Life cycle analysis for Quantum and ControlLogix platforms

Process control authority Bela Liptak brings in a specialist to answer a reader's question regarding life cycle analysis for the Modicon Quantum and Rockwell ControlLogix platforms.

Ask the ExpertsQUESTION:

I AM trying to do a life cycle analysis for the Modicon Quantum and Rockwell ControlLogix and cannot find the date these two platforms were introduced. Is the Quantum a derivative of the 984? Your help would be appreciated.

Ram Munoz, Maintenance Engineer, Central Arizona Project


THE MODICON Quantum product line was introduced in 1994.  Assuming the nature of the question regarding the Quantum being a derivative of the 984 platform, it is not, although the Quantum will run 984LL without conversion.  It will not run 984LL and IEC 61131-3 logic concurrently.  The Quantum was introduced as a new product built from the ground up incorporating new features such as hot-swap capable I/O. The AB ControlLogix product line was introduced in July 1994 with version 1.81.

Watt Durden, Senior Engineer, Westin Engineering Inc.

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