Siemens 1FK7042-2AC71-1QA0 SIMOTICS S-1FK7 1FK7-CT 0.59kW 3Nm 2000rpm Servo Motor

The Siemens 1FK7042-2AC71-1QA0 is a SIMOTICS S-1FK7 (1FK7-CT) permanent-magnet synchronous servo motor rated 0.59 kW at 2,000 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.

Selection Notes

This is the 600 V DC-link winding of the 1FK7042 frame, rated for 2,000 rpm — pick a 300 V winding instead if the drive's DC bus is limited to 300 V, or a higher-speed winding (3,000 rpm or 6,000 rpm nominal) if the application needs a wider speed range at the same 3 Nm standstill torque. The 2.900 kgcm² rotor inertia and 7.40 ms electrical time constant suit axes with fast current-loop response and moderate load inertia. Without a holding brake, the axis will drift under gravity or external load once drive power is removed — the with-brake variant of this same winding is the choice on vertical or overhung loads where position must be held at standstill.

Applications

Used as the servo motor in single- or multi-axis machine motion — packaging, pick-and-place, and material-handling axes — 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, and the 600 V DC-link rating matches standard 3-phase servo drive systems.