Product Description:

The 6SM 47L-3.000-G-S3-1325 is a synchronous servo motor manufactured by Kollmorgen within the 6SM Synchronous Servo Motors series. The motor converts electrical energy into precise rotary motion for industrial automation axes that require high positioning accuracy and stable speed regulation. Multi-turn EnDat feedback is integrated to supply absolute position data to the drive controller, enabling repeatable indexing without homing routines. The absolute feedback also preserves the recorded shaft position across power cycles, allowing the controller to resume operation with reliable position information.

Under continuous load, the motor delivers a rated mechanical output of 0.69 kW at a shaft speed of 3000 rpm. This operating point corresponds to a rated torque of 2.2 Nm, while the phase current remains at 2 A. A torque constant of 1.33 Nm/A relates commanded current to produced torque, simplifying current-mode control. The winding set has an inductance of 25 mH and a resistance of 11 Ω. The back electromotive force rises by 81 V for every 1000 rpm of rotor speed, which helps determine compatible drive voltage and response characteristics. At standstill, the current is limited to 2.3 A to support stationary operation without exceeding the continuous thermal capacity of the winding.

For dynamic events, the drive can supply a peak current of 9 A, allowing acceleration torque above the continuous rating. During zero-speed operation, the motor can sustain a standstill torque of 3 Nm. Motion is secured during power loss by a normally engaged holding brake with a holding capacity of 6 Nm. The brake releases at 24 VDC and dissipates 16 W while energized. A bimetallic sensor embedded in the stator opens at 145 °C, giving the control system a clear shutdown signal before the motor insulation reaches its thermal limit. This sensor provides direct thermal protection during extended holding periods, repeated acceleration cycles, and other operating conditions that increase stator temperature.