Allen Bradley 1747-L30D 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.

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Product Specifications

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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

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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

FAQ

1. How many I/O channels does the 1747-L30D provide?
   It provides 30 total I/O channels, including 18 digital inputs and 12 digital outputs.

2. Can the 1747-L30D be expanded with additional I/O modules?
   Yes, it includes a 2-slot expansion chassis for optional I/O module installation.

3. Which communication protocols are supported?
   It supports DH-485 and RS-232 communication for programming and network integration.

4. Is the power supply integrated into the controller?
   Yes, it includes a built-in power supply accepting 120/240 VAC at 50/60 Hz.

5. Can the 1747-L30D communicate with other SLC 500 controllers?
   Yes, via DH-485 or RS-232 communication interfaces.

6. What types of devices can be connected to the digital inputs?
   Standard 24V DC industrial sensors, switches, and proximity devices.

7. Is the controller suitable for continuous operation in industrial environments?
   Yes, it is engineered for continuous-duty use under normal industrial conditions.

8. Does it support online monitoring and diagnostics?
   Yes, DH-485 and RS-232 allow for online diagnostics and network monitoring.

9. Is the 1747-L30D suitable for standalone operation?
   Yes, it can function independently or as part of a larger SLC 500 system.

10. Does it require additional adapters for network communication?
    No, communication interfaces are built directly into the controller.

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