Allen-Bradley 1785-LT PLC5 Classic Programmable Controller

Manufacturer: Allen-Bradley
Product No.: 1785-LT
Condition：in Stock
Product Type: 1785-LT PLC5 Classic Programmable Controller
Product Origin: USA
Payment:T/T, Western Union
Weight: 1000g
Shipping port: Shanghai/Yiwu/Shenzhen
Warranty: 12 months

Quantity

Product Overview

The Allen-Bradley 1785-LT is a PLC5 Classic Programmable Controller designed for high-performance industrial automation. It supports both local and remote I/O racks, providing flexible I/O configurations. With embedded RAM and expandable memory modules, it ensures reliable processing for complex control applications. The controller includes DH+ communication and RS-232/422/423 ports for seamless integration.

Technical Specifications

Parameter	Specification
Manufacturer / Brand	Rockwell Automation / Allen-Bradley
Part Number / Catalog No.	1785-LT
Module Type	Processor
Supported Local I/O	Up to 4 Racks (1 resident rack)
Supported Remote I/O	Up to 3 Remote I/O racks
I/O Capacity	512 inputs & 512 outputs using 16 or 32-pt modules
Embedded RAM	6K Words; expandable up to 14K Words
Memory Modules	4K RAM (1785-MR), 8K RAM (1785-MS), 8K EEPROM (1785-MJ)
Battery	1770-XY
Program Scan Time	2 ms/K words (bit logic); 8 ms/K words (typical)
Built-in Communication	One standalone scanner (local & remote I/O), One DH+
Hardware Addressing	2-slot, 1-slot, ½ slot
Location in Chassis	1771-I/O chassis, left-most slot
Keying	Between 40–42; 54–56
Max Total I/O	3072 (any mix) or 3072 in + 3072 out
Analog I/O	512 (Max 3072)
DH+ Channel	Yes
Remote I/O Channel	Yes
Number of Words	6 Kilowords SRAM (expands to 14 Kilowords)
I/O Scan Time per Rack	10 ms at 57.6 kbits/s, 7 ms at 115.2 kbits/s, 3 ms at 230.4 kbits/s
Max I/O Chassis Total	93
Max I/O Chassis Extended Local	0
Max I/O Chassis Universal Remote	32 Max per I/O Link
RS-232-C / 422-A / 423-A Ports	1

Key Features

High-performance PLC5 controller supporting complex industrial automation.
Flexible local and remote I/O support with up to 512 inputs and outputs.
Embedded 6K RAM expandable to 14K Words for large programs.
Fast program scan times: 2 ms per K words for bit logic.
Integrated DH+ and RS-232/422/423 ports for network communication.
Compatible with 1771-I/O chassis for easy installation and expansion.
Supports analog I/O, up to 3072 total channels, for versatile process control.

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1785-LT PLC5 Classic Programmable Controller Allen-Bradley

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