830 W SH3 servo — voltage-dependent speed and torque
The SH30703M11A1000 delivers 830 W continuous power from a 70 mm flange frame, but the nominal speed and torque depend on the supply voltage. At 400 V three-phase, nominal speed is 3000 rpm with 2.63 N.m; at 480 V three-phase, speed reaches 3600 rpm at the same torque. On single-phase 115 V, speed drops to 750 rpm and torque rises to 3.05 N.m — the motor is wound for multi-voltage operation, so the drive parameter set must match the line feed. Peak stall torque is 11.3 N.m across the 115...480 V three-phase range, with a continuous stall torque of 2.94 N.m at 2.1 A continuous stall current. The 8.7 A maximum current (Irms) and 3 s peak output current define the drive sizing — the servo drive must supply at least this peak to exploit the full transient torque.
Absolute single-turn Hiperface encoder — no homing on power-up
The encoder is an absolute single-turn SinCos Hiperface type — it reports position at power-up without a homing sequence, so the machine can resume operation immediately after a power cycle. The single-turn resolution is limited to one mechanical revolution; multi-turn applications need a different encoder variant or external counting. The electrical connection uses a rotatable right-angled connector or a straight connector — both are listed, so the cable exit direction can be oriented to fit tight cable-tray routing. The IP rating is IP54 at the shaft bushing without a shaft seal ring, and IP65 on the motor body and with the shaft bushing seal ring fitted, per IEC 60034-5. For washdown zones, the seal ring is required.
Natural convection cooling — no fan, no forced-air dependency
Cooling is natural convection — there is no external fan, so the motor runs silently and has no fan filter to maintain. The thermal limit is set by the copper hot-spot temperature of 130 °C. The stator resistance is 10.7 Ohm and inductance is 27.65 mH, which together with the torque constant of 1.4 N.m/A at 120 °C define the thermal model for the drive's I²t protection.