.svg?v=180920048278408794651747892223){kind=small}
1747-L20C | Allen-Bradley SLC 500 Fixed Controller (12 DC Inputs, 8 Relay Outputs)
- Regular price
- $1,699.00
- Sale price
- $1,699.00
- Regular price
-
Couldn't load pickup availability
Product Description P/N: 1747-L20C
Description
The Allen-Bradley 1747-L20C is a fixed hardware SLC 500 controller featuring 1K instruction capacity and capacitor-backed RAM memory. It includes twelve 24VDC sinking inputs and eight AC/DC relay outputs, supporting embedded high-speed counting applications. Designed for 120/240 VAC operation, the controller provides a typical scan time of 8 ms per 1K instructions with 4 µs bit execution.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1747-L20C |
| Subcategory | Fixed Controller |
| Power Supply Operating Voltage | 85–265 VAC, 47–63 Hz |
| Line Power | 120–240 VAC |
| User Power Output | 24 VDC, 200 mA |
| Program Memory | 1K capacitor-backed RAM |
| Memory Backup Options | EEPROM or UVPROM |
| Bit Execution Time | 4 µs |
| Typical Scan Time | 8 ms per 1K instructions |
| Discrete Inputs | 12 × 24VDC sinking |
| Discrete Outputs | 8 × AC/DC relay |
| High-Speed Counter | Supported |
| Communication | DH-485 (slave only) |
| Indicators | POWER, PC RUN, CPU FAULT, FORCED I/O, BATTERY LOW |
| Fuse Protection | 1.25 A |
| Inrush Current | 30 A maximum |
| Wiring Connector | 6-pin Phoenix |
| Recommended Cable | Belden 9463 |
| Operating Temperature | 0–60°C |
| Humidity | 5–95%, non-condensing |
| Shock Rating | 30 g |
| Dimensions | 5.72 × 1.37 × 5.15 in |
Information About 1747-L20C
The 1747-L20C is a compact controller within the SLC 500 family designed for applications that require integrated I/O in a single module. It combines fixed input/output channels with a built-in processor, offering a streamlined solution for smaller automation systems. The controller incorporates relay outputs for flexible AC/DC load switching and supports a high-speed counter for precise counting tasks often used in packaging, material handling, and manufacturing processes. Integration is supported through DH-485 communication and the module includes diagnostic indicators for system status, memory, and operational feedback.
Key Features:
- Integrated fixed I/O: Twelve 24VDC sinking inputs and eight relay outputs in a single controller.
- 1K instruction capacity: Capacitor-backed RAM supports program retention and efficient execution.
- High-speed counter support: Suitable for fast counting applications in industrial systems.
- Fast scan performance: Typical 8 ms per 1K instructions with 4 µs bit execution.
- Wide AC input range: Operates from 85–265 VAC, 47–63 Hz with built-in fuse protection.
- Diagnostic LED indicators: POWER, PC RUN, CPU FAULT, FORCED I/O, and BATTERY LOW for quick status monitoring.
- Rugged environmental ratings: Operates from 0–60°C with strong shock and vibration tolerance.
- Communication-ready: Includes DH-485 communication for network integration.
The 1747-L20C delivers the reliability and precision required for compact automation systems that need integrated control and fixed I/O performance.
Description
The Allen-Bradley 1747-L20C is a fixed hardware SLC 500 controller featuring 1K instruction capacity and capacitor-backed RAM memory. It includes twelve 24VDC sinking inputs and eight AC/DC relay outputs, supporting embedded high-speed counting applications. Designed for 120/240 VAC operation, the controller provides a typical scan time of 8 ms per 1K instructions with 4 µs bit execution.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1747-L20C |
| Subcategory | Fixed Controller |
| Power Supply Operating Voltage | 85–265 VAC, 47–63 Hz |
| Line Power | 120–240 VAC |
| User Power Output | 24 VDC, 200 mA |
| Program Memory | 1K capacitor-backed RAM |
| Memory Backup Options | EEPROM or UVPROM |
| Bit Execution Time | 4 µs |
| Typical Scan Time | 8 ms per 1K instructions |
| Discrete Inputs | 12 × 24VDC sinking |
| Discrete Outputs | 8 × AC/DC relay |
| High-Speed Counter | Supported |
| Communication | DH-485 (slave only) |
| Indicators | POWER, PC RUN, CPU FAULT, FORCED I/O, BATTERY LOW |
| Fuse Protection | 1.25 A |
| Inrush Current | 30 A maximum |
| Wiring Connector | 6-pin Phoenix |
| Recommended Cable | Belden 9463 |
| Operating Temperature | 0–60°C |
| Humidity | 5–95%, non-condensing |
| Shock Rating | 30 g |
| Dimensions | 5.72 × 1.37 × 5.15 in |
Information About 1747-L20C
The 1747-L20C is a compact controller within the SLC 500 family designed for applications that require integrated I/O in a single module. It combines fixed input/output channels with a built-in processor, offering a streamlined solution for smaller automation systems. The controller incorporates relay outputs for flexible AC/DC load switching and supports a high-speed counter for precise counting tasks often used in packaging, material handling, and manufacturing processes. Integration is supported through DH-485 communication and the module includes diagnostic indicators for system status, memory, and operational feedback.
Key Features:
- Integrated fixed I/O: Twelve 24VDC sinking inputs and eight relay outputs in a single controller.
- 1K instruction capacity: Capacitor-backed RAM supports program retention and efficient execution.
- High-speed counter support: Suitable for fast counting applications in industrial systems.
- Fast scan performance: Typical 8 ms per 1K instructions with 4 µs bit execution.
- Wide AC input range: Operates from 85–265 VAC, 47–63 Hz with built-in fuse protection.
- Diagnostic LED indicators: POWER, PC RUN, CPU FAULT, FORCED I/O, and BATTERY LOW for quick status monitoring.
- Rugged environmental ratings: Operates from 0–60°C with strong shock and vibration tolerance.
- Communication-ready: Includes DH-485 communication for network integration.
The 1747-L20C delivers the reliability and precision required for compact automation systems that need integrated control and fixed I/O performance.