Modular operating mode and access permission system

22 June 2020

A modular operating mode selection and access permission system from Pilz is said to offer flexibility when implementing safety and security on equipment and processes.

The PITmode fusion consists of a reader unit with RFID technology and an integrated web server, and an safe evaluation unit (SEU). Its modular design enables the system to be integrated individually into the design of existing control consoles. Existing pushbuttons can be used, enabling better operation for the user. PITmode devices are used on plant and machinery in which users switch between different control sequences and operating modes.

Authorised users have a coded RFID transponder key that provides the necessary access rights for performing the tasks required of them. Up to five safe operating modes can be defined – such as automatic mode, manual intervention under restricted conditions, or service mode. The key is inserted into the control console, the SEU detects the specified operating mode, and the PITreader ensures functionally safe switching. Accidents, misuse and manipulation are therefore prevented. Users benefit from higher availability of their machines.

The system can also be used to implement a range of functions beyond access permission and operation mode selection. It may be a simple enable that replaces a key switch at the control console, or access permission for machine subfunctions. Further, a complex hierarchical permission matrix with various groups and permissions can be created in the free user area. These functions are bundled on the RFID key, replacing additional mechanical keys or access cards, which makes management of access privileges an easier task.

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