HG-SN102BJ-S100 Mitsubishi AC Servo Motor HGSN102BJS100 New Factory Sealed

MELSERVO JE 1kW Brake Motor with 17-Bit Encoder - Factory Sealed

The Mitsubishi HG-SN102BJ-S100 represents the brake-equipped variant of the HG-SN 102 series, specifically engineered for applications where gravity, spring load, or external forces require controlled positioning when power is off or during fault conditions.

As part of Mitsubishi's MELSERVO JE series and HG-SN motor family, this motor delivers exceptional performance with 1 kW rated output at 2,000 RPM, rated torque of 4.77 Nm, and maximum speed of 3,000 RPM. Operating on 200V AC class supply with 5.6A rated current, it features a 17-bit absolute encoder (131,072 ppr), integrated electromagnetic holding brake, oil seal at shaft exit, and IP67 protection.

The BJ designation confirms the integrated electromagnetic holding brake, which operates on a spring-engaged, power-released principle. When brake release voltage is applied, the motor shaft rotates freely. When voltage is cut, the spring immediately engages the brake disc, locking the shaft in position. This fail-safe design ensures automatic axis locking during power failure or emergency stops.

This brake system is essential for vertical axes holding loads, robot joints maintaining position under gravity, and inclined conveyor drives where uncontrolled movement must be prevented when the servo goes offline.

The holding brake is designed for position maintenance at rest, not for dynamic stopping from speed. Using it for deceleration would cause rapid wear. Dynamic deceleration is handled by the servo amplifier.

The 17-bit absolute encoder retains position data through power cycles when paired with an appropriate amplifier backup battery. This eliminates the need for homing operations on startup, significantly reducing cycle times in applications where homing is slow or mechanically constrained.

The S100 suffix indicates this motor is specifically configured for Super MR-E series amplifiers, with tailored encoder signal interfaces and parameter sets. For standard MR-JE amplifier systems, verify compatibility or consider the standard HG-SN102BJ variant.

The Totally Enclosed Natural Cooling (TENC) structure relies on convective heat transfer from the motor's outer surface and mounting flange, eliminating the need for cooling fans that could fail. The sealed construction enables IP67 protection, making the motor suitable for harsh environments.

Proper installation requires a 130 × 130 mm aluminum mounting flange, which acts as a supplementary heatsink. Undersizing the flange reduces the motor's effective continuous torque rating in practice.