Optimizing dynamic positioning trajectories in automated systems, the Mitsubishi Electric MR-J4-70A operates as a 1-axis servo amplifier within the MELSERVO-J4 product range. Engineered for 200V class systems, this drive outputs a continuous rated current of 5.8 A to drive 0.75 kW rotary servo motors with deterministic execution. By executing sinusoidal wave PWM control alongside 22-bit high-resolution feedback systems, the module maintains micro-precision tracking loop speeds. The hardware is equipped with built-in Safe Torque Off (STO) safety networks certified to SIL 3 / PL e, providing physical energy cut-offs to prevent unauthorized motor restarts during maintenance windows.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Code | MR-J4-70A |
| Series Name | MELSERVO-J4 Series |
| Main Circuit Power Input | Three-phase or single-phase AC 200 V to 240 V, 50/60 Hz |
| Allowable Voltage Fluctuation | AC 170 V to 264 V |
| Motor Rated Output | 0.75 kW |
| Rated Output Current | 5.8 A |
| Control Method | Sinusoidal wave PWM control and current control system |
| Feedback Resolution | 22-bit (4,194,304 pulses/rev) |
| Built-in Regenerative Resistor | 20 W |
| Safety Certification | EN ISO 13849-1 Category 3 PL e, IEC 61508 SIL 3, EN 62061 SIL CL 3 |
| Ingress Protection Rating | IP20 (open structure) |
| Operating Temperature Range | 0 to 55 degC (non-freezing) |
| Vibration Resistance | 5.9 m/s2, 10 Hz to 55 Hz (X, Y, Z directions) |
| Net Unit Weight | 1.4 kg |
| Shipping Weight (Calculated) | 3.5 kg |
| Connector Port | Function / Signal Assignment |
|---|---|
| CN1 | Analog command interface / General-Purpose I/O signals |
| CN2 | Encoder feedback connection (high-speed serial interface) |
| CN3 | RS-422 / RS-485 serial communication port |
| CN5 | USB port for PC setup software (MR Configurator2) |
| CN8 | Safe Torque Off (STO) input / Safety signal connection |
The MR-J4-70A includes integrated MR-J3 compatibility parameters, allowing direct electrical substitution of older MR-J3-70A units in most positioning setups. However, when retrofitting legacy panels, note that the physical footprint and mounting hole locations differ slightly; always verify sheet metal mounting templates prior to structural installation.
While equipped with a built-in 20W regenerative resistor, high-duty-cycle vertical axis applications or large inertial loads can trigger "AL 30" (Regenerative Error) codes. To prevent operational shutdowns, calculate the cumulative kinetic energy feedback and consider wiring an external heavy-duty regenerative resistor across the P+ and C terminals, while updating parameter Pr. PA02 to indicate external power dispersion.
Ensure the CN8 safety jumper plug is inserted if the Safe Torque Off (STO) function is not wired to an external safety relay. Removing the plug or leaving the STO circuit open will generate an "AL 9F" (Safety Stop) system inhibit, preventing motor excitation. Always isolate control-signal cables (CN1/CN2) from the motor power line (U/V/W) by at least 30 cm to eliminate parasitic electromagnetic interference.
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Returns & Warranty
Manufacturer: Mitsubishi Electric
Product No.: MR-J4-70A
Country of origin:United States
Product Type: Servo Drive Modules
Payment: T/T, Western Union
Weight: 1400g
Shipping port: Xiamen
Warranty: 12 months
Optimizing dynamic positioning trajectories in automated systems, the Mitsubishi Electric MR-J4-70A operates as a 1-axis servo amplifier within the MELSERVO-J4 product range. Engineered for 200V class systems, this drive outputs a continuous rated current of 5.8 A to drive 0.75 kW rotary servo motors with deterministic execution. By executing sinusoidal wave PWM control alongside 22-bit high-resolution feedback systems, the module maintains micro-precision tracking loop speeds. The hardware is equipped with built-in Safe Torque Off (STO) safety networks certified to SIL 3 / PL e, providing physical energy cut-offs to prevent unauthorized motor restarts during maintenance windows.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Code | MR-J4-70A |
| Series Name | MELSERVO-J4 Series |
| Main Circuit Power Input | Three-phase or single-phase AC 200 V to 240 V, 50/60 Hz |
| Allowable Voltage Fluctuation | AC 170 V to 264 V |
| Motor Rated Output | 0.75 kW |
| Rated Output Current | 5.8 A |
| Control Method | Sinusoidal wave PWM control and current control system |
| Feedback Resolution | 22-bit (4,194,304 pulses/rev) |
| Built-in Regenerative Resistor | 20 W |
| Safety Certification | EN ISO 13849-1 Category 3 PL e, IEC 61508 SIL 3, EN 62061 SIL CL 3 |
| Ingress Protection Rating | IP20 (open structure) |
| Operating Temperature Range | 0 to 55 degC (non-freezing) |
| Vibration Resistance | 5.9 m/s2, 10 Hz to 55 Hz (X, Y, Z directions) |
| Net Unit Weight | 1.4 kg |
| Shipping Weight (Calculated) | 3.5 kg |
| Connector Port | Function / Signal Assignment |
|---|---|
| CN1 | Analog command interface / General-Purpose I/O signals |
| CN2 | Encoder feedback connection (high-speed serial interface) |
| CN3 | RS-422 / RS-485 serial communication port |
| CN5 | USB port for PC setup software (MR Configurator2) |
| CN8 | Safe Torque Off (STO) input / Safety signal connection |
The MR-J4-70A includes integrated MR-J3 compatibility parameters, allowing direct electrical substitution of older MR-J3-70A units in most positioning setups. However, when retrofitting legacy panels, note that the physical footprint and mounting hole locations differ slightly; always verify sheet metal mounting templates prior to structural installation.
While equipped with a built-in 20W regenerative resistor, high-duty-cycle vertical axis applications or large inertial loads can trigger "AL 30" (Regenerative Error) codes. To prevent operational shutdowns, calculate the cumulative kinetic energy feedback and consider wiring an external heavy-duty regenerative resistor across the P+ and C terminals, while updating parameter Pr. PA02 to indicate external power dispersion.
Ensure the CN8 safety jumper plug is inserted if the Safe Torque Off (STO) function is not wired to an external safety relay. Removing the plug or leaving the STO circuit open will generate an "AL 9F" (Safety Stop) system inhibit, preventing motor excitation. Always isolate control-signal cables (CN1/CN2) from the motor power line (U/V/W) by at least 30 cm to eliminate parasitic electromagnetic interference.
Global Express Shipping
Returns & Warranty
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For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|
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