Motion loop and feedback chain
The SH31002P0BF3100: This SH3 series servo motor carries an absolute multiturn Hiperface DSL encoder — single-cable feedback that carries both power and position data, eliminating a separate feedback harness and the associated wiring error point on the axis. The motor is wound for three-phase supply and delivers rated torque across a speed range that depends on the input voltage: 2000 rpm at 230 V single-phase, 4000 rpm at 400 V three-phase, and 4800 rpm at 480 V three-phase — so the same frame covers both 400 V and 480 V lineups without a winding change. Continuous output power is 1930 W at 400 V and 480 V three-phase, dropping to 1090 W on 230 V single-phase — the nominal torque follows the same pattern: 5.2 N·m at 230 V, 4.6 N·m at 400 V, 4.4 N·m at 480 V.
Holding brake and mechanical limits
The integrated holding brake delivers 9 N·m holding torque — enough to hold a vertical axis load at rest without servo current, with a pull-in power of only 12 W so the brake coil stays cool during prolonged holding. Motor flange is the 100 mm international standard (3.9 in), with a 19 mm smooth shaft and 40 mm shaft length — the smooth shaft end means no keyway, so the coupling or pulley must be clamped, not keyed. Maximum radial force at the shaft is 3730 N at 1000 rpm, derating to 2580 N at 3000 rpm — budget the belt or direct-drive load against these limits, not the peak stall torque alone. Maximum axial force is 740 N — relevant for helical-gear or thrust-load applications where the motor bearing carries the axial component.
Thermal and electrical parameters for drive tuning
Stator resistance is 2.4 Ω and inductance is 13.5 mH — these values go into the servo drive's autotuning routine for current-loop bandwidth and gain scheduling. Torque constant is 1.21 N·m/A at 120 °C copper temperature; back EMF constant is 77 V/krpm at 20 °C — the drive's velocity loop uses the Ke figure to estimate speed from the BEMF during coasting, and the Kt figure scales the current command to torque. Peak stall torque is 18.3 N·m across the 115–480 V range — this is the torque available for acceleration and deceleration transients, not continuous duty; continuous stall torque is 5.8 N·m at 4.8 A continuous stall current.
Environmental sealing and connections
IP65 rating per IEC 60034-5 on both the motor body and the shaft bushing — the motor withstands washdown spray from any direction, making it suitable for food-processing or wet-floor environments without an additional cover. Cooling is natural convection — no external fan, so no fan noise or filter maintenance, but the continuous torque must be derated if the motor is enclosed in a cramped cabinet without airflow. Electrical connection is via a rotatable right-angled connector and a quicklock straight connector — the rotatable right-angle version lets the cable exit in any of four orientations, useful when the motor is mounted in a tight corner of the machine frame.