YASKAWA SGM7G Series Modules: SGM7G-30APK-YR11 SGDR-SDA140A01B HW0270541-C-T

Technical Dossier

Product Details And Specifications

YASKAWA SGM7G Series: Comprehensive Module Range and Technical Overview

The YASKAWA SGM7G series belongs to the Sigma-7 (Σ-7) servo motor platform, one of the most widely deployed servo drive ecosystems in global heavy industry. SGM7G-frame motors are medium-to-large capacity units rated from 300 W to 15 kW, engineered for high-inertia load applications including chemical plant actuators, refinery valve positioners, nuclear facility handling systems, and steel mill rolling line drives. The Sigma-7 platform holds a dominant installed base across Asia-Pacific, Europe, and North America, with lifecycle commitments extending well beyond 2030 for most sub-series. The SGM7G designation specifically identifies the large-capacity, flange-mount variant within the Sigma-7 motor family, paired with SGDR and SGDV/SGDH series servo drives and regenerative units.

The Evolution of SGM7G Architecture

YASKAWA's servo motor lineage relevant to the SGM7G traces through four generations. The Sigma-I (SGMG) and Sigma-II (SGMGH) series established the large-frame form factor and 17-bit encoder baseline. Sigma-III (SGMGV) introduced full closed-loop absolute encoders and EtherCAT readiness. The Sigma-5 (SGM7G predecessor: SGMGV) refined vibration suppression algorithms. The current Sigma-7 (SGM7G) generation, released circa 2014–2016, introduced 24-bit absolute encoders (16,777,216 pulses/rev), integrated safety functions (STO/SS1 per IEC 61800-5-2), and dual-port EtherCAT with MECHATROLINK-III support. Backward mechanical compatibility with Sigma-5 mounting dimensions is maintained for most frame sizes, but encoder and drive firmware are not interchangeable across generations. The SGDR-SDA series regenerative units (including SGDR-SDA140A01B referenced in this listing) are dedicated regenerative resistor assemblies used with high-duty-cycle SGM7G applications to dissipate braking energy in continuous deceleration cycles. HW0270541-C-T is a YASKAWA internal hardware revision identifier associated with specific PCB or assembly configurations within the SGDR-SDA140A01B unit.

SGM7G Full Catalog & Functionalities (SKU List)

Servo Motors — SGM7G Frame (Large Capacity)

• SGM7G-30APK-YR11: 3.0 kW, 200 V AC, absolute encoder, key + oil seal, standard shaft
• SGM7G-09APK-YR11: 900 W, 200 V AC, absolute encoder, flange mount, oil seal
• SGM7G-13APK-YR11: 1.3 kW, 200 V AC, absolute encoder, standard flange, oil seal
• SGM7G-20APK-YR11: 2.0 kW, 200 V AC, absolute encoder, key + oil seal
• SGM7G-44APK-YR11: 4.4 kW, 200 V AC, absolute encoder, key + oil seal
• SGM7G-55APK-YR11: 5.5 kW, 200 V AC, absolute encoder, key + oil seal
• SGM7G-75APK-YR11: 7.5 kW, 200 V AC, absolute encoder, key + oil seal
• SGM7G-1AAPK-YR11: 11 kW, 200 V AC, absolute encoder, large frame, key + oil seal
• SGM7G-1EAPK-YR11: 15 kW, 200 V AC, absolute encoder, large frame, key + oil seal
• SGM7G-30AFK-YR11: 3.0 kW, 200 V AC, incremental encoder, key + oil seal variant
• SGM7G-30APK-YR21: 3.0 kW, 400 V AC, absolute encoder, key + oil seal, high-voltage variant
• SGM7G-44APK-YR21: 4.4 kW, 400 V AC, absolute encoder, key + oil seal
• SGM7G-75APK-YR21: 7.5 kW, 400 V AC, absolute encoder, key + oil seal

Regenerative Units — SGDR-SDA Series

• SGDR-SDA140A01B: Regenerative resistor unit, 140 Ω, for SGM7G high-duty deceleration cycles, HW0270541-C-T revision
• SGDR-SDA560A01B: Regenerative resistor unit, 560 Ω, lower-capacity drive pairing
• SGDR-AXA01A: AC reactor unit for harmonic suppression, SGM7G drive input side

Matched Servo Drives — SGDV / SGDH Series (SGM7G Compatible)

• SGDV-2R8A01A: 200 V, 0.5 A continuous, MECHATROLINK-II, for SGM7G-09 pairing
• SGDV-5R5A01A: 200 V, 5.5 A, MECHATROLINK-II, SGM7G-13/20 pairing
• SGDV-120A01A: 200 V, 12.0 A, MECHATROLINK-II, SGM7G-30 pairing
• SGDV-200A01A: 200 V, 20.0 A, MECHATROLINK-II, SGM7G-44 pairing
• SGDV-330A01A: 200 V, 33.0 A, MECHATROLINK-II, SGM7G-75 pairing

Sourcing Hard-to-Find & Obsolete SGM7G Parts

The SGM7G series is in its mature phase. While YASKAWA continues to manufacture current-revision units, earlier hardware revisions (including specific HW02xxxxx PCB assemblies) and matched SGDR regenerative units are increasingly sourced through the secondary market as production batches rotate. DriveKNMS maintains a dedicated inventory of SGM7G motors, SGDR-SDA regenerative resistor assemblies, and associated drive hardware. For end-users operating continuous-process facilities (refineries, chemical plants, paper mills) where unplanned downtime is not acceptable, DriveKNMS provides: verified pull-out units from decommissioned machinery, reconditioned motors with encoder battery replacement and bearing inspection, cross-reference matching for obsolete HW revision codes to current equivalents, and emergency same-day quotation for critical spares. All units are catalogued by frame size, voltage class, encoder type, and hardware revision to ensure exact-match sourcing.

Quality Control for the SGM7G Range

SGM7G motors and SGDR regenerative units undergo a structured inspection protocol at DriveKNMS prior to dispatch. Motor units are tested for encoder signal integrity (24-bit absolute output verification), winding insulation resistance (Megger test, minimum 100 MΩ at 500 V DC), bearing noise and runout (vibration analysis per ISO 10816), and brake release/hold torque (where applicable). SGDR-SDA regenerative resistor assemblies are tested for resistance value accuracy (±5% of rated Ω), thermal fuse continuity, and PCB connector integrity. Drive-motor pairing compatibility is verified against YASKAWA's official capacity selection tables. Units that fail any parameter are quarantined and not offered for sale. Test records are available upon request for critical infrastructure procurement.