Drives-AC Servo Yaskawa SGDH Sigma II | Repairs Precision Zone

Our Team Expertly Repairs Yaskawa AC Servo Drive SGDH Sigma II 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

SGDH-50AE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Leaky Capacitors (Open, Corroded Traces), Bad Capacitor(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Power Section/Board, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 5.0kW (6.2HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-10AE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDH Sigma II
Rated Output: 1.0kW (1.3HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-20DE-OY is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Control Section/Board, Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces), May Require Board Replacement
Servo Amplifier Type: SGDH Sigma II
Rated Output: 2.0kW (2.7HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: OY
Modification: None

SGDH-15AE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Magnetic Contactor, Relay, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDH Sigma II
Rated Output: 1.5kW (2.0HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-30AE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDH Sigma II
Rated Output: 3.0kW (4.0HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-20AE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Magnetic Contactor, Relay, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDH Sigma II
Rated Output: 2.0kW (2.7HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-10DE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 1.0kW (1.3HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-04AE-OY is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Gate Section/Board, Bad Power Section/Board, Excessive Dirt/Debris, No Display
Servo Amplifier Type: SGDH Sigma II
Rated Output: 0.40kW (0.54HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: OY
Modification: None

SGDH-08AE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 0.75kW (1.0HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-02AE-OY is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Gate Section/Board, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDH Sigma II
Rated Output: 0.20 (0.27HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: OY
Modification: None

SGDH-05DE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Cooling Fans, Bad DB resistor, Bad Power Section/Board, Bad Precharge Resistor, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 0.5kW
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-1AAE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Magnetic Contactor, Relay, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDH Sigma II
Rated Output: 11.0kW (15HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-01AE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Output Transistors/SCRs, Bad Power Section/Board, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 0.10kW (0.13HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-10AE-Y220 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 1.0kW (1.3HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: Y220

SGDH-1EDE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Cooling Fans, Bad Power Section/Board, Bad Precharge Resistor, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 15.0kW (20HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-08AE-S is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Control Section/Board, Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDH Sigma II
Rated Output: 0.75kW (1.0HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Single Phase (for 200V and 100V only)
Modification: None

SGDH-75DE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Fuse, Bad Gate Section/Board, Bad Power Section/Board, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 7.5kW (10HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-30DE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Fuse, Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Input Diodes/SCRs, Bad Power Section/Board, Bad Precharge Resistor, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 3.0kW (4.0HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-60DE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Power Section/Board, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDH Sigma II
Rated Output: 6.0kW (8.0HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-15DE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Control Section/Board, Bad Power Section/Board, Bad Capacitor(s), Bad Cooling Fans, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 1.5kW (2.0HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-20DE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Control Section/Board, Bad Cooling Fans, Bad Gate Section/Board, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDH Sigma II
Rated Output: 2.0kW (2.7HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-04AE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Power Section/Board
Servo Amplifier Type: SGDH Sigma II
Rated Output: 0.40kW (0.54HP)
Power Supply: 200V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-50DE is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Power Section/Board, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 5.0kW (6.2HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: Three Phase
Modification: None

SGDH-15DE-OY is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris
Servo Amplifier Type: SGDH Sigma II
Rated Output: 1.5kW (2.0HP)
Power Supply: 400V
Model: Speed, Torque, and Position Control
Options: OY
Modification: None