





The Mitsubishi MR-J2S-350B is a 3.5 kW AC servo drive from the renowned MR-J2S series, designed to deliver exceptional torque and speed control for a wide range of motion control tasks. This model, the MR-J2S-350B, operates on a three-phase 200–230 VAC main circuit and a single-phase 200–230 VAC control circuit, both at 50/60 Hz. It features a fan-cooled, open (IP00) enclosure that ensures reliable heat dissipation in continuous-duty applications. With a maximum command input frequency of 10 Mpps, it handles high-resolution position loops with ease. The drive includes a built-in dynamic brake for the 350B model, providing rapid stopping without external hardware. Its robust protection mechanisms guard against overcurrent, regeneration overvoltage, and servo motor overheating, making it a trusted choice for CNC machines, packaging equipment, and robotic systems.
| Parameter | MR-J2S-350B (3.5 kW) |
|---|---|
| Control Circuit Power Supply | 1-phase 200–230 VAC, 50/60 Hz |
| Control Circuit Voltage Fluctuation | 170–253 VAC |
| Control Circuit Frequency Fluctuation | ±5% max |
| Control Circuit Power Consumption | 50 W |
| Main Circuit Power Supply | 3-phase 200–230 VAC, 50/60 Hz |
| Main Circuit Voltage Fluctuation | 170–253 VAC |
| Main Circuit Frequency Fluctuation | ±5% max |
| Control System | Sine-wave PWM control / Current control system |
| Dynamic Brake | Built-in |
| Protection Features | Overcurrent, regeneration overvoltage, overload (electronic thermal), servo motor overheat, encoder fault, regeneration fault, undervoltage/sudden power outage, overspeed, excess error |
| Maximum Command Input (Position Control) | Approx. 10 Mpps |
| Cooling Method / Structure | Fan cooling / Open (IP00) |
| Ambient Temperature | 0 to 55°C (32 to 131°F), storage: –20 to 65°C (–4 to 149°F) |
| Ambient Humidity | 90% RH max (non-condensing), storage: 90% RH max |
| Atmosphere | Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist, or dust |
| Elevation | 1000 m (3280 ft) or less above sea level |
| Vibration Resistance | 5.9 m/s² max |
| Mass | 2.0 kg (4.4 lb) |

What Does Our Clients Say
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Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22