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Servo Amplifier

MR-J3-A : General-purpose interface

Pulse train and analog input are available as a general purpose interface. Position, speed or torque control mode can be selected. Machine’s performance can be boosted by using the optimum adjustment function such as advanced vibration control and adaptive filter .


MR-J3-B : SSCNET III compatible"

By adopting SSCNET III (optical communication), a complete synchronous system can be configured by using the high-speed serial communication with cycle time as fast as 0.44ms between the controller and servo amplifier. SSCNET III can be set up just by inserting a dedicated cable (optical-fiber cable) into connectors, resulting in reduced wiring and preventing possibility of wiring error.Thanks to the optical communication, noise immunity has been greatly improved, and long distance wiring is made possible by up to 800m (maximum of 50m between stations x 16 axes).Fully closed loop control compatible servo amplifier is also available (MR-J3-B-RJ006).

MR-J3-T CC-Link compatible (with built-in positioning function)

By setting position and speed data in the point tables in the servo amplifier, positioning operation is possible with a start signal from a host controller. Setting position and speed data in the point table, and start and stop operation are possible via CC-Link communication. By using  MR-J3-D01 extension IO unit, point table selection and positioning operation with DI/O commands are enabled. (CC-Link communication is not available when using the MR-J3-D01.)
Servo Amplifiers 10A 20A 40A 60A 70A 100A 200A 350A 500A 700A
MR-J3-A/B 10B 20B 40B 60B 70B 100B 200B 350B 500B 700B
Power supply Voltage/frequency*   - 400V versions currently being prepared
A type 3-phase 200-230V AC, 50/60Hz, 1-phase 200-230V AC, 50/60Hz 3-phase 200-230V AC, 50/60Hz
B type 3-phase 200-230V AC, 50/60Hz, 1-phase 200-230V AC, 50/60Hz
Permissible voltage fluctuation C type 3-phase: 170-253V AC, 1-phase: 170-253V AC 3-phase 170-253V AC
B type 3-phase: 170-253V AC, 1-phase: 170-253V AC
Permissible frequency fluctuation Max. ±5%
Control state power supply Voltage/frequency 1-phase 170-253V AC, 50/60Hz (max. ±5% )
Power consumption (W) 30 45
Interface power supply A type 24V DC ±10% (max. 300mA)
B type 24V DC ±10% (max. 150mA)
Control system Sinusoidal PWM control / current control system
Dynamic brake Built-in
Protective functions Overcurrent shutdown, regeneration overvoltage shutdown, overload shutdown (electronic thermal relay), servo motor overheating protection, encoder fault protection, regeneration fault protection, undervoltage / sudden power outage protection, overspeed protection, excess error protection
Cooling / protection rating Self-cooling, open (IP00) Fan cooling, open (IP00)
Environment Ambient temperature Operation: 0-55°C (non-condensing);
Storage: -20-65 °C (non-condensing)
Relative humidity Operation: 90% RH max. (non-condensing);
Storage: 90% RH max. (non-condensing)
Elevation Max. 1000m above sea-level
Vibration Max. 5.9m/s² (0.6G)
Weight [kg] 0.8 0.8 1 1 1.4 1.4 2.3 2.3 4.6 6.2
Amplifier type
Part No. Title
MR-J3-10A Driver J3-A for 0.1KW
MR-J3-20A Driver J3-A for 0.2KW
MR-J3-40A Driver J3-A for 0.4KW
MR-J3-60A Driver J3-A for 0.6KW
MR-J3-70A Driver J3-A for 0.7KW
MR-J3-100A Driver J3-A for 1.0KW
MR-J3-200A Driver J3-A for 2.0KW
MR-J3-350A Driver J3-A for 3.5KW
MR-J3-500A Driver J3-A for 5.0KW
MR-J3-700A Driver J3-A for 7.0KW
MR-J3-10B Driver J3-B with SSCNET3 for 0.1 KW
MR-J3-20B Driver J3-B with SSCNET3 for 0.2 KW
MR-J3-40B Driver J3-B with SSCNET3 for 0.4 KW
MR-J3-60B Driver J3-B with SSCNET3 for 0.6 KW
MR-J3-70B Driver J3-B with SSCNET3 for 0.7 KW
MR-J3-100B Driver J3-B with SSCNET3 for 1.0 KW
MR-J3-200B Driver J3-B with SSCNET3 for 2.0 KW
MR-J3-350B Driver J3-B with SSCNET3 for 3.5 KW
MR-J3-500B Driver J3-B with SSCNET3 for 5.0 KW
MR-J3-700B Driver J3-B with SSCNET3 for 7.0 KW
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