SIRIUS 3RK3 Modular Safety System

SIRIUS 3RK3 Modular Safety System

The 3RK3 Modular Safety System (MSS) is a freely configurable modular safety relay. Depending on the external circuit version, safety-related applications up to SIL 3 according to IEC 62061 or Performance Level e according to EN ISO 13849-1 can be realized.

The modular safety relay enables the interconnection of several safety applications.

The comprehensive error and status diagnostics provides the possibility of finding errors in the system and localizing signals from sensors. Plant downtimes can be reduced as a result.

The MSS comprises the following system components:

• Central units
• Expansion modules
• Interface modules
• Diagnostics modules
• Parameterization software
• Accessories

Central units

MSS Basic

The 3RK3 Basic central unit is used wherever several safety functions need to be evaluated and the wiring parameterization of safety relays would involve significant cost and effort. It can input entries, trigger outputs and communicate via an interface module with higher-level control systems. An application's entire safety program is processed in the central unit. The 3RK3 Basic central unit, as the smallest expansion level, is able to function as a standalone application, without the optional expansion modules installed.

MSS Advanced

The 3RK3 Advanced central unit is the next higher expansion of the Basic central unit for AS-i safety monitor functionality. In addition to having a larger volume of project data and scope of functionality it can be integrated in AS-Interface and therefore make use of the many different possibilities offered by this bus system. The function can optionally be activated in the central unit.

The service-proven insulation piercing method of AS-Interface enables not only the distributed expansion of the project data volume using safe AS-i outputs, safe AS-i sensors and other MSS Advanced or safety monitors (fail-safe cross traffic) but also a highly flexible adaptation of the application, e.g. very fast connection of AS-i outputs, EMERGENCY STOP command devices, position switches with and without tumbler, or light curtains.

Safety-oriented tripping using MSS or by distributed means using safe AS-i outputs, as well as the formation of switch-off groups, are extremely easy to implement. The same applies for any subsequent modifications. They are now possible by simply readdressing, meaning that rewiring is no longer necessary.

The AS-i Bus is connected directly at the central unit.

MSS ASIsafe

The MSS ASIsafe basic and MSS ASIsafe extended central units are a logical development of the AS-i safety monitors based on the 3RK3 Modular Safety System.

Like MSS Advanced, MSS ASIsafe detects – in a comparable way to the safety monitors – safe sensor technology on the AS-i bus and switches actuators off in a safety-related manner via a configurable safety logic. It stands out by virtue of its greater project data volume, wider range of functions and the possibility of increasing the integrated I/O project data volume by means of expansion modules from the MSS system family. In this case the range of functions, such as the number and type of the logic elements that can be interconnected, is equivalent to that of MSS Advanced.

Expansion modules

With the optional expansion modules, both safety-related and standard, the system is flexibly adapted to the required safety applications.

Interface modules

Interface modules are used for transferring diagnostics data and device status data to a higher-level controller, e.g. for purposes of visualization using HMI. Both PROFIBUS and PROFINET modules are available to this end. When using the Basic central unit, 32-bit cyclic data can be exchanged with the control system. If an Advanced/ASIsafe central unit is used, the number is doubled to 64-bit cyclic data. In acyclic mode, both central units can call up diagnostics data.

Diagnostics modules

Actuated sensors or faults, e.g. cross-circuit, are indicated directly on the diagnostics display. The fault is diagnosed directly in plain text by the detailed alarm message. The device is fully functional upon delivery. No programming is required.

Parameterization software

Using the SIRIUS Safety ES graphical parameterization tool, it is very easy to create the safety functions as well as their logical links on the PC. You can define disconnection ranges, ON-delays, OFF-delays and other dependencies for example.

SIRIUS Safety ES also offers comprehensive functions for diagnostics and commissioning. Documentation of the MSS hardware layout and the parameterizable logic is drawn up automatically.

System design of MSS with Basic central unit

System design of MSS with Advanced central unit

System design of MSS as a combination of various central units with AS-Interface

Communication

✓ Available

-- Not available

Article number schemes

Note:

The article number schemes show an overview of product versions for better understanding of the logic behind the article numbers.

For your orders, please use the article numbers quoted in the selection and ordering data.

• More functionality and flexibility through freely configurable safety logic
• Suitable for all safety applications because of its compliance with the highest safety requirements in production automation
• Suitable for use all over the world through compliance with all product-relevant, globally established certifications
• Modular hardware configuration
• Parameterization by means of software instead of wiring
• Removable terminals for greater plant availability
• Distributed detection of sensors and disconnection of actuators through AS-Interface
• All logic functions can also be used for AS-Interface, e.g. muting, protective door with tumbler
• Up to 12 independent safe switch-off groups on the AS-i bus
• Clearly expandable project data volume facilitated by AS-Interface
• Up to 50 dual-channel enabling circuits per system

Communication via PROFIBUS/PROFINET

The 3RK3 Modular Safety System can be connected to PROFINET or PROFIBUS through communication modules and exchange data with higher-level control systems.

The MSS supports among other things:

• Cyclic and acyclic data (data records)
• Exchange of 32-bit cyclic data with MSS Basic or 64-bit cyclic data with MSS Advanced/MSS ASIsafe
• Diagnostics using data record invocations
• Access with Safety ES via fieldbus

AS-Interface communication

Using the Advanced and ASIsafe "basic" and "extended" central units, the 3RK3 Modular Safety System can be integrated in AS-Interface.

• MSS can read and evaluate the I/O data of up to 31 AS-i modules.
• Up to 12 safe output signals per MSS can be placed on the AS-i bus for switching safe AS-i output modules or for fail-safe cross traffic between multiple MSS stations.
• Safe cross traffic between multiple MSS stations or between one MSS and AS-i safety monitors
• Standard signals, e.g. for acknowledgment, can also be output on the AS-i bus

Integration of the MSS into AS-Interface

Notes:

MSS with communication function, see 3RK31 central units

For more information on AS-Interface with ASIsafe, see also Industrial Communication.

For more information on SIRIUS Safety ES, see also Parameterization, Configuration and Visualization with SIRIUS.

The 3RK3 Modular Safety System can be used for all safety-related requirements in the manufacturing industry and offers the following safety functions:

✓ Possible

-- Not possible