Siemens 1FK7062-2AF71-1QB0 SIMOTICS S 1FK7-CT 1.9kW 8.5Nm 3000rpm Brake Servo Motor

The Siemens 1FK7062-2AF71-1QB0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated 1.9 kW, 8.5 Nm standstill torque (M0, 100K), and 3000 rpm rated speed at 600 VDC bus voltage. It is naturally cooled, IMB5-mounted, and fitted with a DRIVE-CLiQ absolute single-turn 20-bit encoder (AS20DQI); this order number adds a holding brake, raising the moment of inertia to 12.200 kgcm².

Technical Specifications

Selection Notes

This 1FK7062-2AF71 winding adds a holding brake to the mid-speed 3000 rpm, 91.0%-efficient winding in the 1FK7062 frame, making it the choice for vertical or unbalanced axes at this speed point. The brake raises moment of inertia to 12.200 kgcm² and total weight to 10.5 kg over the brake-less build in this winding, and lowers shaft torsional stiffness to 26,500 Nm/rad. The 1.60 Nm/A torque constant and 4.0 A rated current for 8.5 Nm standstill torque carry over unchanged from the brake-less winding, since the brake is a mechanical add-on at the non-drive end and does not alter the stator's electrical design.

Applications

Natural (fan-less) cooling and IP64 protection suit compact machine enclosures without forced airflow. The DRIVE-CLiQ interface connects directly to SINAMICS S120/S210 drive systems over a single feedback cable. The mid-speed, holding-brake configuration fits vertical or unbalanced axes running at moderate throughput.