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Dual-Axis Servo Amplifier – MITSUBISHI MDS-B-V2-3535
The MDS-B-V2-3535 is a dual-axis AC servo amplifier (“Dual-Axis Servo Amplifier”) from the MDS-B family by Mitsubishi Electric, designed to drive two servo motor axes independently and simultaneously. The designation V2 identifies the dual-channel variant, while 3535 indicates a rated continuous current of 35 A per axis. The drive integrates into Mitsubishi CNC systems (M60, M64, M65, M70, M700 series) via the high-speed fibre-optic serial bus SSCNET (Serial Servo Communication NETwork), providing high-bandwidth communication and immunity to the electromagnetic interference typical of the machine tool environment.
The servo amplifier is the component that converts position, speed and torque references generated by the CNC into current delivered to the axis motors, closing the position, speed and current loops in real time. A failure of the MDS-B-V2-3535 immediately disables control of one or both managed axes: the machine raises an alarm and cannot continue machining, with consequent risk of scrapping the workpiece in progress and prolonged production downtime.
Mitsubishi Electric is one of the main divisions of the Mitsubishi group, active in industrial automation, CNC systems and drives for over fifty years. The FA (Factory Automation) division produces integrated systems — CNCs, amplifiers and servo motors — widely regarded as a benchmark for reliability and high-speed performance. The MDS-B family in its older variants is to be considered legacy / discontinued: spare part availability is primarily ensured through the used market, reconditioning programmes and specialist repair services.
Main Technical Specifications
| Type | Dual-axis AC servo amplifier (Dual-Axis Servo Amplifier) |
| Part number | MDS-B-V2-3535 (MDSBV23535) |
| Brand | Mitsubishi Electric |
| Known application | Mitsubishi CNC systems M60, M64, M65, M70, M700 series |
| Function | AC servo motor axis control (position, speed, torque) |
| Number of axes | 2 (dual-axis) |
| Rated current per axis | 35 A (continuous) |
| Supply voltage | 3-phase 200–230 V AC, 50/60 Hz (typical) |
| CNC communication | SSCNET — Serial Servo Communication NETwork (fibre optic) |
| Interfaces / connectors | SSCNET fibre optic connectors, power terminals, encoder and axis brake connectors |
| Weight | ~3–6 kg |
| Dimensions | ~150–200 mm (W) × 300–400 mm (H) × 200–280 mm (D) |
| Production status | Legacy / discontinued — used/surplus/repair only |