Excellent PLC
Product Introduction
The Allen Bradley 1785-LT3 PLC-5/12 Processor is an entry- to mid-level programmable logic controller designed for small-scale industrial automation applications. Part of the PLC-5 family, this processor offers reliable control for simple to moderately complex systems, with support for both digital and analog I/O via integrated network channels.
The PLC-5/12 features 6 K words of SRAM memory, sufficient for compact control programs and small data tables. It includes one Data Highway Plus (DH+) channel and one Remote I/O (RIO) channel, allowing communication with remote racks, I/O modules, and other PLC-5 devices for distributed control applications.
With a compact form factor designed for PLC-5 racks, the processor draws 2.5 A at 5 VDC from the backplane, ensuring stable and energy-efficient operation. It is widely used in small manufacturing lines, machine control, and process automation tasks where reliable entry-level PLC-5 control is needed.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Name | PLC Processor Module |
| Manufacturer | Allen Bradley |
| Model Number | 1785-LT3 |
| Controller Series | PLC-5 |
| Processor Type | PLC-5/12 Processor |
| User Memory | 6 K Word SRAM |
| Communication Channels | 1 DH+ / 1 RIO |
| Backplane Current | 2.5 A at 5 VDC |
| Maximum Total I/O | Entry-level small systems |
| Installation Type | Rack-mounted PLC module |
| System Compatibility | PLC-5 I/O and communication modules |
| Application | Small industrial automation systems |
| Control Capability | Basic PLC-5 logic processing |
| Operating Environment | Industrial automation applications |
| Dimensions | 165 × 51 × 89 mm |
| Weight | 1.337 kg |
Applications
● Small Manufacturing Lines
Controls compact production lines with limited I/O requirements.
● Machine Control
Manages individual machines or subsystems in small-scale industrial systems.
● Process Automation
Suitable for small process automation tasks such as pumps, mixers, or conveyors.
● Distributed I/O Integration
Supports connection to remote I/O racks via DH+ and RIO channels.
● Industrial Equipment Monitoring
Interfaces with sensors and actuators for basic monitoring and control.
● Entry-Level Automation Systems
Provides reliable PLC-5 control for cost-effective small systems.
Advantages
● Compact and Reliable
Small form factor for easy integration into PLC-5 racks with stable industrial operation.
● Integrated Communication
One DH+ and one Remote I/O channel for simple networked control.
● Entry-Level PLC-5 Control
Provides fundamental PLC-5 logic processing for small systems.
● Energy Efficient
Draws only 2.5 A at 5 VDC from the backplane.
● Flexible Integration
Compatible with digital, analog, and communication modules of the PLC-5 family.
● Cost-Effective Solution
Ideal for small automation tasks with limited budget and I/O requirements.
