Siemens 1FK7042-2AF71-1QA0 SIMOTICS S-1FK7 1FK7-CT 0.82kW 3Nm 3000rpm Servo Motor

The Siemens 1FK7042-2AF71-1QA0 is a SIMOTICS S-1FK7 (1FK7-CT) permanent-magnet synchronous servo motor rated 0.82 kW at 3,000 rpm, delivering 3 Nm standstill torque (M0, 100K) from a 600 V DC link. It has no holding brake, carries a single-turn 20-bit DRIVE-CLiQ absolute encoder (AS20DQI), and is naturally cooled in a shaft height 48, IMB 5 (IM V1/V3) housing rated IP64.

Technical Specifications

Selection Notes

This winding is rated for a 600 V DC link at 3,000 rpm, drawing 2.0 A for the same 3 Nm standstill torque as the other 1FK7042 windings in this batch — pick it over the 300 V/3,000 rpm winding when the drive runs a standard 600 V DC bus, and over the 2,000 rpm winding when the application needs the higher speed at the same frame and torque. Its 1.38 Nm/A torque constant and 89.0% efficiency sit between the 2,000 rpm and 6,000 rpm windings in the same frame. No holding brake is fitted; the with-brake version of this winding is the choice for vertical or overhung axes.

Applications

Used as the servo motor in single- or multi-axis machine motion needing a moderate speed range on a standard 600 V DC-link drive — indexing tables, conveyor drives, and pick-and-place arms — driven through a DRIVE-CLiQ-based servo drive via the AS20DQI single-turn absolute encoder interface. The naturally-cooled IMB 5 housing suits panel- or machine-frame-mounted installations without forced-air cooling.