YASKAWA SGDM Series - User Manual

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Questions and Answers

B
Brendan ThompsonAug 7, 2025
What to do if YASKAWA SGDM show a dividing ratio setting error?
- J
  johngarciaAug 7, 2025
  If your YASKAWA Servo Drives are showing a dividing ratio setting error, it could be due to an incorrect setting of the dividing ratio (Pn212). This setting might be unacceptable or exceed the value for the connected encoder resolution. To resolve this, correct the setting of Pn212, then turn the control power OFF and then ON again. Alternatively, the error could be caused by a fault in the SERVOPACK EEPROM or the related circuit, in which case, you should replace the SERVOPACK.
A
Andrew LevyAug 21, 2025
Why YASKAWA SGDM display 'Encoder Model Unmatched' error?
- B
  Brittney HarrisonAug 21, 2025
  If your YASKAWA Servo Drives display an 'Encoder Model Unmatched' error, it could be because the connected serial encoder is not supported by the SGDM SERVOPACK. The suggested solution is to replace the servomotor with an SGDM SERVOPACK supported model. Another potential cause is a SERVOPACK board fault, which would require replacing the SERVOPACK.

Summary

1 Outline

1.1 Checking Products

Describes items to check when Σ-II Series products are delivered.

1.2 Product Part Names

Illustrates the part names for SGMAH/SGMPH, SGMGH/SGMSH/SGMDH, and SGMCS servomotors.

1.3 Examples of Servo System Configurations

Provides wiring diagrams for single-phase and three-phase servo systems.

1.4 Applicable Standards

Lists applicable safety standards (UL, CSA, CE) for SERVOPACKs and servomotors.

1.5 Σ-II Series SGDM SERVOPACK Upgraded Functions

Lists added and improved functions in upgraded software versions for SGDM SERVOPACKs.

2 Selections

2.1 Servomotor Model Designations

Explains the model designation codes for SGMAH, SGMPH, SGMGH, SGMSH, SGMDH, and SGMCS servomotors.

2.2 Selecting Servomotors

Describes the CD-ROM tool and examples for selecting AC servomotor capacity.

2.3 SERVOPACK Model Designations

Explains the model designation codes for SGDM SERVOPACKs.

2.4 Σ-II Series SERVOPACKs and Applicable Servomotors

Lists applicable SERVOPACKs for SGMH and SGMCS servomotors.

2.5 Selecting Cables

Details specifications and drawings for servomotor main circuit and encoder cables.

2.6 Selecting Peripheral Devices

Lists peripheral devices such as noise filters, circuit breakers, and regenerative resistors.

YASKAWA SGDM Series Specifications

General

Type	Servo Drive
Series	SGDM
Category	Servo Drives
Communication	MECHATROLINK-II, MECHATROLINK-III, EtherCAT
Communication Interface	RS-485
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overload, Overtemperature
Operating Temperature	55°C
Storage Temperature	-20°C
Vibration Resistance	5.9 m/s² (0.6G)
Certifications	UL, CE