The products may undergo changes or may not correspond to you.
AC Servo Amplifier – MITSUBISHI MR-S11-200-E01
The MR-S11-200-E01 is an AC servo amplifier (“AC Servo Amplifier”) from the MELSERVO MR-S11 series by Mitsubishi Electric, documented for use with MELDAS CNC systems (Mitsubishi Electric CNC). The suffix 200 denotes the nominal power class of 200 W, while E01 identifies the variant or firmware / motor parameter revision. The unit manages the speed and position loops of the servo axis, receiving analogue or pulse-train references from the CNC controller and driving HC series brushless servo motors by Mitsubishi. Variants may exist with different encoder interfaces or alternative current profiles.
The servo amplifier is the component that converts the position and speed reference issued by the CNC into modulated three-phase current for the motor: it controls speed, acceleration and torque of the work axis in real time. In the event of failure, the controlled axis loses precise motion entirely, making any machining operation impossible; the CNC raises position or following-error alarms and halts the machine in a protective state.
Mitsubishi Electric is one of the world’s leading manufacturers of industrial automation, with its Factory Automation (FA) division specialising in CNC controllers (MELDAS, M70, M80 series), servo drives (MELSERVO), inverters and PLCs (MELSEC). Products of the MR-S11 series are legacy / discontinued, superseded by the later generations MR-J2S, MR-J3, MR-J4 and MR-J5: available as used, surplus or through specialist repair only.
Main Technical Specifications
| Type | AC Servo Amplifier |
| Part number | MR-S11-200-E01 (MRS11200E01) |
| Brand | Mitsubishi Electric – MELSERVO division |
| Known application | Mitsubishi MELDAS CNC systems; machine tools with HC series brushless servo axes |
| Function | Servo axis control: speed, position and torque regulation of brushless motor |
| Rated power | 200 W |
| Power supply | Three-phase 200–230 V AC, 50/60 Hz (typical MR-S11 series) |
| Command interface | Analogue reference (±10 V) or pulse train; digital I/O signals |
| Compatible motor | Mitsubishi HC series brushless servo motors (e.g. HC-MF, HC-SF) – 200 W |
| Feedback | Incremental serial encoder (Mitsubishi proprietary interface) |
| Weight | ~0.8–1.5 kg |
| Dimensions | ~130–180 mm × 60–80 mm × 130–160 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |