SS451LE by Danaher

The Danaher SS451LE synchronous motor from the Slo-Syn Synchronous Motors series delivers precise, load-insensitive rotational performance for industrial automation and electromechanical assemblies. Equipped with an advanced Hall-effect digital position sensor, the SS451LE operates over a broad supply voltage of 3.8 Vdc to 24 Vdc, enabling compatibility with a wide variety of control systems. The omnipolar sensing capability ensures accurate detection of magnetic fields regardless of pole orientation, while a typical response time of 3 µs supports high-speed feedback loops. Robust reverse polarity protection and a compact 90 mm frame make this motor well-suited for both continuous and intermittent duty cycles.

Detailed specifications of the SS451LE emphasize durability and integration flexibility. The motor features a typical activation (operate) point of ±60 Gauss and a release (deactivate) point of ±30 Gauss, ensuring reliable switching margins. Its output type of open-collector, sinking digital signal can drive loads up to 20 mA max, while maintaining a low supply current of 6 mA typical during idle states. The housing is constructed from thermoplastic material with a tin-plated lead finish to resist corrosion in harsh environments. Comprehensive protection measures include reverse polarity safeguards and impedance protection in the winding circuits to prevent damage from overcurrent events.

Operational performance is maintained across an extensive temperature range from –40 °C to 150 °C, ensuring stable operation in both cryogenic and high-heat applications. The motor locks directly to line frequency at 50–60 Hz, producing shaft speeds of 60 RPM at 50 Hz and 72 RPM at 60 Hz, with a steady current draw of 0.8 A under rated load conditions. A torque rating of 450 oz-in provides reliable mechanical force for conveyor drives, indexing tables, and rotary actuators. The design’s impedance protection feature safeguards against thermal overload during extended run times, while the enclosed thermoplastic housing resists contaminants and moisture ingress.

System integration is streamlined through a standardized wiring configuration (PER225008), reducing installation time and wiring errors. The SS451LE carries CE and UL Recognized (RU) markings to support compliance with international safety and performance standards. Its combination of Hall-effect position sensing, rapid response, and robust environmental tolerance makes the SS451LE ideal for industrial automation, laboratory instrumentation, packaging machinery, and precision conveyor systems requiring exact speed and position control.