Plant and Machine Safety

On December 29, 2009, the new Machinery Directive 2006/42/EC came into force, stipulating important new conditions for machine and plant engineering. The harmonized standards for Machinery Directive 2006/42/EC include the standards EN ISO 13849-1+2 and EN 62061, which govern the functional safety of electrical/electronic/programmable electronic safety-related systems. They also include the standard IEC 61508 for functional safety management that stipulates the necessary requirements for processes, responsibilities and organizational principles.

The CE marking is the external indication for the compliance of a product with the requirements of the Machinery Directive.

With the CE marking, the responsible party declares that:

• The product complies with all of the applicable European Community provisions
• The prescribed conformity evaluation procedures have been carried out

The CE marking enables the unrestricted movement of goods within the European Economic Area.

Functional safety not only contributes to personnel safety but also increases productivity level of systems and machines. This is why we invest in flexible solutions with safetyDRIVE. Our extensive safetyDRIVE portfolio makes it easy to implement safety concepts in control cabinet drive engineering. See for yourself!

• Learn more about our safetyDRIVE functional safety system!

SS1 – Safe Stop 1

This safety function

• triggers the controlled deceleration of the drive; the power supply to the motor is then safely disconnected
• prevents dangerous movement of the drive when it is at a standstill
• corresponds to stop category 1 according to IEC 60204-1

SS2 – Safe Stop 2

This safety function

• triggers the controlled deceleration of the drive; safe standstill monitoring is then initiated
• ensures the complete availability of the drive control functions (motor stays energized)
• corresponds to stop category 2 according to IEC 60204-1

SBC – Safe Brake Control

This safety function

• disconnects the power supply to the brake
• prevents the brake from releasing

SDI – Safe Direction

This safety function

• allows the drive to move in one defined direction of rotation only
• signals an error if the defined direction of rotation is violated, and safely switches off the drive if required

SLS – Safely Limited Speed

This safety function

• monitors the speed and ensures that the defined velocity limit is not exceeded
• signals an error if the speed threshold is exceeded, and safely switches off the drive if required

SOS – Safe Operating Stop

This safety function

• monitors the stop position that has been reached and prevents the drive from leaving the stop position
• ensures the complete availability of the drive control functions
• signals an error if the drive leaves the stop position, and safely switches it off if required

SLA – Safely Limited Acceleration

This safety function

• monitors the speed and ensures that the defined acceleration is not exceeded
• signals an error if the speed threshold is exceeded, and safely switches off the drive if required

SLI – Safely Limited Increment

This safety function

• facilitates a safe jog mode
• signals an error if the jog range is violated, and safely switches off the drive if required

SBA – Safe Brake Actuation

This safety function

• brings a drive movement to a safe standstill mechanically. This procedure is not the standard braking procedure, but rather the braking procedure for emergencies.

SBH – Safe Brake Hold

This safety function

• holds the current position mechanically when it is activated. The drive is already at a standstill when the function is activated.

SAR – Safe Acceleration Range

This safety function

• prevents the drive acceleration from exceeding a specified range
• deactivates the safety function when the permitted acceleration range is exceeded or undercut and triggers an error message

SLP – Safely Limited Position

This safety function

• monitors the drive to ensure that it does not exceed the defined limits
• signals an error if the limits are exceeded, and safely switches off the drive if required

SSM – Safe Speed Monitor

This safety function

• facilitates speed monitoring
• signals the status with no error response

SCA – Safe CAM

This safety function

• facilitates the monitoring of a position range
• signals the status with no error response

SSR – Safe Speed Range

This safety function

• prevents the drive speed from exceeding a specified range
• deactivates the safety function when the permitted speed range is exceeded or undercut and triggers an error message

A wide range of aspects play a role in the safe construction of machines and systems. We provide you with safety components and characteristic safety values in the form of data sheets and a SISTEMA library. This allows for the seamless validation of safety functions. Modular safety service packages certified by TÜV Rheinland complete the range of services we offer.

• Learn more about our safety service packages!

The SISTEMA software wizard assists with evaluating the safety of controllers and drive systems with respect to DIN EN ISO 13849-1. The windows tool simulates the structure of the safety-related parts of a controller based on the so-called intended architectures and calculates reliability values on several detail levels including the achieved performance level (PL).

The latest version of the SISTEMA software wizard is available on the website of the Institute for Occupational Safety and Health of the German Social Accident Insurance: www.dguv.de

SEW-EURODRIVE offers a component library for the SISTEMA software wizard. This library includes the respective MTTF, B10d or PFH values for the components used. The library can be used in SISTEMA version 1.1.6. or later.

Download SISTEMA library

SISTEMA disclaimer (PDF, 26 kB)

We offer you safety drive systems for diverse requirements in a wide range of industries and system structures: for instance, drives in stage technology, welding robots in the automotive industry or gantry robots in the beverage or packing industry