Panasonic MINAS A4 Series AC Servo Motors: MT-9-5.4-002LB MQMA022P2B 0150-76217 0100-01907 0100-20458

Technical Dossier

Product Details And Specifications

Panasonic MINAS A4 Series: Comprehensive Module Range and Technical Overview

The Panasonic MINAS A4 series is a full-range AC servo system deployed across global heavy industry sectors including petrochemical plants, nuclear facility auxiliary systems, oil refineries, steel rolling mills, and precision semiconductor fabrication lines. The MINAS A4 platform — encompassing servo motors (MQMA, MDMA, MGMA, MHMA, MSMA prefixes) and matched MCDDT/MADDT/MBDDT driver units — represents one of the most widely installed servo architectures in Asia-Pacific and European process automation infrastructure. Its combination of 2,500 ppr incremental encoder feedback, auto-gain tuning, and real-time vibration suppression made it the reference standard for mid-inertia load control from its introduction through the 2010s. The subject unit, MT-9-5.4-002LB MQMA022P2B 0150-76217 0100-01907 0100-20458, is a 200W, 3,000 rpm rated motor from the MQMA (small-capacity, low-inertia) sub-family, designed for high-cycle indexing and positioning applications.

The Evolution of MINAS A4 Architecture

Panasonic's MINAS servo lineage progressed through distinct generations: MINAS A (early 1990s, analog command, resolver feedback) → MINAS A2 (mid-1990s, 2,500 ppr incremental encoder, RS-232 parameter interface) → MINAS A3 (early 2000s, enhanced auto-tuning, expanded wattage range to 5kW) → MINAS A4 (2004–2014, 17-bit absolute encoder option, RTEX high-speed serial bus, vibration suppression filter, full closed-loop support) → MINAS A5 (2010–present, 20-bit absolute encoder, EtherCAT/MECHATROLINK-III, safety STO function) → MINAS A6 (2017–present, 23-bit encoder, functional safety IEC 61800-5-2 compliance).

The MINAS A4 series entered its end-of-active-production phase circa 2015. Panasonic officially recommends migration to MINAS A5/A6 for new designs. However, the installed base of A4 motors and drives in operational plants remains substantial. Backward compatibility between A4 motors and A5 drives is achievable in most configurations via parameter adjustment, but connector pinouts and encoder cable specifications differ and must be verified per application. For facilities maintaining A4-based machine lines, direct replacement with identical A4 units remains the lowest-risk maintenance strategy.

MINAS A4 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models within the Panasonic MINAS A4 ecosystem, classified by functional sub-family:

MQMA Sub-Family — Small Capacity, Low Inertia (50W–750W)

• MQMA022P2B: 200W, 3,000 rpm, 200VAC, 2,500 ppr incremental encoder, key + oil seal, standard shaft
• MQMA022P1B: 200W, 3,000 rpm, 100VAC input variant, incremental encoder, no brake
• MQMA042P2B: 400W, 3,000 rpm, 200VAC, incremental encoder, standard flange 60mm
• MQMA042P1B: 400W, 3,000 rpm, 100VAC, incremental encoder, no brake
• MQMA082P2B: 750W, 3,000 rpm, 200VAC, incremental encoder, 80mm flange

MSMA Sub-Family — Medium Capacity, Standard Inertia (1kW–5kW)

• MSMA012P2A: 1kW, 3,000 rpm, 200VAC, incremental encoder, no brake, standard shaft
• MSMA022P2A: 2kW, 3,000 rpm, 200VAC, incremental encoder, standard flange 100mm
• MSMA042P2A: 4kW, 3,000 rpm, 200VAC, incremental encoder, 130mm flange
• MSMA082P2A: 7.5kW, 2,000 rpm, 200VAC, incremental encoder, heavy-duty shaft
• MSMA152P2A: 15kW, 1,500 rpm, 200VAC, incremental encoder, large-frame motor

MDMA Sub-Family — Medium-High Capacity, Medium Inertia (1kW–5kW)

• MDMA012P1A: 1kW, 3,000 rpm, 100VAC, incremental encoder, compact body
• MDMA022P2A: 2kW, 3,000 rpm, 200VAC, incremental encoder, 100mm flange
• MDMA042P2A: 4kW, 3,000 rpm, 200VAC, incremental encoder, 130mm flange

MHMA Sub-Family — High Inertia, Low Speed (1kW–5kW)

• MHMA012P1A: 1kW, 1,000 rpm, 200VAC, high-inertia rotor, suited for large-load positioning
• MHMA022P2A: 2kW, 1,000 rpm, 200VAC, high-inertia, 130mm flange, heavy mechanical load

Matched MINAS A4 Driver Units

• MCDDT3520: 200W–750W matched driver, single-phase 200VAC, RS-232/485 interface
• MADDT1207: 1kW matched driver, 200VAC three-phase, RTEX bus option
• MBDDT2210: 2kW matched driver, 200VAC three-phase, full closed-loop capable

Sourcing Hard-to-Find & Obsolete MINAS A4 Parts

DriveKNMS maintains a dedicated inventory program for Panasonic MINAS A4 series components that have reached end-of-production status. For facilities operating continuous-process equipment — where an unplanned servo failure results in line stoppage costs that far exceed the component value — maintaining access to verified replacement stock is a critical operational requirement.

DriveKNMS sources MINAS A4 motors and drives through authorized surplus channels, factory-decommissioned equipment, and controlled refurbishment pipelines. All units are catalogued by full part number including suffix codes (which encode encoder type, brake configuration, shaft specification, and voltage rating). Partial SKU inquiries are accepted; DriveKNMS technical staff will cross-reference suffix tables to identify the correct replacement. For the specific unit MQMA022P2B (MT-9-5.4-002LB), stock availability is maintained on a rolling basis. Customers requiring long-term supply agreements for multi-unit plant maintenance programs are accommodated with reserved allocation arrangements.

Quality Control for the MINAS A4 Range

MINAS A4 motors and drives present specific test requirements due to their encoder interface architecture and backplane communication protocols. DriveKNMS applies the following verification procedures to all A4 series units prior to dispatch:

• Encoder signal integrity test: A/B/Z phase output verification at rated speed using oscilloscope capture; comparison against factory specification waveform tolerances.
• Insulation resistance measurement: Winding-to-frame IR test at 500VDC; minimum acceptance threshold 100MΩ per IEC 60034-1.
• No-load run test: Motor operated at 3,000 rpm for minimum 30 minutes; vibration, temperature rise, and current draw logged against nameplate data.
• Driver parameter upload and axis commissioning: For driver units, factory default parameters are loaded, motor constants entered, and auto-gain sequence executed to confirm closed-loop stability.
• Connector and cable inspection: All encoder and power connectors inspected for pin corrosion, bent contacts, and locking mechanism integrity — a common failure point in field-returned A4 units.

Each unit ships with a DriveKNMS inspection record documenting test date, technician ID, measured values, and pass/fail determination.