Allen Bradley 1747-L30D SLC 500 I/O Processor Unit

Product Introduction

The Allen-Bradley 1747-L30D I/O Processor Unit is a fixed I/O controller within the SLC 500 family, designed for medium-scale industrial automation applications that require integrated processing, discrete I/O, and flexible communication options. This controller combines a CPU, fixed I/O, and a small expansion chassis into a single compact unit, simplifying installation and reducing panel space requirements.

The 1747-L30D provides 30 total I/O channels, including 18 digital inputs and 12 digital outputs, supporting direct connection to field devices. It also includes a 2-slot expansion chassis, allowing for optional additional I/O modules if system needs grow. Communication is supported via DH-485 and RS-232, providing network connectivity for programming, diagnostics, and peer-to-peer communication with other SLC 500 controllers.

With integrated power supply accepting 120/240 VAC at 50/60 Hz, the 1747-L30D is engineered for reliable, continuous industrial operation. Its all-in-one design ensures deterministic performance, simplified wiring, and compatibility with existing SLC 500 programming tools, making it suitable for standalone or networked control applications.

Product Specifications

Applications

• Medium-scale machine control, including packaging, conveyor, and assembly systems

• Industrial process automation with integrated digital I/O

• Standalone control stations with optional future expansion using 2-slot chassis

• Networked SLC 500 systems, supporting DH-485 and RS-232 communication

• Retrofit and upgrade projects for SLC 500 installations needing fixed I/O controllers

Advantages

• Integrated fixed I/O and CPU reduce panel wiring and space requirements

• Expandable via 2-slot chassis, allowing optional additional modules without replacing the controller

• Dual communication support (DH-485 / RS-232) enables flexible connectivity and diagnostics

• Reliable industrial performance, engineered for continuous operation

• Simplified installation and maintenance, all-in-one design minimizes complexity

• Compatibility with existing SLC 500 programming software, facilitating upgrades and maintenance

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