The Mitsubishi HF-SN102BJKM is a medium-inertia AC servo motor from the MELSERVO-J3 series, delivering 1kW rated output at 200VAC 3-phase supply. It features a rated torque of approximately 4.77 Nm at 2000 rpm rated speed, with maximum speed up to 3000 rpm. The HF-SN series is designed for applications requiring smooth motion and medium load inertia matching, making it ideal for machine tool feed axes, industrial robots, packaging machinery, printing presses, and semiconductor manufacturing equipment. The B suffix indicates a built-in electromagnetic holding brake for vertical axis safety, while K denotes a keyway shaft for pulley or coupling attachment. An 18-bit absolute encoder (262,144 pulses/rev) provides high-resolution position feedback for precise motion control. The IP65-rated housing ensures reliable operation in dusty and wet industrial environments.
**Q: What does the HF-SN102BJKM model code mean?**
A: HF = Rotary servo motor, SN = Medium inertia series, 102 = 1kW rated output, B = with electromagnetic brake, J = MELSERVO-J3 series, K = keyway shaft, M = specific encoder type/options.
**Q: Which servo amplifier is compatible with this motor?**
A: The HF-SN102BJKM is designed for use with Mitsubishi MR-J3 series servo amplifiers, specifically models rated for 1kW output (e.g., MR-J3-100A/B). It also works with MR-J4 series amplifiers using an adapter or conversion cable.
**Q: What is the difference between HF-SN (medium inertia) and HF-KN (low inertia)?**
A: HF-SN medium inertia motors have a larger rotor inertia, making them better suited for applications with higher load-to-motor inertia ratios (e.g., belt drives, large tables). HF-KN low inertia motors offer faster acceleration/deceleration for smaller, lighter loads.
**Q: Does the built-in brake require separate power wiring?**
A: Yes, the electromagnetic brake requires a separate 24VDC power supply and is typically wired to the servo amplifier's brake output. The brake is designed for holding (parking) only, not for dynamic braking during operation.
**Q: What is the difference between HF-SN and HF-SP series?**
A: HF-SN is medium inertia while HF-SP is medium-high inertia. HF-SP motors have larger rotor inertia and are better suited for applications with very high load inertia. Both series share the same frame sizes and mounting dimensions for equivalent power ratings.
