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.
