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1747-L20A | Allen-Bradley SLC 500 Fixed Controller, 12 AC Inputs, 8 Relay Outputs
- Regular price
- $1,287.00
- Sale price
- $1,287.00
- Regular price
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Product Description P/N: 1747-L20A
Description
The Allen-Bradley 1747-L20A is a fixed-style SLC 500 controller designed for foundational automation tasks in industrial environments. It provides 1K words of memory and supports DH-485 communication for reliable data transfer within control networks. Featuring 12 AC inputs and 8 relay outputs, the unit operates on 120/240 VAC and is suitable for applications requiring compact, integrated control capability.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley / Rockwell Automation |
| Category | Controller |
| Part Number | 1747-L20A |
| Subcategory | Fixed Controller |
| Series | SLC 500 |
| Bulletin | 1747 |
| Power Supply | 120–240 V AC |
| I/O Points | 20 total |
| Digital Inputs | 12 × 120 V AC |
| Digital Outputs | 8 relay outputs |
| Output Type | AC/DC relay |
| Memory Capacity | 1K words |
| Communication Port | DH-485 |
| Software Support | SLC 500 A.I. Series Programming Software |
| Status Indicators | POWER, CPU FAULT, PC RUN, BATTERY LOW, FORCED I/O |
| Product Type | Fixed hardware controller |
| Product Line | SLC 500 |
| Operating Voltage Range | 120/240 V AC |
| Use Case | Small automation systems, discrete control |
Information About 1747-L20A
The 1747-L20A is part of the Allen-Bradley SLC 500 family, a proven series of controllers widely used in small to mid-size automation systems. Its fixed-format construction incorporates built-in I/O and communication capabilities, eliminating the need for modular expansion in basic applications. The controller integrates seamlessly with DH-485 networks for device-level communication and supports standard SLC programming tools. Typical use cases include discrete control, machine sequencing, and monitoring tasks where stable operation, AC input handling, and relay output capability are essential.
Key Features:
- SLC 500 fixed controller: Combines CPU and built-in I/O in a single compact unit.
- 20 total I/O points: Includes 12 AC inputs and 8 relay outputs for basic automation.
- 1K words memory: Supports small-scale logic programs and data storage.
- DH-485 communication: Provides network connectivity for panel or line-level systems.
- 120/240 VAC power: Compatible with common industrial supply voltages.
- Integrated status indicators: Front-panel LEDs enable quick diagnostics and monitoring.
- Relay output type: Suitable for switching AC or DC loads without external interface modules.
- SLC programming compatibility: Works with SLC 500 A.I. Series software for configuration.
The 1747-L20A delivers the reliability and precision required for essential machine control and monitoring applications.
Description
The Allen-Bradley 1747-L20A is a fixed-style SLC 500 controller designed for foundational automation tasks in industrial environments. It provides 1K words of memory and supports DH-485 communication for reliable data transfer within control networks. Featuring 12 AC inputs and 8 relay outputs, the unit operates on 120/240 VAC and is suitable for applications requiring compact, integrated control capability.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley / Rockwell Automation |
| Category | Controller |
| Part Number | 1747-L20A |
| Subcategory | Fixed Controller |
| Series | SLC 500 |
| Bulletin | 1747 |
| Power Supply | 120–240 V AC |
| I/O Points | 20 total |
| Digital Inputs | 12 × 120 V AC |
| Digital Outputs | 8 relay outputs |
| Output Type | AC/DC relay |
| Memory Capacity | 1K words |
| Communication Port | DH-485 |
| Software Support | SLC 500 A.I. Series Programming Software |
| Status Indicators | POWER, CPU FAULT, PC RUN, BATTERY LOW, FORCED I/O |
| Product Type | Fixed hardware controller |
| Product Line | SLC 500 |
| Operating Voltage Range | 120/240 V AC |
| Use Case | Small automation systems, discrete control |
Information About 1747-L20A
The 1747-L20A is part of the Allen-Bradley SLC 500 family, a proven series of controllers widely used in small to mid-size automation systems. Its fixed-format construction incorporates built-in I/O and communication capabilities, eliminating the need for modular expansion in basic applications. The controller integrates seamlessly with DH-485 networks for device-level communication and supports standard SLC programming tools. Typical use cases include discrete control, machine sequencing, and monitoring tasks where stable operation, AC input handling, and relay output capability are essential.
Key Features:
- SLC 500 fixed controller: Combines CPU and built-in I/O in a single compact unit.
- 20 total I/O points: Includes 12 AC inputs and 8 relay outputs for basic automation.
- 1K words memory: Supports small-scale logic programs and data storage.
- DH-485 communication: Provides network connectivity for panel or line-level systems.
- 120/240 VAC power: Compatible with common industrial supply voltages.
- Integrated status indicators: Front-panel LEDs enable quick diagnostics and monitoring.
- Relay output type: Suitable for switching AC or DC loads without external interface modules.
- SLC programming compatibility: Works with SLC 500 A.I. Series software for configuration.
The 1747-L20A delivers the reliability and precision required for essential machine control and monitoring applications.