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The GE-Emerson IC695CMU310 PACSystems Rx3i Redundancy CPU allows redundant controllers to exchange operating data by way of one or two dedicated Ethernet LANs. Each Rx3i system in a Max-ON application consists of:
The Max-ON CPU is compatible with a wide range of Rx3i and Series 90-30 modules, backplanes, and other equipment.
Max-ON redundancy applications include fuel loading, standby power generation, boiler systems, and manufacturing systems. The proprietary Max-ON software provides subroutines for synchronization of variables, program equivalence testing, selection of master CPU, and diagnostics. When using Max-ON redundancy, transfer of control from the Master to the Backup can take two to three CPU logic scans. I/O states are maintained during the transfer. Max-ON redundancy is not suitable for SIL 2 or 3 applications.
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