Description
Allen-Bradley 1785-L40L PLC-5/40L Standard Processor
The Allen-Bradley 1785-L40L is a high-performance PLC-5 processor with extended local I/O capabilities. This robust controller from Rockwell Automation delivers reliable operation for industrial automation systems. It offers excellent processing power and flexible I/O configuration options.
Technical Specifications
- Brand: Allen-Bradley / Rockwell Automation
- Model: 1785-L40L
- Processor Type: PLC-5/40L Standard
- User Memory: 48 Kilowords
- Max I/O Capacity: 2048 points (any mix)
- Backplane Current: 3.3 Amperes at 5 Volts
- Heat Dissipation: 17 Watts operational
- I/O Scan Time: 0.5ms (extended local), 3-10ms (remote)
- Max Chassis: 61 total I/O chassis
- Extended Local: 16 chassis maximum
- Universal Remote: 32 chassis per I/O link
- Communication Ports: RS-232/422/423, DH+, Remote I/O
- Operating Temperature: 0 to 60°C (32 to 140°F)
- Weight: 3.13 lbs (1.42 kg)
Installation & Setup
- Install in leftmost slot of 1771 I/O chassis
- Uses 1785-RC relay cartridge for device interfacing
- Supports Bulletin 1771, 1794, 1746, and 1791 I/O modules
- Configurable DH+ or Remote I/O communication port
- Voltage isolation tested at 500V between communication ports
Packaging & Shipping
- Includes 1785-L40L processor unit only
- Secure packaging ensures safe delivery
- Worldwide shipping via FedEx, UPS, and DHL
- 12-month warranty against manufacturing defects
Frequently Asked Questions
- What types of I/O modules does this processor support?
It supports 8-point, 16-point, 32-point, and intelligent I/O modules. - Can I use extended local and remote I/O simultaneously?
Yes, the 1785-L40L supports both extended local and remote I/O configurations. - What is the maximum distance for extended local I/O?
Extended local I/O supports distances up to 10000 feet with appropriate adapters. - Does this processor support battery-backed memory?
Yes, it features battery-backed static RAM for program retention. - What programming languages are supported?
It supports ladder logic, sequential function charts, and structured text.
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