PLC plays it safe

04 May 2020

A safety module option is now available for Mitsubishi Electric’s MELSEC iQ-R PLC which is said to provide the performance and integrity of a separate safety PLC but without the added cabinet space. 

The iQ-R is suited to use in many demanding, mission-critical applications,  in addition to more conventional process control applications. To deliver safe and robust operation in both low and high-risk applications controllers must address some specific safety requirements. In addition to managing advanced control tasks, the PLC can offer combined safety control to drive functional and process safety. This offers the ability to create applications that are compliant with ISO 13849-1 PL e and IEC 61508 SIL 3 standards.

The combination of process and safety control in a single unit helps machine builders, integrators, and end-users benefit from a scalable control management strategy, while also optimising equipment footprint, reducing wiring requirement and lowering capital investment. These benefits are further enhanced by the option of using a common CC-Link IE Field Gigabit Ethernet network for both process and safety control communications.

Operational control functionality is programmed using a single platform – GX Works3. As a result, it is possible to create and execute integrated process and safety control programmes via a single CPU module, reducing the time and cost associated with setting up two separate controllers.

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