0.4 kW at 3000 rpm: what the ratings buy you
The 1FL6042-1AF61-2AH1: The 1FL6 frame on this code is the small end of the 1FL6 family — 0.4 kW continuous with a 1.27 Nm rated torque climbing to 1.9 Nm at standstill, with 3000 rpm rated speed on a 3-phase 400 V winding. That puts it squarely in the low-inertia class for small-format handling, indexing tables and auxiliary axes where the SINAMICS V70 or V90 is doing the drive work. Incremental encoder at 2500 increments per revolution is the feedback the velocity loop auto-tunes against; on this frame the 2500-line count is the limiting resolution factor, not the current loop, so positioning repeatability and low-speed torque smoothness both trace back to it. Match the inertia ratio to the load first before chasing loop gains. The holding brake and the IP65 sealing ring ship on this variant — the brake holds the axis when the drive stage drops out, and IP65 around the shaft seal lets the motor sit close to the process on a washdown-prone packaging or food line without a separate shroud.
Mounting, shaft and panel-side fit
45 mm shaft height with a plain shaft in tolerance N and an angled connector exit — the compact frame drops into the standard 1FL6 mounting footprint on a gear or coupling flange without a custom adapter plate. The angle plug keeps the cable bend radius clear of the housing edge so a flex-rated chain can track the axis without over-stressing the connector strain relief. Packaging footprint for a single unit is 432.00 x 222.00 x 250.00 mm — worth flagging for spares storage and for any line-side replacement where the motor will be staged before swap-in.
NRND — what the lifecycle flag means on this code
Siemens lists this order code as NRND, so the 1FL6042-1AF61-2AH1 is moving out of preferred new-design use while the factory continues to support installed bases — that is the window to lock in spares for existing lines or finalize a migration path to the current 1FL6 generation on new builds. RoHS compliance is in force since 01-01-18 and REACH Art. 33 disclosure applies to the article — the EU conformity paperwork that an MRO planner or a cross-border shipment will ask for is already on file under this code, so the regulatory side does not add to the procurement risk.