Siemens 3RK Modular Safety System
The 3RK modular safety system (MSS) is a freely parameterizable modular safety system.
Depending on the external circuit version, safety-related applications up to Performance Level e according to EN ISO 13849-1 or SIL 3 according to IEC 62061 can be realised.
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 localising signals from sensors. Plant downtime can be reduced as the result.
The MSS comprises the following system components:
- Central units
- Expansion modules
- Interface module
- Diagnostics module
- Parameterization software
- Accessories
The central units include:
MSS Basic central unit, which is used wherever multiple safety functions need to be evaluated and the wiring parameterization of safety relays would involve great cost and effort.
It can input entries, trigger outputsand communicate via an interface module with higher-level control systems. The central unit processes the entire safety programme of an application.
The MSS Basic is the smallest expansion level, and is able to function as a stand-able application, without option expansion modules installed.
The MSS Advanced is the next higher expansion and integrates expanded functionalities and project data volume in addition to the AS-Interface.
The service-proven insulation piercing method of AS-Interface enables very fast connection of AS-I outputs, Emergency stop command devices, position switches or light curtains.
The MSS ASIsafe basic and extended central units detect safe sensor technology on the AS-I bus and switches actuators off in a safety-related manner via a configurable safety logic.
It has greater project data volume and a wider range of functions than other ranges.
The expansion modules the system can be flexibly adapted to the required safety applications, and the actuated sensors or faults are indicated directly on the diagnostics display. The fault is diagnosed in plain text by the detail alarm message, and no programming is required.
The DP interface module transfers diagnostic and device status data to a higher level PROFIBUS network to facilitate the display on a HMI, and using the SIRIUS Safety ES graphical parameterization tool is very easy to create the safety functions as well as their logical links on the PC.
The benefits of the 3RK MSS are …
- 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
- Modular hardware configuration
- Parameterization by means of software instead of wiring
- Remove terminals for greater plant availability
- Distributed detection and disconnection of actuators through AS-Interface
- Up to 50 dual channel enabling circuits per system
If you want to know any more about the Siemens 3RK Modular Safety System, please call 01244 288138 or email info@dbicontrol.co.uk.
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