C6 SAFETY PLC, C6 SAFETY I/O, EtherCAT FSoE Communication

How is machine safety achieved?


How is machine safety achieved? In the past this was resolved with add-on architecture in an application specially designed to meet safety requirements.
With its new components for functional safety technology, KEB now offers the basic principles for highly-integrated machine safety - saving the mechanical engineer space, time and money.

Complete integration of the safety architecture in the automation system is the aim of the new KEB solutions, implemented in the form of a safety PLC - the C6 SAFETY PLC, including master FSoE and secure inputs and outputs in the KEB I/O system as C6 SAFETY I/O for decentralized installations.
The single-source solution is completed by the extension for safety functions in the COMBIVIS Studio 6 engineering tool – offering total project planning of equipment including safety-related elements.

Complete integration of safety functions in the tool ensures:
A software environment that combines parameter-setting and programming of conventional, i.e. non- safety related, as well as safety related, parameters, programs and functions. Also, specific function wizards complete and simplify tasks.

Pre-defined function modules according to PLC Open Safety enable free programming of the application in the safety PLC. Typical tasks such as two-hand control, emergency stop operation, comparison of values or muting can therefore be handled easily with the usual high programming convenience in the latest tried and tested PLC application development environment.
(Typical aids: IntelliSense, auto-integration, declaration and much more besides.)

This results in close interlocking of the FS application and FS I/O data with the functional PLC application and availability of FS data in the standard PLC and vice versa, which enables particularly detailed diagnostics and reduces complexity, for example.

This means you have the ability to calculate current limit values of your selected safety functions (not just those according to 61800-5-2) for the runtime as well and adjust machine runtime to the different application states. In the end you get the maximum out of your machine and you are not restricted by inflexible safety technology.

It is also possible to process exact diagnostics within the functional PLC cycles (status of safety-related I/O) in the standard PLC as well, in the form of a diagnostic message for example: "Door switch 26 not closed“.
Programming of the PLC systems is protected against unauthorised access by a device-specific user management procedure with users and user groups.
This means that standard specifications that are only to be used by duly qualified personnel for setting up and commissioning, are easy to implement.

The granularity of the safety-related input/output module enables you to plan your safety technology precisely to meet your requirements, decentralized as necessary for your machine design.

The safety-related drive functions, the safety PLC and the input/output module meet the SIL3 requirements of IEC 61508 and PLe, in accordance with EN ISO 13849 (PLC: Cat.4, I/O Cat.3, Cat.4 implemented using multiple modules).