New versions of the Safety Fieldbox from Schmersal for additional fieldbus systems

Unique features of the Safety Fieldbox from Schmersal include the need for just a single M12 slot for solenoid interlocks and safety light curtains and the connection of control panels with EMERGENCY STOP function and up to three non-safe command and signalling devices. 

Connecting safety devices via the Safety Fieldbox also helps to save costs, as up to eight devices can be connected to a single Fieldbox, which is much more cost-effective than equipping each individual device with a bus interface.

An integrated digital input on each device slot allows the diagnostic signals of all connected safety devices to be evaluated. This means that safety-related and operational signals, such as those required for diagnostic purposes, can be collected and transmitted. The user can use this information to detect irregularities, e.g. a safety guard that has been moved, and enable prompt intervention if service is deemed necessary. This helps to improve system availability and minimise the risk of downtime. Users can also benefit from greatly simplified, and therefore more cost-effective, wiring of safety devices.

SFB Port-Extender: Extension module with additional digital inputs and outputs

The new SFB port extender is a powerful extension to the Safety Field Box (SFB) that significantly simplifies the connection of additional switching devices in the field. Up to four PCB modules can be connected per SFB – each of which enables the connection of additional digital I/O components. The result: maximum flexibility for customised applications in automation technology.

Non SFB-capable devices can also be integrated
A particular advantage of the SFB port extender is the possibility of connecting a large number of non-safe switching devices to the SFB. These can be easily connected and analysed via the three supported fieldbus protocols - ideal for heterogeneous system landscapes. Power is supplied directly via the SFB connection, which reduces the installation effort and simplifies system integration.

Technical features at a glance:

• Installation module for customised control panels, e.g. with illuminated buttons, EMERGENCY STOP or other digital I/O devices
• Up to 4 port extenders can be connected per SFB
• 8 digital inputs (24 VDC) for electromechanical or electronic switches
• 8 digital outputs (24 VDC / 300 mA) for LED indicator lights, lamps and other loads (total current max. 800 mA)
• 2-channel safety input for the connection of safety switches with contacts

With the SFB port extender, Schmersal offers a future-proof solution for expanding decentralised control systems – compact, powerful and versatile.