Mitsubishi MR3-VD34-070202A Servo Amplifier | High-Performance Motion Control | MR3 Series Platform
Engineering Background
The MR3-VD34-070202A is a precision servo amplifier engineered by Mitsubishi Electric under the MR3 platform — a next-generation motion control architecture designed for demanding industrial environments. Built to replace legacy MR-J series units in high-cycle, high-accuracy applications, this amplifier delivers deterministic torque and velocity response critical to modern automated production lines.
Product Positioning
Targeted at procurement engineers and system integrators sourcing OEM-grade servo drives for CNC machining centers, robotic assembly cells, semiconductor handling equipment, and precision packaging lines. The MR3-VD34-070202A is a direct-fit solution for Mitsubishi MELSERVO MR3 servo system architectures, ensuring full compatibility with Mitsubishi MELSEC PLC controllers and GOT HMI platforms.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | MR3-VD34-070202A |
| Series / Platform | Mitsubishi MELSERVO MR3 |
| Unit Type | Servo Amplifier (Drive) |
| Manufacturer | Mitsubishi Electric Corporation |
| Country of Origin | Japan |
| Control Mode | Position / Speed / Torque (PST) |
| Communication Interface | SSCNETIII/H (High-speed optical network) |
| Encoder Compatibility | 22-bit absolute encoder (MR3 servo motor series) |
| Rated Output | Refer to nameplate / datasheet for axis-specific rating |
| Input Power Supply | 3-phase / single-phase AC (model-dependent) |
| Protective Functions | Overcurrent, overvoltage, undervoltage, overheat, encoder error |
| Ambient Temperature | 0°C to +55°C (operating); -20°C to +65°C (storage) |
| Humidity | 5% to 90% RH (non-condensing) |
| Vibration Resistance | 5.9 m/s² (0.6G), 10–55 Hz |
| Approx. Weight | ~1.2 kg |
| Compliance | CE, UL, RoHS |
Proven Application Environments
- CNC Machining Centers — Axis interpolation and spindle orientation with sub-micron repeatability
- Robotic Assembly & Welding Cells — Multi-axis coordinated motion via SSCNETIII/H optical bus
- Semiconductor & FPD Manufacturing — Ultra-low vibration, high-speed positioning for wafer handling
- Precision Packaging Lines — High-cycle pick-and-place with torque ripple suppression
- Injection Molding Machines — Closed-loop pressure and velocity control for consistent shot weight
- Automated Warehousing / AGV — Smooth acceleration profiles for load-sensitive transport
Engineering Advantages
- SSCNETIII/H Optical Communication — 150 Mbps noise-immune fiber bus eliminates wiring interference in high-EMI environments
- 22-Bit Absolute Encoder Support — 4,194,304 pulses/rev resolution; no homing required after power cycle
- Advanced Vibration Suppression — Adaptive notch filter and machine resonance suppression for long-arm or low-rigidity mechanisms
- One-Touch Tuning — Auto-gain tuning reduces commissioning time from hours to minutes
- Functional Safety Ready — STO (Safe Torque Off) function supports IEC 62061 / ISO 13849 safety architectures
- Compact DIN-Rail Form Factor — Space-efficient panel design for high-density control cabinets
System Architecture & Signal Flow
The MR3-VD34-070202A integrates into Mitsubishi’s iQ-R / iQ-F PLC platform via the SSCNETIII/H motion network. The controller (e.g., RD77MS motion module) issues position commands over the optical bus at 0.888 ms cycle time. The amplifier closes the position, velocity, and current loops internally, feeding back 22-bit encoder data to the controller for real-time trajectory correction. Regenerative energy is handled by the built-in regenerative resistor circuit, with provision for external resistor connection on higher-inertia loads.
[ iQ-R PLC + RD77MS ] ──SSCNETIII/H──> [ MR3-VD34-070202A ] ──> [ MR3 Servo Motor ]
│
22-bit Encoder Feedback
Sourcing & Quality Verification
- OEM Authenticity — All units sourced from authorized Mitsubishi Electric distribution channels or verified surplus with full traceability documentation
- Pre-shipment Inspection — Visual inspection, label verification, and functional power-on test performed before dispatch
- Packaging — Anti-static ESD bag + foam-lined carton; conforms to IEC 61340-5-1 handling standards
- Warranty — 12-month replacement warranty against manufacturing defects
- Counterfeit Prevention — Serial number and date code verified against Mitsubishi Electric product authentication guidelines
Procurement Process
- Submit RFQ — Contact [email protected] with your project BOM or required quantity
- Quotation & Lead Time — Response within 24 business hours with pricing, availability, and estimated delivery
- Order Confirmation — Purchase order accepted via email; proforma invoice issued for payment processing
- Quality Check & Dispatch — Pre-shipment inspection completed; tracking number provided within 1–2 business days
- After-Sales Support — Technical assistance available for installation, parameter setup, and troubleshooting
Technical FAQ
Q: Is the MR3-VD34-070202A compatible with MR-J4 servo motors?
A: No. The MR3 series uses a dedicated 22-bit encoder interface. MR-J4 motors with 18-bit encoders are not directly compatible. Please verify motor model before ordering.
Q: Can this amplifier operate in standalone (non-network) mode?
A: The MR3 series is primarily designed for SSCNETIII/H network operation. Standalone pulse-train input mode availability depends on the specific sub-variant — confirm with our technical team.
Q: What PLC/motion controller is required?
A: Compatible with Mitsubishi iQ-R series (RD77MS) and iQ-F series (FX5-SSC-S) motion modules. Third-party controllers are not supported on the SSCNETIII/H bus.
Q: Do you provide parameter backup files or commissioning support?
A: Yes. We can provide MR Configurator2 parameter templates and remote commissioning guidance for qualified engineers.
Q: What is the minimum order quantity (MOQ)?
A: MOQ is 1 unit. Volume pricing is available for orders of 5 units or more.
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