Mitsubishi MR-J3-70A Servo Drive

Series#: Mitsubishi

Product Details

Mitsubishi MR-J3-70A Servo Drive – 750W rated output, high-performance AC servo amplifier for precision motion control.
Advanced sine-wave PWM control with current control system ensures smooth, accurate torque and speed regulation.
Built-in dynamic brake for rapid, safe deceleration in emergency stops (standard on 70A model).
Wide input voltage range: 3-phase 200-230VAC 50/60Hz, with permissible fluctuation of 170-253VAC.
High-resolution encoder feedback: 262,144 pulses/rev for exceptional positioning accuracy.
Compact, fan-cooled open IP00 design – robust for industrial environments with ambient temperature up to 55°C.
Guaranteed 100% Original factory condition, offering fast and secure worldwide delivery.

Specification

The Mitsubishi MR-J3-70A servo drive is a cornerstone of the MR-J3 series, engineered for demanding industrial automation applications requiring precise speed, torque, and position control. Rated at 750W and operating on a 3-phase 200-230VAC supply, this amplifier delivers reliable performance with a sine-wave PWM control system and built-in dynamic brake for enhanced safety. Its high-resolution encoder interface (262,144 p/rev) and electronic gear functionality make it ideal for CNC machinery, robotics, and packaging equipment. The MR-J3-70A is 100% original, factory-new, and available for immediate shipment.

Parameter	Specification (MR-J3-70A)
Rated Output	750W
Main Circuit Power Supply	3-phase 200-230VAC 50/60Hz
Control Power Supply	1-phase 200-230VAC 50/60Hz
Permissible Voltage Fluctuation	170-253VAC (3-phase); 170-253VAC (1-phase)
Permissible Frequency Fluctuation	±5% maximum
Power Consumption	30W (main circuit); 30W (control circuit)
Interface Power Supply	24VDC ±10%, 300mA required
Built-in Regenerative Resistor	20Ω (standard)
External Regenerative Resistor	Not supplied as standard
Control System	Sine-wave PWM control / current control system
Dynamic Brake	Built-in
Safety Features	Overcurrent, overvoltage, overload (electronic thermal), motor overheat, encoder fault, regeneration fault, undervoltage, overspeed, excess error protection
Maximum Input Pulse Frequency	1Mpps (differential receiver); 200kpps (open collector); optional 4Mpps
Positioning Feedback Pulse	262,144 pulses/rev (encoder resolution)
Command Pulse Multiple	Electronic gear A/B: A=1-1,048,576; B=1-1,048,576; 1/10 < A/B < 2000
Positioning Complete Width	0 to ±10,000 pulses (command pulse unit)
Excess Error	±3 rotations
Torque Limit	Set by parameters or external analog input (0 to +10VDC / maximum torque)
Speed Control Range	Analog command 1:2000; internal command 1:5000
Analog Speed Command Input	0 to ±10VDC / rated speed
Speed Fluctuation Rate	±0.01% max (load 0-100%); 0% (power ±10%); ±0.2% max (ambient 25°C±10°C)
Torque Control Mode	Analog torque command input: 0 to ±8VDC / maximum torque
Speed Limit (Torque Mode)	Set by parameters or external analog input (0 to ±10VDC / rated speed)
Structure	Fan-cooled open type (IP00)
Ambient Temperature	0 to 55°C (operation); -20 to 65°C (storage)
Ambient Humidity	90% RH max (non-condensing)
Atmosphere	Indoors, no corrosive/inflammable gas, oil mist, or dust
Elevation	1000m or less above sea level
Vibration	5.9 m/s² max
Weight	1.4 kg (3.1 lb)