Process Control & Redundant System

Process control you can count on.

A platform to build on

The strength of System Q’s automation platform really comes into its own in traditional specialist industries. The unique flexibility of proven off-the-shelf control components such as I/O and communication devices, teamed with dedicated special devices like process CPUs, assures high functionality, ease of use and targeted control – all within budget.

Two worlds meet

Our dedicated System Q process CPUs build on the already high functionality of Mitsubishi Electric advanced PLC CPUs. This powerful combination of sequential control overlaid with dedicated process instructions gives users a hybrid control solution with the best of both worlds.

This is complemented in turn by a range of dedicated channel-isolated and high resolution analogue modules. Here, too, a combination of specialist and standard modules provides the basis for practical and flexible solutions.

High system availability can be maintained through various means, including redundant process CPUs, stand-by network masters, and redundant network configurations, as well as by wire-break detection and a “hot-swap” capability that allows modules to be replaced during live operation.

Programming can be implemented using a wide range of tools such as IEC1131.3 compliant software and the process-dedicated PX Developer.

Process CPUs

System Q’s Process CPUs bring the benefits of standard System Q technology into the process environment, reducing both implementation and long-term running costs. These powerful processors combine standard PLC control with 52 dedicated process control functions, including loop controls with two degrees of freedom (DOF) and high-speed PID control.

Redundant CPUs

Mitsubishi Electric dual-redundant CPUs bring an additional layer of fault tolerance to the control of a whole system. This results in high reliability: if the main CPU, power supply or base unit fails, a secondary system starts immediately (within 21 ms) from the same control point.

For users this has two major benefits: no operational damage due to a single system failure, and production that continues seamlessly.

High reliability systems

The System Q automation platform can also be applied to other areas requiring high reliability, e.g. standby network masters, redundant fieldbus (CC-Link) and redundant power supplies for remote I/O stations.

In addition, selected analogue and temperature control units have a wirebreak detection feature enabling them to determine the difference between an actual signal and one that has been lost due to external system damage.