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The Allen-Bradley 1747-L30D is a robust PLC from the SLC 500 Series, featuring a compact, fixed hardware package that integrates a processor with 1K instruction capacity, a power supply, and a defined number of I/O ports. It is designed for reliable operation in environments with temperatures ranging from 0 to 60°C and offers I/O electrical-optical isolation rated at 150V AC. This controller utilizes a capacitor-backed RAM with optional EEPROM and UVPROM for memory backup, supporting efficient operation with a nominal input current of 20mA at 24V DC. With its high-speed counter functionality and rapid scan times of 8 ms per K-instruction, the 1747-L30D is an ideal solution for demanding industrial applications requiring consistent performance and quick response times.