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MITSUBISHI Servo Drive
Brand: MITSUBISHI -
Cat: Servo Drive
Code:MR-S12-40A-Z33
| Combination name | Availability | Price |
|---|---|---|
AC Servo Drive – MITSUBISHI MR-S12-40A-Z33
The MR-S12-40A-Z33 is an AC servo amplifier (“AC Servo Amplifier”) manufactured by Mitsubishi Electric, belonging to the MELSERVO-S1 family, designed for high-dynamic control of AC servo motors in CNC machine tools and industrial positioning systems. The module, also identified by part number MRS1240AZ33, delivers a rated output current of 40 A to the associated servo motor. The Z33 variant designates a specific hardware revision of the module; the unit is typically paired with Mitsubishi Electric HC and HF series servo motors used on the linear and rotary axes of machines equipped with MELDAS CNC controllers.
The servo drive is the electronic core of the machine axis: it receives position and speed references from the CNC controller and regulates in real time the current delivered to the servo motor, simultaneously closing the position, speed, and current loops. A failure of the servo drive immediately halts the controlled axis, rendering the machine inoperable and potentially causing serious production downtime; its replacement or repair is therefore critical for restoring machine operation.
Mitsubishi Electric is one of the world’s leading manufacturers of industrial automation, motion control, and CNC systems. The MELSERVO-S1 family is a legacy / discontinued product line that equipped machining centres, milling machines, and CNC lathes paired with Mitsubishi MELDAS controllers for decades. Products from this family are now available exclusively as used, surplus, or through specialist repair services.
Main Technical Specifications
| Type | AC servo amplifier (AC Servo Drive) |
| Part number | MR-S12-40A-Z33 (MRS1240AZ33) |
| Brand | Mitsubishi Electric |
| Series | MELSERVO-S1 |
| Known application | CNC machine tools with MELDAS control (Mitsubishi Electric); linear and rotary axes on machining centres, milling machines, and lathes |
| Function | Position, speed, and current regulation of CNC axis AC servo motor |
| Rated output current | 40 A |
| Input voltage | 3~ 200–230 V AC, 50/60 Hz (typical) |
| Compatible motor | AC servo motors, HC / HF series (Mitsubishi Electric) |
| Interfaces / connectors | CN1 (encoder / feedback), CN2 (digital I/O), CN3 (CNC bus); power terminal strip |
| Weight | ~3–6 kg |
| Dimensions | ~150–250 mm × 60–100 mm × 200–280 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |
