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The Allen-Bradley 1747-L30A is a fixed hardware controller from the SLC 500 Series, designed for versatile industrial automation tasks. It operates within a wide voltage range of 85-265V AC at 47-63 Hz, supporting 30 I/O points with 18 inputs at 120V AC and 12 AC/DC relay outputs. This controller includes essential features like a power supply and processor within a compact design, with an optional two-slot expansion capability to increase I/O capacity up to 64 points. Its typical scan time is efficient at 8 milliseconds per 1K instruction, and it offers robust memory options with capacitor-backed RAM and additional EEPROM or UVPROM backups. With DH-485 protocol for communication, it ensures reliable data handling, while the system is housed in a durable setup adhering to stringent grounding and ambient operating conditions.