMAINED ON TOO LONG
There is a
problem with
the incoming
AC power.
Measure the incoming voltage to the machine.
The Machine Fails to Maintain
Spindle Orientation.
The vector
drive output is
unbalanced.
Measure voltage outputs across the vector drive terminals.
Copyright 2017 by Haas Automation, Inc. No unauthorized reproduction | Last Published On August 21, 2017 2/7
Electrical Safety
Turn the main circuit breaker [OFF].
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 60 seconds
Copyright 2017 by Haas Automation, Inc. No unauthorized reproduction | Last Published On August 21, 2017 3/7
Short Circuit Inspection
Corrective Action:
Inspect the spindle motor cables. Make sure the spindle motor cables are not contaminated or pinched.
Inspect the vector drive. Disconnect all the terminals. Set your
meter to Ohms.
Check terminals 4, 5, 6 to chassis ground.
If the meter does not show OPEN (O.L) the vector drive is
damaged.
Set your meter to diode test mode.
Put the red lead on terminal 3 (-) with the black lead measure
terminals 2 (+), 9 (A), 10 (B) and 11 (C).
Wait until the reading on your meter settles. If the meter does not
show a voltage drop ranging from 0.2 to 0.8 volts the vector
drive is damaged.
Put the black lead on terminal 3 (-) with the red lead measure
terminals 2 (+), 9 (A), 10 (B) and 11 (C).
Wait until the reading on your meter settles. If the meter does not
show OPEN (O.L) the vector drive is damaged.
Copyright 2017 by Haas Automation, Inc. No unauthorized reproduction | Last Published On August 21, 2017 4/7
DC BUS
Corrective Action:
Press [POWER ON]. Measure the DC voltage between
terminals 2 and 3 on the vector drive. Compare the measured
voltage with the DC VOLTAGE on the diagnostics page on the
control. The readings must match +-2%.
If the readings do not match, the problem can be:
A bad connection on the 640C cable. Make sure there is a tight
connection on the J3 connector on the Vector Drive and the P17
connector on the Maincon/Mocon.
A faulty Vector Drive if you have incorrect voltage at P17.
A faulty Maincon/Mocon if you have the correct voltage on the
640C cable at the P17 connector of the Maincon/Mocon. There
is 0.01 VDC for every 1 VDC Bus. For example, 320 VDC must
show 3.2VDC.
Disconnect the DC Bus cables from terminals 2 and 3 on the
vector drive. Power on the machine. Monitor the DC VOLTAGE
on the diagnostics page of the control.
If the DC Bus goes back to the nominal value, there is a short in
one of the servo amplifiers. A low resistance or a short is a sign
of a faulty servo amplifier.
If the readings match and the alarm continues, the problem is a
faulty vector drive.
Copyright 2017 by Haas Automation, Inc. No unauthorized reproduction | Last Published On August 21, 2017 5/7
Regen Load
Corrective Action:
Press [POWER OFF]. If the vector drive voltage indicator light is
on, do not touch the electrical components. The high voltage in
the control cabinet can kill you. Wait for the voltage indicator LED
on the vector drive to go off completely.
Disconnect the REGEN load leads from the vector drive at
terminals 1 and 2. Measure the resistance across the leads. The
reading must be as follows:
2-resistor box: between 9.5 and 12.5 ohms.
3-resistor box: between 6.3 and 8.3 ohms ohms. (As shown in
the illustration.)
4-resistor box: between 4.6 and 6.6 ohms.
If the REGEN loads are within specification, there can be a
problem with the vector drive. Measure the resistance across
terminals 1 and 3 on the vector drive. A short is a sign of a faulty
vector drive.
Cooling Fan
Corrective Action:
An over-temperature alarm is generated when the vector drive's
heat-sink reaches 90°C. The cooling fan must turn ON when the
heat-sink temperature reaches 50°C. The cooling fan must turn
OFF as the heat-sink cools down.
Measure the temperature of the vector drive's heat-sink through
the exhaust vents when this alarm occurs. If the temperature is
above 60°C and the fan is not ON, the vector drive has a faulty
cooling fan. Replace the cooling fan.
Copyright 2017 by Haas Automation, Inc. No unauthorized reproduction | Last Published On August 21, 2017 6/7
The voltage must be 160-175VDC in all three readings. If any of the voltage readings is 0V or 330V, then this is a sign
of an unbalanced output from the vector drive.
Incoming AC Voltage
Corrective Action:
Measure the incoming voltage to the machine. Make sure that
the incoming voltage is within the range of the transformer’s tap.
Move the lines to the correct tap if needed.
Unbalance Output Inspection
Corrective Action: Disconnect the motor cables at the vector
drive. Push [POWER ON]. Push [RESET] to clear any alarms.
Use a multimeter to measure the DC voltage across the following
terminals on the vector drive (see the illustration):
3 and 9
3 and 10
3 and 11
Copyright 2017 by Haas Automation, Inc. No unauthorized reproduction | Last Published On August 21, 2017 7/7
Loading...