Product Overview

The Allen-Bradley 1785-L86B is a PLC-5/86 enhanced programmable controller. It runs at high speed and handles complex tasks. Use it in a single 1771 I/O chassis slot. This unit supports 3072 total I/O points. It processes data with 100K words of battery-backed SRAM. The protected memory keeps your programs safe. This model requires 3.3A backplane current at 5V DC. It dissipates 17.3W of heat. The controller works in 0 to 60 °C environments. It weighs 1.42 kg.

Application Scenarios

This controller works well in many industries. Use it for process control in manufacturing. It fits in assembly lines and material handling. The 1785-L86B manages field devices and data. It can handle up to 24 I/O racks. You can connect 93 chassis links. Each link supports 32 remote chassis. This flexibility suits large factory networks. It works with 1771 I/O modules of 8, 16, or 32 points. Use it for discrete control or analog tasks. It handles up to 3072 analog I/O points.

Technical Specifications

Processor type: PLC-5/86. Memory: 100K words. Battery backup keeps data safe. I/O capacity: 3072 total, any mix. Analog I/O max: 3072. Scan time per rack: 10 ms at 57.6 kbits/s. It also scans at 7 ms for 115.2 kbits/s and 3 ms for 230.4 kbits/s. This unit has four communication ports. It supports Data Highway Plus and Remote I/O. Use RS-232-C, RS-422-A, or RS-423-A. It has control coprocessor expansion port. The controller uses Ladder Logic, Sequential, and Structured Text languages. It sets hardware address via 2-slot, 1-slot, or ½-slot modes. It complies with CSA, UL, C-TICK, and CE standards.

Installation & Maintenance Guide

Install the 1785-L86B in a 1771 I/O chassis. Slide it into a single slot. Ensure proper backplane connection. Use the 1785-RC relay cartridge for interfacing. Set the hardware address on the controller. Connect communication cables to the ports. Use shielded cables for best performance. Keep the ambient temperature between 0 and 60 °C. Maintain humidity from 5% to 95% without condensation. For storage, keep temperature from -40 to 85 °C. Clean the unit with a dry cloth. Do not use harsh chemicals. Check connections regularly. Replace battery as needed to protect memory.

Packing List

You will receive one Allen-Bradley 1785-L86B PLC-5/86 controller. The unit comes with a relay cartridge. It does not include memory modules. All items ship in antistatic packaging. We ship via FedEx, UPS, or DHL. Choose your preferred carrier at checkout.