Mitsubishi MELSEC-Q4AR

Q4ARCPU redundant PC system

This system is based on the existing system that was configured with a sequencer CPU, which had been enhanced with the redundancy of a power supply, CPU and network, in pursuit of high reliability. It is also a system that made it possible to accelerate the integer calculation process of the CPU and perform PID control.

  • Redundant PC system
    The system is intended for control applications that require high reliability and is designed for continuous operations without suspending any arithmetic operations, even when a CPU unit, network or power supply fails.
  • Independent system of Q4ARCPU
    Q4ARCPU used for the redundant PC system can also be used as an independent CPU for the QnA series.

*: Production was terminated in September 2008.


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