Mitsubishi Servo Amplifier MR-J4-70B

Servo drive from the MR-J4 series, AC motion servo drive/amplifier with built-in dynamic brake, offering reliable performance and efficient motion control.

Brand Mitsubishi
Model Number MR-J4-70B
State In stock
Condition New Original
Warranty 12 months


Global Assurance

Mitsubishi MELSERVO-J4 Series Servo Amplifier MR-J4-_(-RJ) 10B 20B 40B 60B 70B 100B 200B 350B 500B 700B 11KB 15KB 22KB
Output Rated voltage 3-phase 170 V AC
Rated current [A] 1.1 1.5 2.8 3.2 5.8 6.0 11.0 17.0 28.0 37.0 68.0 87.0 126.0
  Voltage/ Frequency At ACinput 3-phase or 1-phase200 V AC to 240 V AC, 50 Hz/60 Hz 3-phase or 1-phase 200 V AC to 240 V AC, 50 Hz/60Hz (Note 13) 3-phase 200 V AC to 240 V AC, 50 Hz/60 Hz
At DCinput(Note 16) 283 V DC to 340 V DC
Rated current (Note 11)  [A] 0.9 1.5 2.6 3.2(Note 6) 3.8 5.0 10.5 16.0 21.7 28.9 46.0 64.0 95.0
Permissible voltage fluctuation  At ACinput 3-phase or 1-phase 170 V AC to 264 V AC 3-phase or 1-phase 170 V AC to 264 V AC (Note 13) 3-phase 170 V AC to 264 V AC
At DCinput(Note 16) 241 V DC to 374 V DC
Permissible frequency fluctuation Within ±5%
Power supply capacity[kVA] Refer to section 10.2.
Inrush current  [A] Refer to section 10.5.
Control circuit power supply input Voltage/ Frequency  At AC input 1-phase 200 V AC to 240 V AC, 50 Hz/60 Hz
At DC input(Note 16) 283 V DC to 340 V DC
Rated current  [A] 0.2 0.3
Permissible frequency fluctuation Within ±5%
Power consumption  [W] 30 45
Inrush current  [A] Refer to section 10.5.
Voltage 24 V DC ± 10%
Current capacity  [A] 0.3 (including CN8 connector signals) (Note 1)
Control method Sine-wave PWM control, current control method
Dynamic brake Built-in External option (Note 9, 12)
SSCNET III/H communication cycle(Note 8) 0.222 ms, 0.444 ms, 0.888 ms
Fully closed loop control Compatible (Note 7)
Scale measurement function Compatible (Note 10)
Load-side encoder interface (Note 5) Mitsubishi Electric high-speed serial communication
Communication function USB: connection to a personal computer or others (MR Configurator2-compatible)
Encoder output pulses Compatible (A/B/Z-phase pulse)
Analog monitor Two channels
Protective functions Overcurrent shut-off, regenerative overvoltage shut-off, overload shut-off (electronic thermal), servo motor overheat protection, encoder error protection, regenerative error protection, undervoltage protection, instantaneous power failure protection, overspeed protection, error excessive protection, magnetic pole detection protection, and linear servo control fault protection
Functional safety STO (IEC/EN 61800-5-2)

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