Product Description:

The D3.SM.503-24B0 is a permanent-magnet synchronous servo motor produced by Kollmorgen within the 6SM Synchronous Servo Motors series. It serves as the rotary actuator in automated machinery, translating regulated DC-link energy from a matched drive into controlled shaft torque and velocity for indexing tables, pick-and-place axes, and similar motion tasks. The model integrates an eight-pole rotor and resolver feedback to maintain closed-loop alignment between the commanded and actual positions.

Under continuous load, the motor delivers 2.9 kW of mechanical output while operating at a rated speed of 2000 rpm. This operating point is achieved with a rated torque of 14.0 Nm when the drive supplies 7.3 A from a 330 V DC link. During short transients, the current may rise to 29.4 A, giving the servo the acceleration capability needed for rapid motion. Magnetic interaction is influenced by a stator winding inductance of 9.2 mH, which shapes the current rise time and helps filter switching harmonics. The two-pole resolver fitted to the rear housing returns rotor angle data to the drive for position and commutation control. The phase resistance is 2.0 Ω, contributing to copper losses that must be conducted through the motor frame.

A spring-applied holding brake is integrated into the motor and releases when 24 V DC is applied at 0.84 A. When engaged, the brake supplies 22 Nm of static locking torque, so loads remain fixed during power-down. Under stalled electrical excitation, the motor can develop 15.3 Nm while drawing 8.8 A, representing its maximum continuous torque without shaft rotation. The back electromotive force has a voltage constant of 166 V/1000 rpm, allowing the drive to predict generated voltage and set current limits as the speed changes. Eight rotor poles reduce the electrical frequency at a given mechanical speed, easing inverter switching demands and lowering iron loss.