Speed-torque envelope depends on supply voltage
The SH30401P17A2000: This SH3-frame servo motor delivers 0.176 N.m nominal torque at 115 V or 230 V single-phase input, and 0.184 N.m at 400 V or 480 V three-phase — a small torque bump when running on three-phase mains. The nominal speed jumps from 4000 rpm on single-phase to 9000 rpm on three-phase, with the same 9000 rpm ceiling as the maximum mechanical speed. Continuous stall torque is 0.21 N.m across the three-phase voltage range, with a peak stall torque of 0.75 N.m at 480 V three-phase — roughly 3.6× the continuous rating for short-duration moves.
Encoder and feedback — drive matching
The absolute multiturn SinCos Hiperface encoder with 16 periods per revolution gives position feedback without a home cycle on power-up — the drive knows the rotor angle immediately. Hiperface is a standard single-cable protocol; confirm the drive's feedback card supports this interface before wiring.
Physical fit — flange, shaft, and sealing
40 mm international standard flange with a 30 mm centring collar and 2.5 mm collar depth — bolts through four 4.5 mm holes on the mounting face. 8 mm shaft with 25 mm length, parallel key 3 mm wide — standard for this frame size. IP54 at the shaft bushing without the seal ring; IP65 with the seal ring fitted and the rotatable right-angled connector mated — the connector O-ring is the wet-end barrier.
Electrical parameters and thermal limits
Stator resistance 17.2 Ω and inductance 7.3 mH — these set the electrical time constant at about 0.42 ms, fast enough for the 9000 rpm speed loop. Continuous stall current 1.12 A; maximum RMS current 4.5 A for 3 seconds peak — the drive's current loop must be tuned to respect the 4.5 A ceiling. Torque constant 0.19 N.m/A at 120 °C copper temperature; back EMF constant 13.6 V/krpm at 20 °C — use the hot torque constant for sizing at continuous duty.