Overview
The 1FL6042-2AF21-1MA1 is a Siemens 1FL6-series servomotor for SINAMICS V90 drives, rated at 750 W output with 2.39 Nm continuous torque at 3000 rpm. It carries an IP65 enclosure, a feather key shaft, and an absolute single-turn 21-bit encoder, making it a direct-fit option for precision motion axes in the V90 ecosystem.
This low-inertia rotor design (moment of inertia 0.897 kgcm²) gives the 1FL6042-2AF21-1MA1 a fast mechanical response — the rotor accelerates and decelerates quickly, which suits pick-and-place, labelling, and other short-stroke cyclic applications where settling time matters. The 21-bit absolute single-turn encoder reports position on every power-up without a homing move, reducing cycle time on machines that power-cycle between batches. Natural cooling (no fan) keeps the motor envelope clean and eliminates fan noise, but the duty cycle must be sized against the 4.7 A rated current — sustained overloads above that rating require a larger frame or forced cooling. The IP65 rating means the motor body withstands washdown and dust ingress, though the cable outlet connector must be properly mated to maintain the seal.
Applications
Siemens 1FL6 servomotors in this power class are common on packaging machines, assembly cells, and material-handling axes driven by SINAMICS V90 servo drives. The 750 W rating and 3000 rpm base speed cover moderate-inertia loads such as conveyor belts, rotary indexing tables, and spindle feeds in OEM machinery.