As a low-inertia servo motor, the 1FL6042-2AF21-1LB1 is optimised for dynamic positioning and speed control in applications that require rapid acceleration and deceleration. The 20-bit absolute encoder (plus 12-bit multi-turn) provides high-resolution position feedback, eliminating the need for a homing routine on power-up. Rated torque of 2.39 Nm is available continuously at the rated speed of 3000 rpm, matching the output of the SINAMICS V90 drive. The holding brake holds the load at standstill, which is essential for vertical-axis applications. The feather key shaft transmits torque to the load coupling.
Applications
This servo motor is used in packaging machines, pick-and-place systems, labelling equipment, and general automation machinery where precise speed and position control is required. The IP65 rating allows installation in wash-down environments without an additional enclosure.
Siemens has classified the 1FL6042-2AF21-1LB1 as a phase-out product with a discontinuation date of 2025-10-01. After this date, the motor will no longer be manufactured. Buyers should evaluate last-time-buy quantities or identify an official successor within the 1FL6 family for new designs.