New Mitsubishi Q series programmable automation controller
May 23rd 2006

Mitsubishi Electric has expanded its Q series programmable automation controller platform with a new high-availability, redundant controller for system critical applications.

The new QnPRH is the successor to the Q4AR system. Designed to offer a new level of redundancy for system-critical applications QnPRH is based on dual CPUs, power supplies and bases. It combines ‘out of the box’ system building using standard components with customisation by simple parameter setting. Mitsubishi says the QnPRH has a level of simplicity normally expected of smaller PLCs.

It is configured for total data tracking and extensive physical redundancy so that ultra high system availability can be guaranteed. This is complemented by the ease of use provided by a powerful engineering environment that Mitsubishi has created around the QnPRH.

Jeremy Shinton, Mitsubishi’s Q Series Product Manager, explains how the new range is pushing the control technology envelopes:

“QnPRH is designed to be easy to install. It’s intuitive programming tools and operation allow simple and cost effective design and development of a redundant system project. This is further enhanced by the fact that QnPRH is physically 25 per cent of the size of it’s Q4AR predecessor, reducing space requirements significantly. For integration with existing systems QnPRH is fully compatible with other Qn series hardware platforms.”

In use Shinton says that QnPRH is designed for easy maintenance and simple system reconfiguration. “The components are “hot swappable”, so can be unplugged and replaced without having to shut down the entire system and thus removes major disruption to system availability. There are facilities for troubleshooting, historical data logging, trend analysis functions, alarms and monitors and a full range of interfaces for communications with other systems and various protocols.”

The flexibility inherent in the new QnPRH is such that it can be used in virtually all high-integrity environments, from the conventional continuous industrial processes, to utilities and power generation.

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