Servo Mitsubishi MR-J2 Junior
The unique servo system for micro applications using the latest in servo technology operating at 24 VDC input with: patented Real-Time Adaptive Tuning RS-232C serial interface for Windows based set-up ( MR-Configurator) speed, positioning, and torque modes low acoustic noise and a built-in parameter unit. The MR-J2-JR supports the following control methods: Position, Speed, Torque, SSCNET Network, Built-In Motion, and RS-485 Multi Drop.
Specifications and Configuration
The ultimate servo system using the latest in servo technology operating at 24VDC input with: patented Real-Time Adaptive Tuning; RS-232C serial interface for Windows based set-up speed, positioning, and torque modes; low acoustic noise and a built-in parameter unit.

A. MR-J2-JR Servomotors
B. MR-J2-JR Amplifiers
C. Cables
D. Software
E. System Options
MR-J2-JR Servomotors
Servomotor Selection

Specification
| Model Number | HC-AQ0135 | HC-AQ0235 | HC-AQ0335 | ||
| Stocked Item | – | – | S (Non-B only) | ||
| Continuous Characteristics (*1, *2) | Rated Output | kW | 0.01 | 0.02 | 0.03 |
| Rated Torque | N•m (oz•in) | 0.0318 (4.503) | 0.0637 (9.021) | 0.0955 (13.524) | |
| Rated Speed (*1) | r/min | 3000 | |||
| Maximum Speed | r/min | 5000 | 4500 | ||
| Instantaneous Permissible Speed | r/min | 5750 | 5175 | ||
| Maximum Torque | N•m (oz•in) | 0.0955 (13.524) | 0.191 (27.048) | 0.287 (40.643) | |
| Power at Continuous Rated Torque | kW/s | 2.0 | 5.6 | 9.7 | |
| Inertia Moment (*4) | J [x 10⁴ kg•m²] | 0.0050 | 0.0072 | 0.0094 | |
| WK² [oz•in²] | 0.027 | 0.039 | 0.051 | ||
| Recommended Ratio of Load Inertia Moment to Servomotor Shaft Inertia Moment | 30 times or less | ||||
| Power Supply Capacity | Refer to “Power supply capacity and generated loss of servo amplifier” in the Servo Amplifier Instruction Manual | ||||
| Rated Current (Maximum Current) (A) | 2.4 (7.7) | 2.4 (7.7) | 2.3 (7.4) | ||
| Speed/Position Detector | Encoder (resolution: 8192 pulses/rev) | ||||
| Accessory | Encoder | ||||
| Insulation Class | Class B | ||||
| Structure | Totally-enclosed self-cooling (protection type: IP55 (*6)) | ||||
| Environmental Conditions (*5) | Refer to Section 2.1 in the Servomotor Instruction Manual | ||||
| Weight kg (lb) (*3) | 0.19 (0.419) | 0.22 (0.485) | 0.25 (0.551) | ||
Notes:
- When the power supply voltage drops, we cannot guarantee the output and rated speed.
- 80% ED at low noise. 80% ED: Indicates the condition in which operation time at read torque accounts for 80% and the other no load time accounts for 20% in a single operation cycle.
- When the servomotor is equipped with reduction gear or electromagnetic brake, refer to the corresponding outline dimension drawing. For the EN Standard and UL/cUL Standard compliant models, please contact Mitsubishi.
- If the load inertia moment ratio exceeds the indicated value, please contact Mitsubishi.
- When the equipment is to be used in places where it is subjected to oil and/or water, such as on machine field sites, optional features apply to the equipment.
- Except for the shaft-through portion and connector end.
MR-J2-JR Amplifiers
Amplifier Selection

| Model Number | MR-J2-03A5 | MR-J2-03B5 | MR-J2-03C5 | |||
| Stocked Item | S | – | – | |||
| Circuit Power Supply (Note) | Voltage | 21.6 to 30VDC (instantaneous permissible voltage 34V) | ||||
| Power Supply Capacity | HC-AQ0135D | Continuous 0.8A, Max. 2.4A | ||||
| HC-AQ0235D | Continuous 1.6A, Max. 4.8A | |||||
| HC-AQ0335D | Continuous 2.4A, Max. 7.2A | |||||
| Control Circuit Power Supply (Note) | 24VDC+10% 200mA (400mA when using the servomotor equipped with electromagnetic brake) | |||||
| System | Sine-wave PWM control, current control system | |||||
| Dynamic Brake | Built-in | |||||
| Protective Functions | Overcurrent shut-off, regenerative overvoltage shut-off, overload shut-off, (electronic thermal relay), servomotor overheat protection, encoder fault protection, undervoltage, instantaneous power failure protection, overspeed protection, excessive error protection | |||||
| Speed Frequency Response | 250Hz or more | |||||
| Structure | Open (IP00) | |||||
| Environment | Ambient Temperature | Operation | °C (°F) | 0 to +55 (non-freezing) (32 to +131 (non-freezing)) | ||
| Storage | °C (°F) | -20 to +65 (non-freezing) (-4 to +149 (non-freezing)) | ||||
| Ambient Humidity | Operation (Storage) | 90%RH or less (non-condensing) | ||||
| Atmosphere | Indoors (no direct sunlight), Free from corrosive gas, flammable gas, oil mist, dust and dirt | |||||
| Altitude | Max. 1000m (3280 ft) above sea level | |||||
| Vibration | m/s² (ft/s²) | 5.9 or less (19.4 or less) | ||||
| Weight | kg (lb) | 0.2 (0.44) | ||||
Note: To comply with the low voltage directive, use a reinforced insulation stabilizing power supply.





















