Excellent PLC
Product Introduction
The Allen Bradley 1785-L40 PLC-5/40 Processor is a high-performance programmable controller designed for complex industrial automation and process control systems. Produced by Rockwell Automation and part of the well-known Allen-Bradley PLC-5 series, this processor delivers increased memory capacity and reliable system performance for demanding control environments.
The processor is equipped with 48K Word SRAM memory, allowing it to handle larger ladder logic programs and extensive control tasks. With a 5 VDC backplane current requirement of 3.0 AMP, the module provides stable operation within PLC-5 rack systems. Designed for industrial reliability, the PLC-5/40 processor is commonly used in manufacturing plants, process control facilities, and large automation systems that require dependable logic processing and system coordination.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Type | PLC Processor Module |
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Series | PLC-5 |
| Processor Model | PLC-5/40 |
| Phase | Phase 1.25 |
| Program Memory | 48K Word SRAM |
| Backplane Current Load | 3.0 Amp |
| Operating Voltage | 5 VDC |
| Controller Architecture | Modular PLC-5 Rack System |
| Programming Method | Ladder Logic |
| Installation Type | Rack Mounted |
| Dimensions | 165 × 51 × 89 mm |
| Weight | 1.42 kg |
Applications
• Large-scale industrial automation systems, coordinating multiple machines and production processes across factory lines.
• Process control environments, managing continuous industrial processes such as chemical, energy, and manufacturing operations.
• Distributed I/O systems, controlling field devices located across different plant areas through PLC-5 communication networks.
• Manufacturing equipment control, ensuring stable sequencing, monitoring, and automation of complex machinery.
• Industrial plant monitoring, collecting operational data and supporting integration with supervisory systems.
• Legacy PLC-5 infrastructure, maintaining and upgrading existing automation systems that rely on PLC-5 architecture.
Advantages
• Large 48K Word memory capacity, enabling more advanced control programs and larger automation logic structures.
• Stable PLC-5 architecture, widely recognized for reliability in industrial automation applications.
• Efficient rack-based system integration, allowing flexible expansion with I/O modules and communication interfaces.
• Reliable power design, with controlled 3.0 Amp backplane current consumption at 5 VDC.
• Industrial-grade durability, designed for continuous operation in demanding production environments.
• Compatibility with PLC-5 communication networks, supporting integration with DH+, Remote I/O, and other industrial communication modules.
