Design Note #88
Modern industrial controller design must meet exacting standards. Large process control cannot tolerate interruption, loss of service, or anomalous behavior. Redundant power systems, redundant memory systems, and redundant communication systems all serve to ensure continuity. Based on the powerful SPEAr1310 dual core Arm Cortex-A9 processor, OTEC’s latest controller design meets the demanding requirements of today’s world-class industrial needs.
Dual 24 volt rails provide primary power. In the event of power rail interruption, analog monitoring circuitry constantly report power status and perform automatic rail switch-over. Efficient push-pull power design keeps peak voltages well below insulation break over requirements. SPEAr1310 operation with all peripherals operating requires less than six watts total operating power.
IO expansion, external bus expansion and dual DMA HDLC controllers pack a physically small design with an extraordinary feature set. Altera FPGAs provide a rich and mutable peripheral set. Programmable at system startup, FPGA configuration changes are accomplished on the fly. System-wide functionality upgrades are easily accomplished with software service packs.
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