28.05.2024 • Product

Schmersal: Field bus gateway SDG for serial diagnostics – GSA25 Finalist Shortlist Highlight

Electronic safety sensors and solenoid interlocks with SD interface can transmit comprehensive diagnostic data to a higher-level machine control system. The data from the series-connected safety switching devices (up to 31 devices) is sent to the SDG fieldbus gateway via the SD bus and from there to the machine control system via the fieldbus.


For example, error messages - such as overtemperature, defective actuator or invalid combination of actuators - can be forwarded. Advantages: improved fault diagnosis, minimisation of downtimes, increased productivity, lean wiring, extensive additional functions via integrated web server and long-term storage of log messages via microSD card. 

The new SDG fieldbus gateway has a web server and a microSD memory card and therefore offers the following features:

  • Event logs can be evaluated in real time via the web interface.
  • Complete diagnostic data from all safety switchgear devices are displayed in plain text in the browser window
  • Devices, such as interlocks and control panels, can be controlled directly via the web interface
  • The microSD card allows event logs to be exported for evaluation and long-term storage.
  • The configuration of the series connection is stored on the microSD card to enable seamless device replacement in case of error.

In the near future, Schmersal will further expand the functionalities of the SDG fieldbus gateway so that the data of the connected safety switchgear can be transmitted not only via EtherCAT, but also via the common fieldbus protocols PROFINET, EtherNet/IP and Modbus. In addition, networking options will be expanded through connection to IO-Link and OPC UA communication systems.

Another benefit of the SD bus system: by connecting sensors and interlocks with the SD bus in series (an SD Gateway can communicate with up to 31 safety switchgear devices), this safety solution enables extremely lean wiring and reduces costs without sacrificing Performance Level (series connection for applications up to PL e). Setup and commissioning of an SD installation have been designed to be as convenient and straightforward as possible and all devices receive addresses from the Gateway automatically.

Business Partner

K.A. Schmersal GmbH & Co.KG

Möddinghofe 30
42279 Wuppertal

Business Partner contact

most read

13.02.2024 • ProductSecurity

Assa Abloy Openings Studio: Door Specification Software You Can Access From Anywhere

​​​​​​​Specifying, surveying, installing, inspecting and maintaining doors requires a vast amount of information. It is vital that all technical data is trustworthy and timely, a task made harder by the diversity of project stakeholders who are inevitably involved. Now a single software subscription, for PC, tablet and smartphone, can help you marshal all information across the whole life-cycle of a building without hassle — another case where digitalization delivers concrete benefits.

12.03.2024 • ProductSafety

HVI Light Plus for Lightning Protection Applications

When installing bare, uninsulated air-termination conductors on the roof, the separation distance to electrical and metal systems installed under the roof surface must be maintained in accordance with the current lightning protection standard DIN EN 62305-3. Cable installations, pipe systems or metal parts are frequently installed under the roofing in direct proximity to the air-termination system / down conductor, thus posing a proximity issue. The solution is isolated air-termination systems with high-voltage-resistant, insulated down conductors.

12.03.2024 • ProductSafety

DEHNventil ACI M: Standard-compliant Surge Protection in Industry

High demands are placed on the availability of switchgear in, for example, industrial plants, data centres, hospitals and large administrative buildings. This makes surge protection essential. At the same time, replacement of the surge protection module should not influence system availability. The new DEHNventil ACI M TNS 264 FM has no backup fuse and is flexible in terms of its application. In the event of a fault, the protection module is safely disconnected and can be quickly removed from the base part from either side or the front. The touch-safe design allows the protection module to be replaced without system downtime. The ACI technology employed also enables connection cross-sections of just 16 mm2. This facilitates installation and saves time.