Our Team Expertly Repairs Yaskawa AC Servo Drive CACR-IR_SB series

Precision Zone specializes in Yaskawa product repairs servicing a wide range of AC Servo series such as Yaskawa SGDH Sigma 2 Series Servopack

Yaskawa AC Servo Drive SGDH Sigma 2 Series have 16 different kW sizes and they can come in 100/220V or 400V configurations.

The SGDH Servopack has several mounting options which lend it well to advanced forms of automation. The SGDH drives can use SigmaWin Plus or a digital operator to change parameters, check alarms, or monitor the dive while in operation.

When assessing the functionality of a drive, our engineering team typically conducts a four-step check:

  • Visual Overview Check
  • Static Test
  • Checks Under Power
  • Alarm Codes Verification

This overview is Precision Zone’s basic troubleshooting process. Once our repair team starts on the job we use specialized, customized test fixtures, Huntron tracker, signal generator, oscilloscope, milli and mega ohm meters and other necessary tools to assure quality repair. Most importantly, every repair is fully tested in custom-built simulators under load to replicate real-life working environment. Precision Zone goes as far as using heat chamber and overnight dynamic testing to guarantee performance of the repaired product when it comes back to the customer.

REPAIR PROCESS FOR SGDH SIGMA 2 SERIES SERVOPACKS

Visual Overview Check

When conducting a visual check, the technician inspects the drive for any mechanical damage to the drive and print circuit boards. Then the team proceeds to verify connections are tight and correct inside the drive and there are no loose screws, wires or particles. Additionally, we look for any burn marks anywhere on the components or chassis. During the visual inspection technical team notes excessive dirt on cooling components and records clogged heatsink.

Static Test Basic

Precision Zone repair technicians use digital multimeter with diode testing capabilities and resistance measurement to conduct a static test. In the instance of Diode testing, our team is looking to check input and output modules.

Input Modules Testing

Multimeter Positive Lead Multimeter Negative Lead Diode Check
Negative Capacitor Terminal R S T Approximately 0.3-0.4 V
R S T Positive Capacitor Terminal 0 L Displayed

Output Modules Testing

Multimeter Positive Lead Multimeter Negative Lead Diode Check
Negative Capacitor Terminal U V W Approximately 0.3-0.4 V
U V W Positive Capacitor Terminal Approximately 0.3-0.4 V

We verify capacitor value using capacitor meter and examine functionality of circuit breakers and contactors in the drive.

The last step in a static test process is checking the Regen Resistor. The technicians measure the resistance between Y3 and Y4. Resistance output results will vary depending on the size of the drive, but should not be shorted.

Alarm Codes Troubleshooting

The alarms on the servopack are displayed through a seven segment display located on the front of these drives or by using a digital operator. The codes displayed are:

Alarm Code Code Type Cause
2, 4, 5, Soft Alarm Corrupted data or parameter settings
3, CPF00, CPF01 Control Board Alarm
30, 32, 40 Braking Circuitry Alarm Regen circuitry failure of the drive
40, 41, F1 Power Alarm Over voltage, verify incoming power
10 Motor or Encoder Alarm Over Current motor or cables
51 Motor or Encoder Alarm Incorrect connections between the motor and the drive
71, 72, 73, 7A Load Alarm Too high or too low of a load
81, 82, 84, 85, 86 Encoder Alarm
83 Battery Alarm



Recently Repaired Products

Yaskawa CACR-IR30SB image CACR-IR30SB is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Control Section/Board, Bad DCCT, Bad Gate Section/Board, Bad Output Transistors/SCRs, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Current Control
Rated Output Capacity: 3.0kW
Axis Specification: 1 Axis
Application: For CNC, Analog, Through-hole Mounted

Yaskawa CACR-IR10SB image CACR-IR10SB is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad DCCT, Bad Gate Section/Board, Bad Output Transistors/SCRs, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Current Control
Rated Output Capacity: 1.0kW
Axis Specification: 1 Axis
Application: For CNC, Analog, Through-hole Mounted

Yaskawa CACR-IR15SB image CACR-IR15SB is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad DCCT, May Require Board Replacement, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Current Control
Rated Output Capacity: 1.5kW
Axis Specification: 1 Axis
Application: For CNC, Analog, Through-hole Mounted

Yaskawa CACR-IR44SB image CACR-IR44SB is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Input Diodes/SCRs, Bad Regen Section
Drive Type: CACR AC Servo Drive
Control Type: Current Control
Rated Output Capacity: 4.4kW
Axis Specification: 1 Axis
Application: For CNC, Analog, Through-hole Mounted

Yaskawa CACR-IR03SB image CACR-IR03SB is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Input Diodes/SCRs, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Current Control
Rated Output Capacity: 0.3kW
Axis Specification: 1 Axis
Application: For CNC, Analog, Through-hole Mounted