Drives-AC Servo Yaskawa SGD SGDA | Repairs Precision Zone

Our Team Expertly Repairs Yaskawa AC Servo Drives SGD, SGDA, and SGDB Sigma 1 Series

Precision Zone specializes in Yaskawa product repairs servicing a wide range of AC Servo series such as Yaskawa SGD, SGDA, and SGDB Sigma 1 Series Servopack.

Yaskawa AC Servo Drives SGD and SGDA are primarily for 1 kW or under applications. The SGDB drives are for applications ranging from 0.2kW to 55kW.

The SGD, SGDA, and SGDB Sigma 1 Series drives can use SigmaWin Plus or a digital operator that can be plugged into the front of these drives 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 SGD, SGDA, and SGDB Sigma 1 Series servopack are displayed through a seven segment display located on the front of these drives or by using a digital operator. These codes displayed are :

Alarm Code	Code Type	Cause
A.02 and A.04	Soft Alarm	Incorrect parameters or corrupted datae
CPF00, CPF01	Control Circuit Alarm	Control circuit drive problem
A30, A40	Braking Circuitry Alarm	Regen circuitry failure of the drive
A.40, A,F1, A.F3	Power Alarm	Incoming voltage problem
10	Motor or Encoder Alarm	Overcurrent or Heat Sink Overheated
51	Motor or Encoder Alarm	Overspeed; Incorrect connections or parameters
71, 72, A.A1	Load Alarm	Too high or too low of a load
80, 81, 82, 83, 84	Encoder Alarm	Either encoder data, backup or checksum error
A.C9, A.CA, A.00	Encoder Alarm	Encoder communication, parameter, or data error

Recently Repaired Products

SGDB-10ADG is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Power Section/Board, Bad Regen Resistor/s, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: SGDB AC Servo Drive
Rated Output: 1.0kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: None

SGDB-05ADG is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: May Require Board Replacement, Bad Capacitor(s), Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: SGDB AC Servo Drive
Rated Output: 0.5kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: None

SGDB-44ADD-Y8 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)
Drive Type: SGDB AC Servo Drive
Rated Output: 4.4kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMD
Option Specifications: None
Modification: Y8

SGDB-75ADG is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: SGDB AC Servo Drive
Rated Output: 7.5kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: None

SGDB-20ADG-P is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Fuse
Drive Type: SGDB AC Servo Drive
Rated Output: 2.0kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: Duct Ventilation Type
Modification: None

SGDB-44ADG-Y8 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 Power Section/Board, Excessive Dirt/Debris
Drive Type: SGDB AC Servo Drive
Rated Output: 4.4kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: Y8

SGDB-44ADG 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, Excessive Dirt/Debris
Drive Type: SGDB AC Servo Drive
Rated Output: 4.4kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: None

SGDB-20ADG is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Gate Section/Board, Bad Output Transistors/SCRs
Drive Type: SGDB AC Servo Drive
Rated Output: 2.0kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: None

SGDB-15ADG-Y8 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Magnetic Contactor, Relay, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: SGDB AC Servo Drive
Rated Output: 1.5kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: Y8

SGDB-30ADG is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Gate Section/Board
Drive Type: SGDB AC Servo Drive
Rated Output: 3.0kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: None

SGDB-15VN is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: SGDB AC Servo Drive
Rated Output: 1.5kW
Supply Voltage: 200V Optional CE (European Certification)
Model: Mechatrolink
Applicable motor series: SGMG
Option Specification: None
Modification: None

SGDB-1AADG is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Magnetic Contactor, Relay, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: SGDB AC Servo Drive
Rated Output: 11.0kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: None

SGDB-1EADG-P-Y370 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces), Physical Damage to the Drive
Drive Type: SGDB AC Servo Drive
Rated Output: 15.0kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: Duct Ventilation Type
Modification: Y370

SGDB-15ADG is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Magnetic Contactor, Relay, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: SGDB AC Servo Drive
Rated Output: 1.5kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: None

SGDA-01AS is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Gate Section/Board, Bad Power Section/Board, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDA
Rated Output: 100W (0.13HP)
Supply Voltage: 200V
Model: Speed/Torque Control (Analog Input)
Factory setting of applicable motor type: SGM Servomotor (blank)
Modification type: None

SGDA-02VS is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Magnetic Contactor, Relay, Bad Power Section/Board, Leaky Capacitors (Open, Corroded Traces)
Servo Amplifier Type: SGDA
Rated Output: 200W (0.27HP)
Supply Voltage: 200V Optional CE
Model: Speed/Torque Control (Analog Input)
Factory setting of applicable motor type: SGM Servomotor (blank)
Modification type: None

SGDA-01VS is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Magnetic Contactor, Relay, Bad Power Section/Board
Servo Amplifier Type: SGDA
Rated Output: 100W (0.13HP)
Supply Voltage: 200V Optional CE
Model: Speed/Torque Control (Analog Input)
Factory setting of applicable motor type: SGM Servomotor (blank)
Modification type: None

SGDB-15ADP is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Power Section/Board
Drive Type: SGDB AC Servo Drive
Rated Output: 1.5kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMP
Option Specifications: None
Modification: None

SGDB-15VD 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, Blown Input Power Components, Excessive Dirt/Debris, May Require Board Replacement, No Display
Drive Type: SGDB AC Servo Drive
Rated Output: 1.5kW
Supply Voltage: 200V Optional CE (European Certification)
Model: Torque, Speed, Position Control
Applicable motor series: SGM
Option Specifications: None
Modification: None

SGDB-1EADG is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Excessive Dirt/Debris, Bad Circuit Board Component(s), Bad Gate Section/Board, Bad Output Transistors/SCRs, Bad Power Section/Board
Drive Type: SGDB AC Servo Drive
Rated Output: 15.0kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: None

SGDB-20VD-Y104 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad DC Bus Capacitors, Bad Fuse, Bad Gate Section/Board, Bad Magnetic Contactor, Relay, Bad Output Transistors/SCRs, Bad Power Section/Board, Excessive Dirt/Debris, Physical Damage to the Drive
Drive Type: SGDB AC Servo Drive
Rated Output: 2.0kW
Supply Voltage: 200V Optional CE (European Certification)
Model: Torque, Speed, Position Control
Applicable motor series: SGM
Option Specifications: None
Modification: Y104

SGDB-05VD-Y1 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, Leaky Capacitors (Open, Corroded Traces), No Display
Drive Type: SGDB AC Servo Drive
Rated Output: 0.5kW
Supply Voltage: 200V Optional CE (European Certification)
Model: Torque, Speed, Position Control
Applicable motor series: SGM
Option Specifications: None
Modification: Y1

SGDB-15VD-Y1 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans
Drive Type: SGDB AC Servo Drive
Rated Output: 1.5kW
Supply Voltage: 200V Optional CE (European Certification)
Model: Torque, Speed, Position Control
Applicable motor series: SGM
Option Specifications: None
Modification: Y1

SGDB-15ADG-Y1 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Excessive Dirt/Debris
Drive Type: SGDB AC Servo Drive
Rated Output: 1.5kW
Supply Voltage: 200V
Model: Torque, Speed, Position Control
Applicable motor series: SGMG (1500 RPM)
Option Specifications: None
Modification: Y1