Beckhoff TwinSAFE logic FB User Manual

Function blocks
78 Function blocks for TwinSAFE logic components
3.8 The function block MUTING
3.8.1 Functional description
FB MUTING is used to realize specified suppression of the protective function, e.g. for transporting
material into the protection zone. The function block output remains enabled despite the fact that the
connected sensor (e.g. light curtain) is interrupted. The process is monitored with the aid of muting
sensors. The muting inputs are used to verify that they are operated in a defined order.
Muting can be enabled via the Enable input. If the input is logic 0 an interruption of the protective device
results in immediate shutdown of the FB output. If the input is logical 1 the only takes place if the muting
sequence is violated.
The 'Sequential Inputs' checkbox can be used to specify whether 2 inputs are checked in parallel or
whether each input is checked sequentially.
A filter time up to 500 ms can be set for the muting inputs in order to prevent bouncing of the muting
signals and therefore violation of the muting sequence.
The maximum duration of the muting process can be monitored via the Max. MutingTime parameter. The
muting process starts with a logic 1 signal of the first muting input and ends with the logic 0 signal of the
last muting input. The value can be configured to a maximum of 10 minutes. The value 0 disables the
monitoring.
The 'MutingActive' output of the function block is set during the muting process.
The protective device (AOPD - Active Opto-electronic Protection Device, for example a light curtain), is
connected at the OSSDIn(x) inputs.
Feedback signals can be connected at the EDM inputs. In the default setting the inputs are disabled.
Direct outputs are connected via the 'MuteOut' button, outputs that are delayed by up to 30 seconds via
the 'MuteDelOut' button.
Figure 3-31: MUTING function block

Beckhoff TwinSAFE logic FB Specifications

General

Brand	Beckhoff
Model	TwinSAFE logic FB
Category	Industrial Electrical
Language	English

Summary

1 Foreword

Notes on the Documentation

Information regarding the documentation's target audience, origin, currentness, and symbols used.

Safety Instructions

Guidance on safety instructions, delivery state, operator diligence, and explanation of notes.

2 System Description

TwinSAFE Logic Terminals and Connections

Details on TwinSAFE logic terminals, groups, connections, and configuration. Includes diagnosis overview.

System Diagnosis

Information on diagnosing TwinSAFE system components, including diagrams for TwinCAT 2 and TwinCAT 3.

3 Function Blocks

The Function Block AND

Functional description, signal details, diagnostic info, and TwinCAT configuration for the AND logic block.

The Function Block OR

Functional description, signal details, diagnostic info, and TwinCAT configuration for the OR logic block.

The Function Block OPMODE

Description of OPMODE function block for operation mode selection and restart behavior.

The Function Block ESTOP

Details on ESTOP function block: description, signals, configuration, restart behavior, and extensions.

The Function Block MUTING

Description of MUTING block, signals, configuration, examples, and extensions for EL/EJ6910.

The Function Block TON

Functional description, signal details, diagnostic info, and TwinCAT configuration for the TON delay timer.

The Function Block TOF

Functional description, signal details, diagnostic info, and TwinCAT configuration for the TOF delay timer.

The Function Block ADD

Description of ADD block for analog addition: signals, diagnostics, and TwinCAT configuration.

The Function Block SUB

Description of SUB block for analog subtraction: signals, diagnostics, and TwinCAT configuration.

The Function Block COMPARE

Description of COMPARE block for analog input comparison, including architectures, signals, and config.

The Function Block LIMIT

Description of LIMIT block for checking analog input values against Min/Max limits, including signals and config.

The Function Block COUNTER

Description of COUNTER block for up/down counting: signals, diagnostics, and TwinCAT configuration.

The Function Block CAMMONITOR

Description of CAMMONITOR block for electronic cam control: modes, inputs, outputs, parameters, and diagnostics.

4 Appendix

Beckhoff Support and Service

Information on contacting Beckhoff for technical support, system solutions, and after-sales service.

Beckhoff Headquarters Information

Contact details, phone, fax, email, and web address for Beckhoff Automation GmbH & Co. KG.