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Servo Amplifier - Troubleshooting Guide
LAST UPDATED: 09/19/2018
Servo Amplifier - Troubleshooting Guide
Introduction
There are four versions of Haas amplifiers. 30A [1],
45A [2], 60A [3], and 90A [4]. All four operate the
same way.
Smart Amplifier assemblies are powered from the
320 VDC Bus from the Vector Drive assembly or
Minimill Power Supply. They each have a red LED
FAULT light, and a green LED POWER ON light to
show the status of the amplifier.
Page 1 of 8 pages
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Related Manuals for Haas Vector Drive
Summary of Contents for Haas Vector Drive
- Page 1 45A [2], 60A [3], and 90A [4]. All four operate the same way. Smart Amplifier assemblies are powered from the 320 VDC Bus from the Vector Drive assembly or Minimill Power Supply. They each have a red LED FAULT light, and a green LED POWER ON light to show the status of the amplifier.
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Page 2: Electrical Safety
Danger: Before beginning any work inside the control cabinet the High Voltage indicator light on the 320V Power Supply / Vector Dr seconds. Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not fully understand. If you ha contact your Haas Factory Outlet (HFO) and schedule a service visit. Electrical Diagram Symptom Table... - Page 3 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. Alarm 2040 VECTOR DRIVE OR SPINDLE AMPLIFIER- SHORT CIRCUIT Alarms 161-164 AXIS DRIVE Amplifier internal Check the command cable from the Maincon / Mocon PCB to amplifier.
- Page 4 Servo Amplifier - Troubleshooting Guide • Install a ferrite filter P/N 64-1252 to the Z-axis motor power cables [2]. • If the machine has the ferrite filter installed and the alarm persist replace the 60A servo amplifier with (P/N 93-32-5552F or later).
- Page 5 Servo Amplifier - Troubleshooting Guide Place MultiMeter Leads Here Instructions Set the meter to ohms, and take the following readings: Ground screw to red, wht, and blk terminals If the meter does not show open (o.l) the amplifier is damaged. Set the meter to Ohms, and take the...
- Page 6 Servo Amplifier - Troubleshooting Guide Set the meter to diode test mode, and take the following readings: Red lead on HV (-) and black lead to HV (+), RED, WHT, and BLK terminals If the meter does not show a voltage drop ranging from 0.2 to 0.8...
- Page 7 Servo Amplifier - Troubleshooting Guide Servo Motor Short Circuit Inspection Corrective Action: Check the cables for a short: Make sure the axis servo motor cables are not contaminated or pinched. Contaminated or pinched cables can cause a short. Replace the cables if necessary. Inspect the servo motor.
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Page 8: Cooling Fan
Corrective Action: Note: The maximum temperature for safe operation of Haas CNC machines is 122 °F (50 °C). The amplifier over temperature sensor will trigger at 195 °F (90 °C). Make sure the cooling fan for the servo amplifiers operates correctly.
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