Safety FBs in PLCopen_SF_V2_00 Library

Dieses Thema enthält die folgenden Abschnitte:

Help version 1.0 / Issue date: 2024.03

The safety-related function blocks described here are solely intended for use in the PLCnext Engineer software for creating safety-related code for suitable Sicherheitssteuerungs. You can only meet your safety-relevant tasks within the safety-related control system if they were integrated into the execution process in a correct and functionally safe manner.

WARNUNG

Non-conformance to safety function requirements

Verify that the safety-related function blocks are only used in accordance with the instructions given in this documentation.

Validate the overall safety-related function and thoroughly test the application.

Basic application examples can be found in the description for the relevant function block in the section titled "Application examples".

The safety-related function blocks are integrated into the graphical programming interface of the PLCnext Engineer software. Each function block supports a specific safety-related function for creating a safety-related application code.

The area of responsibility of the function block manufacturer in terms of the function of a safety-related function block ends at the user interface of the function block, which is represented by its inputs and outputs (formal parameters).

In order to fully execute a safety-related function, it is your responsibility to connect the inputs and outputs of the safety-related function blocks in PLCnext Engineer

with your safety logic and
with the single-channel or two-channel sensors and actuators connected within your safety logic.

WARNUNG

Non-conformance to safety function requirements

In order to define the safety integrity level (SIL) or performance level for the complete safety-related function, you must take into consideration all the components involved in the execution of this safety-related function (sensors, actuators, wiring, etc.).

In order to use a safety-related function block/function according to the required safety integrity level as defined by IEC 61508, EN ISO 13849-1, or EN 62061, you must take into consideration the entire path of the safety-related function (all components that are interconnected, as well as all defining logical, configuration and parameter components, to form the safety-related function, such as Sicherheitssteuerung, I/O modules, device parameterization, wiring, sensors, actuators, single-channel or two-channel operation, etc.), starting from the function block formal parameters.

Validate the entire safety-related function before placing the equipment into operation.

Please read the information and instructions provided carefully and comply with them to ensure you are in a position to use the safety-related function blocks described below in a safety-related manner. The following notes provide preliminary information on how to use the description provided.

Validity of this documentation

This documentation is only valid for the specified versions of the individual safety-related function blocks.

Using safety-related function blocks

The safety-related function blocks described in this documentation may only be used in conjunction with the PLCnext Engineer software.

Standards and directives

WARNUNG

Non-conformance to safety function requirements

Verify that your safety-related application implements all additional requirements resulting from applicable directives and standards in order to meet the required safety integrity requirements.

Qualified personnel

When using a Safety PLC and PLCnext Engineer with the safety-related function blocks described here, the following tasks must only be performed by qualified personnel:

Planning, programming, parameterization
Installation, start-up, servicing
Maintenance, decommissioning.

This documentation is therefore aimed at:

Qualified personnel who plan and design safety equipment for machines and systems and are familiar with regulations governing safety in the workplace and accident prevention.
Qualified personnel who install and operate safety equipment in machines and systems.

Within the context of the safety notes in this documentation, qualified personnel are persons who, because of their education, experience and instruction, and their knowledge of relevant standards, regulations, accident prevention regulations, and service conditions, have been authorized to carry out any required operations, and who are able to recognize and avoid any possible dangers.