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Mitsubishi MELSERVO MR-J4 MR-J4-70A

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MR-J4-70A

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The Mitsubishi MELSERVO-J4 series MR-J4-70A is a high-performance servo amplifier designed for precise motor control. It can handle a fuse current rating of 20A and a fuse voltage rating of 300VAC for its main circuit power supply. With an instantaneous maximum output power rating of 2625W and an instantaneous power failure tolerance rating of 1150W, it ensures reliable performance. The MR-J4-70A servo amplifier has a built-in regenerative resistance rating of 20W and an inverse efficiency rating of 85%.

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Ships from Raleigh, NC
2 Year DO Supply Warranty
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Technical specifications for MR-J4-70A

ManufacturerMitsubishi
Product LineMELSERVO MR-J4
Part NumberMR-J4-70A
Weight2.88 lbs (1.30 kg)
Model TypeServo Amplifier
Rated Output Voltage3-phase 170 VAC
Rated Output Current5.8 A
Main Circuit Voltage and Frequency3-phase or 1-phase 200 V AC to 240 V AC, 50 Hz/60 Hz
Main Circuit Rated Current3.8 A
Main Circuit Permissible Voltage Fluctuation3-phase or 1-phase 170 V AC to 264 V AC
Control Circuit Voltage and Frequency1-phase 200 to 240 VAC, 50/60 Hz
Control Circuit Rated Current0.2 A
Control Circuit Power Consumption30 W
Interface Power Voltage Supply24 VDC
Maximum Input Pulse Frequency4 Mpulses/s (for differential receiver), 200kpps (for open collector)
StructureForce-cooled, Open (IP rating: IP20)
Inrush Current from the Control Circuit20A to 30A
Inrush Current from the Main Circuit34A
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The Mitsubishi MR-J4-70A servo amplifier is a highly capable MELSERVO-J4 series servo amplifier designed for precise motor control. This servo amplifier can handle a fuse current rating of 20A and a fuse voltage rating of 300VAC for its main circuit power supply. Its instantaneous maximum output rating is 2625W, and its tolerance rating against instantaneous power failure is 1150W, ensuring reliable performance even with fluctuating power. For smooth and efficient operation, the MR-J4-70A supports an inrush current rating of 34A from the main circuit and 20A to 30A from the control circuit. Additionally, its built-in regenerative resistance rating is 20W, and it supports energy efficiency during deceleration and regenerative processes. The servo amplifier exhibits an impressive inverse efficiency rating of 85%. With a capacitor charging capacity of 18J, the MR-J4-70A ensures stable operation by providing sufficient energy storage during dynamic movement. Its rated output voltage value is 170 VAC (3-phase), and its rated output current value is 5.8 A. It supports robust motor control in various applications. The MR-J4-70A servo amplifier’s main circuit voltage can be 3-phase or 1-phase AC voltage, and its main circuit voltage range is 200 to 240 VAC at 50 Hz/60 Hz. The main circuit current rating is 3.8 A. The control circuit voltage is 1-phase voltage, and the control circuit voltage range is 200 to 240 VAC at 50/60 Hz, with a rated current of 0.2 A. The control circuit can handle voltage fluctuations ranging from 170 to 264 VAC (1-phase). With a power consumption rating of 30W, the control circuit operates efficiently while providing the necessary signals for precise servo control. The MR-J4-70A servo amplifier supports Sine-wave PWM control and a current control system for accurate motor positioning and smooth operation. The servo amplifier incorporates a dynamic brake, enhancing safety and stability during deceleration. It can handle maximum input pulse frequencies of 4 Mpulses/s (for the differential receiver) and 200kpps (for the open collector), enabling responsive and dynamic motor control. The MR-J4-70A has a force-cooled, open structure with an IP20 rating that is suitable for indoor use.