General Information on Safety Logic Controllers

General Overview

Safety Logic Controllers manage the tasks within a safety-related application and provide the following functionalities:

  • configuration management

  • parameter management

  • execution of the safety-related application program

NOTE: The safety-related modules must be connected through a Sercos III Bus Interface.

Configuration Management

The configuration management monitors the safety-related configuration of the application in the Safety Logic Controller and provides the following functions:

  • Helps ensure a consistent, safety-related configuration.

  • Verifies the module types, as well as the hardware and firmware versions, with those specified in the Safety Logic Controller application.

  • Verifies the configuration at startup and periodically during operation.

Parameter Management

When replacements are needed, the parameter management system helps to ensure that newly installed modules are assigned correct parameters that apply to the application in the Safety Logic Controller.

The parameter management provides the following functions:

  • Helps to ensure consistent parameters on the safety-related I/O modules.

  • Verifies the parameters with those specified in the Safety Logic Controller application.

  • Independently performs complete parameter downloads.

Memory Key

The memory key on the Safety Logic Controller supports the following features:

  • holds the safety-related application that is loaded at boot-up.

  • storage medium for the application, configuration, and parameters.

  • application transfer of safety-related functions to another Safety Logic Controller.

NOTE: A memory key is required for operation of the Safety Logic Controller. For more information concerning the role of the memory key in the Safety Logic Controller system, refer to Safety Logic Controller Memory Key in the Modicon TM5 Safety Logic Controller TM5CSLC•00FS Hardware Guide.