Yaskawa G7 Series Drives: CIMR-G7A4011

Technical Dossier

Product Details And Specifications

Yaskawa G7 Series: Comprehensive Module Range and Technical Overview

The Yaskawa G7 Series (CIMR-G7) is a high-performance, flux-vector variable frequency drive platform engineered for demanding industrial applications. Deployed extensively across global heavy industry — including petrochemical refineries, nuclear power auxiliary systems, offshore platforms, and large-scale chemical processing facilities — the G7 represents Yaskawa's flagship drive architecture for the 200V and 400V voltage classes, covering output ratings from 0.4 kW to 300 kW. Its closed-loop flux vector control capability, combined with a robust IGBT power stage and integrated EMC filtering options, made it the reference standard for high-torque, variable-speed motor control in process-critical environments throughout the 2000s and 2010s. The G7 series is now in its mature/end-of-life phase; Yaskawa has transitioned active development to the A1000 and GA700 platforms, but installed base volume ensures continued demand for G7 spare parts and long-term maintenance support.

The Evolution of G7 Architecture

The G7 series succeeded the Yaskawa G5 (CIMR-G5) platform, inheriting its closed-loop vector control topology while introducing a redesigned control board, enhanced keypad interface (JVOP-160), and expanded parameter set for process integration. Early G7 units (pre-2005) used a discrete gate driver board architecture; later revisions consolidated gate drive and protection logic onto a single PCB, improving reliability in high-vibration environments. The G7 supports both open-loop V/f and closed-loop flux vector modes, making it compatible with both standard induction motors and encoder-equipped servo-class induction motors.

Communication options evolved across the G7 lifecycle: early units relied on RS-422/RS-485 Modbus RTU via the CN5 port; later variants added optional SI-series fieldbus cards supporting PROFIBUS-DP (SI-P3), DeviceNet (SI-N3), and CANopen (SI-C3). This fieldbus card architecture is physically incompatible with the A1000 option card format, a critical consideration for system integrators planning platform migrations. The G7 control board operates on a 5V logic rail supplied by the internal SMPS; failure of the SMPS section is the most common cause of control-side faults in aged units. Replacement SMPS boards remain available through DriveKNMS for all major G7 frame sizes (2A through 2P).

G7 Full Catalog & Functionalities (SKU List)

The following SKUs represent the core G7 series product range. All models follow the CIMR-G7[Voltage Class][Frame Size][kW Code] naming convention. 400V class units carry the prefix CIMR-G7A; 200V class units carry CIMR-G7U.

400V Class — Standard Frame Units

• CIMR-G7A4001: 400V / 1.5 kW — Frame 1A, standard IP20 enclosure, open-loop V/f and closed-loop vector
• CIMR-G7A4002: 400V / 2.2 kW — Frame 1A, integrated DC bus choke provision, Modbus RTU standard
• CIMR-G7A4004: 400V / 4.0 kW — Frame 1B, enhanced braking transistor, suitable for hoist applications
• CIMR-G7A4005: 400V / 5.5 kW — Frame 1B, dual cooling fan configuration, extended ambient rating
• CIMR-G7A4007: 400V / 7.5 kW — Frame 2A, full flux vector with PG feedback option slot
• CIMR-G7A4011: 400V / 11 kW — Frame 2A, three-phase input, 25A rated output, closed-loop vector, SI card slot, standard IP20; primary SKU for this listing
• CIMR-G7A4015: 400V / 15 kW — Frame 2A, increased output current 33A, compatible with SI-P3 PROFIBUS card
• CIMR-G7A4018: 400V / 18.5 kW — Frame 2B, reinforced heat sink, rated for 50°C ambient with derating
• CIMR-G7A4022: 400V / 22 kW — Frame 2B, dual braking resistor terminals, common in crane and winding applications
• CIMR-G7A4030: 400V / 30 kW — Frame 2C, integrated EMC filter class C2, suitable for CE-marked installations
• CIMR-G7A4037: 400V / 37 kW — Frame 2C, high-cycle duty rating, used in compressor and pump control
• CIMR-G7A4045: 400V / 45 kW — Frame 2D, reinforced IGBT module, 96A output, common in HVAC central plant
• CIMR-G7A4055: 400V / 55 kW — Frame 2D, dual cooling fans, extended warranty option available
• CIMR-G7A4075: 400V / 75 kW — Frame 2E, bus bar input terminals, suitable for MCC panel integration
• CIMR-G7A4090: 400V / 90 kW — Frame 2E, 180A output, used in large pump and fan variable torque loads
• CIMR-G7A4110: 400V / 110 kW — Frame 2F, parallel IGBT configuration, high short-circuit withstand
• CIMR-G7A4132: 400V / 132 kW — Frame 2F, common in steel mill auxiliary drives and paper machine sections
• CIMR-G7A4160: 400V / 160 kW — Frame 2P, cabinet-mount format, requires external cooling duct
• CIMR-G7U2011: 200V / 11 kW — 200V class equivalent of the 4011, three-phase 200–240V input, 47A output
• CIMR-G7U2022: 200V / 22 kW — Frame 2B 200V class, common in North American 480V-step-down installations

Sourcing Hard-to-Find & Obsolete G7 Series Parts

The Yaskawa G7 series entered end-of-active-production status progressively between 2015 and 2020, with the A1000 series designated as the functional successor. However, the installed base of G7 drives in continuous process industries — where drive replacement requires full motor control system revalidation — means that demand for G7 spare units, control boards, power cards, and gate driver assemblies remains significant.

DriveKNMS maintains a dedicated inventory of G7 series units and sub-assemblies, including: complete drive units (new-old-stock and tested-used), control PCBs (ETC615823-S1010 and variants), power cards by frame size, IGBT modules (Mitsubishi CM150DY-24H and equivalents for 2D/2E frames), keypad assemblies (JVOP-160), and SI-series fieldbus option cards. All sourced units are cross-referenced against Yaskawa's internal revision history to ensure hardware compatibility with the target installation's firmware version.

For end-users operating G7 drives in safety-classified environments (SIL-rated loops, nuclear BOP systems), DriveKNMS provides full traceability documentation including test records, visual inspection reports, and where applicable, OEM calibration certificates. Inquiries for bulk quantities or long-term supply agreements are handled directly by our technical sales team.

Quality Control for the G7 Range

Each G7 unit processed by DriveKNMS undergoes a structured inspection and functional test protocol prior to dispatch. The procedure covers: incoming visual inspection (capacitor condition, bus bar integrity, PCB corrosion assessment), insulation resistance test on the power stage (500V DC Megger, minimum 5 MΩ), dynamic load test at rated output current using a resistive load bank, closed-loop vector performance verification using a calibrated induction motor and encoder simulator, and fieldbus communication test where SI option cards are fitted. Units exhibiting capacitor ESR values outside Yaskawa's published tolerance bands are recapped using equivalent-specification Nippon Chemi-Con or Nichicon components. All test data is retained for a minimum of five years and is available to customers on request.

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.