830 W SH3 servo — voltage-dependent speed and torque
The SH30703M02A2100 is a Schneider Electric SH3 series servo motor delivering 830 W continuous power from a 70 mm flange frame. Its nominal speed and torque are tied directly to the supply voltage: 3000 rpm at 400 V three-phase with 2.63 N.m, or 3600 rpm at 480 V three-phase with the same torque figure. On single-phase 230 V it drops to 1500 rpm and 2.95 N.m; on 115 V single-phase it runs 750 rpm at 3.05 N.m. The motor is a three-phase design and the peak stall torque hits 11.3 N.m across the 115–480 V three-phase range. This is a smooth-shaft variant without a holding brake — the load must be held externally or by the drive's holding brake resistor if the application requires position hold at power-down. The shaft measures 14 mm diameter by 30 mm length with a 5 mm keyway. Cooling is by natural convection only, so the thermal budget depends on the mounting surface and ambient — no fan to lean on for extended low-speed high-torque operation.
Encoder feedback and environmental sealing
Feedback comes from an absolute multiturn SinCos Hiperface encoder — this gives position and speed data over a SinCos link, compatible with Schneider's Lexium drive family and other drives supporting the Hiperface protocol. The multiturn absolute count survives power cycles, so homing on restart is unnecessary for most rotary axes. The motor body and shaft bushing carry an IP65 rating per IEC 60034-5, meaning it's sealed against dust ingress and low-pressure water jets. That suits it for washdown zones in food processing or wet machining environments, provided the mating connector (straight or rotatable right-angle,) is also IP65-rated and properly seated. The electrical connection uses a straight connector as standard, with a rotatable right-angle option available.
Electrical parameters and bearing load limits
The stator resistance measures 10.7 Ω with an inductance of 27.65 mH, and the torque constant is 1.4 N.m/A at 120 °C copper temperature. The back EMF constant is 95 V/krpm at 20 °C. Continuous stall current is 2.1 A, with a maximum RMS current of 8.7 A — the same figure is the 3-second peak current rating, so the drive's current loop should be limited to 8.7 A for short overloads and 2.1 A for continuous hold.