Industrial Motion Control Solution – Mitsubishi R700CPU | MELSERVO-J4 MR-J4 Series
Where This Product Is Used
The Mitsubishi R700CPU servo drive is engineered for demanding industrial environments where precise, high-speed motion control is non-negotiable. Engineers and system integrators specify this unit across a wide range of applications:
- CNC Machining Centers – Delivers sub-micron positioning accuracy for multi-axis milling, turning, and grinding operations.
- Industrial Robotics – Powers articulated and SCARA robot joints requiring synchronized, high-torque servo response.
- Automated Conveyor & Sorting Systems – Enables precise speed regulation and position control in high-throughput logistics lines.
- Semiconductor & Electronics Assembly – Supports ultra-clean, vibration-free motion for pick-and-place and wafer handling equipment.
- Packaging Machinery – Coordinates multi-axis servo motion for form-fill-seal, cartoning, and palletizing lines.
- Printing & Converting Equipment – Maintains register accuracy and web tension control at high line speeds.
- Injection Molding Machines – Controls clamp, injection, and ejection axes with repeatable force and position profiles.
Technical Specifications
| Model / SKU | R700CPU |
| Series | MELSERVO-J4 / MR-J4 |
| Manufacturer | Mitsubishi Electric |
| Country of Origin | Japan |
| Drive Type | AC Servo Drive (Amplifier) |
| Control Mode | Position / Speed / Torque / Continuous Operation to Torque |
| Communication Interface | SSCNET III/H (high-speed optical network), USB |
| Encoder Compatibility | 22-bit absolute encoder (4,194,304 pulses/rev) |
| Auto-Tuning | One-touch tuning, adaptive vibration suppression |
| Safety Function | STO (Safe Torque Off) – IEC 61800-5-2 compliant |
| Ambient Temperature | 0 °C to 55 °C (operating) |
| Weight | 2.84 kg |
| Cooling Method | Natural convection / forced air (model-dependent) |
Why Engineers Specify This Model
- SSCNET III/H Optical Bus – 150 Mbps synchronous communication eliminates electrical noise interference and simplifies multi-axis wiring.
- Advanced Vibration Suppression – Dual-mode adaptive filter reduces mechanical resonance, extending machine life and improving surface finish quality.
- High-Resolution Absolute Encoder – 22-bit resolution provides exceptional positioning repeatability without homing cycles after power-up.
- Seamless iQ-R / iQ-F PLC Integration – Native compatibility with Mitsubishi MELSEC iQ-R and iQ-F controllers via Motion CPU modules.
- Functional Safety Built-In – STO function meets SIL 2 / PLd requirements without external safety relays, reducing panel footprint.
- MR Configurator2 Software – Intuitive PC-based commissioning, gain tuning, and diagnostics reduce startup time significantly.
Complete System Bill of Materials
For a fully operational MELSERVO-J4 servo axis, the following components are typically required:
- Servo Drive Amplifier: R700CPU (this unit)
- Servo Motor: MR-J4 compatible HG series (e.g., HG-KR, HG-SR, HG-JR)
- Motion Controller / PLC: Mitsubishi MELSEC iQ-R series (e.g., R32MTCPU, R16MTCPU)
- Encoder Cable: MR-J3ENCBL□M-A1-L / A2-L (length as required)
- Power Cable: MR-PWS1CBL□M-A1-L
- SSCNET III/H Optical Cable: MR-J3BUS□M
- Regenerative Brake Option: MR-RB series (application-dependent)
- EMC Filter: FR-BIF or equivalent (CE compliance)
Compliance & Industry Standards
- CE Marking (Low Voltage Directive 2014/35/EU, EMC Directive 2014/30/EU)
- UL 508C – Power Conversion Equipment
- IEC 61800-5-1 – Adjustable Speed Electrical Power Drive Systems (Safety)
- IEC 61800-5-2 – Functional Safety (STO: SIL 2 / PLd)
- RoHS Compliant
- ISO 13849-1 Category 3 Performance Level d
Quality Assurance & Sourcing
Konmask.com sources Mitsubishi Electric servo drives exclusively through authorized industrial distribution channels. Every R700CPU unit undergoes the following before dispatch:
- Visual inspection for transit damage and label authenticity verification
- Serial number traceability check against manufacturer records
- Functional power-on test where applicable
- Anti-static packaging with humidity indicator card
- Original manufacturer documentation included
We maintain a 12-month warranty on all servo drive units. Defective units are replaced or refunded per our standard returns policy.
How to Source This Part
Ready to order or need a formal quotation for your project BOM?
- Online: Add to cart directly on this page for immediate checkout.
- Bulk / Project Inquiry: Email support@konmask.com with your quantity and delivery requirements.
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Lead Time: In-stock units ship within 1–3 business days. Ex-stock orders confirmed by email.
- Export: We ship worldwide. DDP, DAP, and EXW Incoterms available on request.
Application-Specific FAQ
Q: Is the R700CPU compatible with older MR-J3 series motors?
A: No. The MR-J4 series uses a different encoder protocol. MR-J3 motors require the MR-J3 amplifier series. Mixing generations is not supported without a conversion kit.
Q: Can this drive operate in standalone mode without a Mitsubishi PLC?
A: Yes. The R700CPU supports point-to-point positioning via pulse train input (PP mode) and can be controlled by third-party controllers with compatible pulse output.
Q: What is the maximum cable length for SSCNET III/H?
A: Up to 100 m per axis using standard MR-J3BUS optical cables, with a maximum total cascade length of 3,200 m across 32 axes.
Q: Does this unit include a built-in regenerative resistor?
A: Smaller capacity MR-J4 amplifiers include a built-in regenerative resistor. For high-inertia or frequent deceleration applications, an external MR-RB regenerative brake option is recommended.
Q: Is MR Configurator2 software included?
A: MR Configurator2 is available as a free download from Mitsubishi Electric’s official software portal. A USB cable (MR-J3USBCBL3M) is required for PC connection.
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