Est. 1963

SFB Safety Field Box with PROFINET/PROFIsafe field bus interface

SFB Safety Field Box

Schmersal's SFB safety field box with PROFINET/PROFIsafe offers highly flexible, individually configurable safety solutions for complex machines and systems.  It allows simple, plug-and-play installation of up to eight safety devices.  That means rapid fitting that ensures cost-efficient, fail-safe installation with little wiring.

Thanks to its universal device interface with M12 8-pole connectors, it can be used to connect a wide variety of safety devices:

  • electronic and electro-mechanical safety interlocks
  • switches
  • sensors
  • light curtains
  • operation panels

Field box device connections can also be configured to link different devices, thus providing maximum flexibility in the conceptual design of safety solutions.

 

How the SFB Safety Field Box Works

The safety signals from connected safety devices are forwarded to a safety controller for evaluation via the secure PROFINET/PROFIsafe field bus interface. PROFIsafe is the functionally safe extension to standard communication via PROFINET. PROFIsafe-based communication is protected against alteration, transmission errors, changes in the telegram sequence and similar. Parallel transmission of safety signals allows safety devices to be freely linked in the safety controller.

All device connections also feature a self-resetting fuse element to protect lines.  After  eliminating  an  overcurrent  in  a  connection,  the  fuse  element resets itself after a brief cool-down period.

+ - SFB Safety Field Box Features Click to collapse
  • Installation of up to 8 safety switchgear devices
  • PROFINET / PROFIsafe field bus interface
    - Optimum process transparency through transfer of all diagnostic signals from connected devices to the control system. A digital input is available on each device socket.
  • M12 power connector with 10 A current capacity for installation of wide range of safety systems
  • Connect a wide variety of safety devices:
    – Electronic safety sensors with p-type semiconductor outputs (OSSD)
    – Electronic solenoid interlocks with p-type semiconductor outputs (OSSD) and 1- or 2-channel actuation of interlock function
    – Active opto-electronic protective devices (AOPD), such as safety light curtains and light grids
    – Control panels with electronic E-STOP function and non-safe command and signaling devices (max 4)
    – Safety switches and reed sensors with 2 NC contacts
    – Solenoid interlocks with 2 NC contacts and 1-channel solenoid control up to 0.8 A
  • Plug-and-play installation with Universal M12 device sockets and available connection cables:
    - Power to SFB cable, M12 connection to leads, various lengths
    - Controller to SFB communication cable, RJ45 to M12 connection, various lengths
    - Device connection cables, double ended M12 8-pole connections, various lengths
  • Series chain up to 10 safety field boxes:
    - SFB to SFB power cables, double ended M12 4-pole connections, various lengths
    - SFB to SFB Ethernet cables, double ended M12 4-pole connections, various lengths
  • LED status indicators:
    - 2 on each connection port, shows power and input status
    - additional LEDs for overall SFB status
  • Line protection with integrated automatic resettable fuses for all device connections.
  • Robust, industrial design:
    – Fiberglass reinforced thermoplastic enclosure
    – Protection class IP67
    – Operating temperature range –20 °C to +55 °C
    – cULus Approval
  • Wide range of accessories available, including port labels and protective covers for unused ports.

 

WATCH SCHMERSAL'S SFB SAFETY FIELD BOX PRODUCT DEMO

 

 

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