The 3SF7844-8BB24-0SS1: 14 mm resolution is finger-protection class per IEC 61496-1 — it detects objects as small as 14 mm diameter, so it stops the machine before a finger or tool reaches the pinch point. The 1650 mm protected height covers a typical standing operator's reach zone; pair it with a matching transmitter of the same height and resolution. Blanking (fixed or floating) lets you bypass selected beams for workpiece pass-through without disabling the safety function — useful when a fixture or part must break the curtain during the cycle. The 0 to 6 m range is the standard span; verify your installation distance falls within it. PROFIsafe bus connection means it talks directly to a F-CPU (fail-safe controller) over PROFINET with PROFIsafe profile, eliminating a separate safety relay or evaluation unit — one cable for both safety and diagnostics.
Siemens 3SF7844-8BB24-0SS1 Safety Light Curtain Receiver, 14
Siemens SIMATIC FS420I Type 4 safety light curtain receiver, 14 mm resolution, 1650 mm protected height, blanking, 0 to 6 m range, PROFIsafe bus connection, order code 3SF7844-8BB24-0SS1.
Product details
Frequently asked questions
What is the 3SF7844-8BB24-0SS1 used for?
It is a Type 4 safety light curtain receiver used for finger-protection guarding (14 mm resolution) in machine safety applications, with a 1650 mm protected height and PROFIsafe bus connection for direct integration with a fail-safe controller.
Where can I buy 3SF7844-8BB24-0SS1 and how is it quoted?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What is the closest alternative to 3SF7844-8BB24-0SS1 in the same family?
The closest peer is the matching transmitter for this receiver, which shares the same 14 mm resolution, 1650 mm height, and PROFIsafe interface. The receiver itself has no pin-compatible alternative outside the FS420I family — the PROFIsafe bus connection and Type 4 rating are specific to this design.