1.54 kW servo with holding brake and Hiperface encoder
The MH30703P01F2200 is a Schneider Electric MH3 series servo motor with an integrated holding brake, rated for 1.54 kW continuous power at 480 V three-phase input. The brake pull-in power is 7 W, and the holding torque is 3 N.m — enough to hold a vertical axis load at rest without the drive maintaining torque. The single-turn SinCos Hiperface encoder provides absolute position feedback within one mechanical revolution, with sinusoidal commutation signals for smooth low-speed torque ripple. This encoder type is common in applications requiring position hold at power-down and re-homing avoidance — typical for gantry Z-axes and rotary indexing tables.
Torque and speed envelope across supply voltages
Nominal torque varies with supply voltage: 3.18 N.m at 115 V three-phase, 2.96 N.m at 230 V single-phase, 2.53 N.m at 400 V three-phase, and 2.26 N.m at 480 V three-phase. The peak stall torque is 10.2 N.m across the 115-480 V range, giving a 3:1 peak-to-continuous ratio for acceleration and deceleration transients. Stator resistance is 2.65 Ohm and inductance is 8.64 mH, giving an electrical time constant of about 3.3 ms. The 10-pole motor design means the electrical frequency at 6000 rpm is 500 Hz — the drive's current loop bandwidth must be at least 5 kHz to track the sinusoidal commutation.
IP65 enclosure with rotatable connectors
The motor carries an IP65 rating, meaning the housing is dust-tight and protected against low-pressure water jets from any direction. The rotatable right-angled connectors allow the cable exit to be oriented in 90° increments around the motor body — useful when the motor is mounted in a tight enclosure corner or against a machine frame. The flange size is 70 mm (2.8 in) with a centring collar diameter of 60 mm and depth of 2.5 mm, matching the international standard flange pattern. The smooth shaft (14 mm diameter, 30 mm length) means the load coupling must use a clamping or keyless bushing — no keyway is provided, so torque transmission relies on the clamping force of the shaft-collar set screw. Maximum radial force at the shaft centre is 730 N at 1000 rpm, derating to 400 N at 6000 rpm. For belt-driven loads, the belt tension must stay below this curve — a common oversight that leads to premature bearing failure.
The motor mates with Schneider LXM52 and LXM62 servo drives — the nominal torque values in the spec table are listed per drive model and supply voltage, so confirm the drive model and input voltage before specifying.