ALLEN BRADLEY 1785 CPU

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ALLEN BRADLEY 1785 CPU Specification

Connector Type
Edge card connector for PLC chassis slot

Cooling Method
Passive cooling, air convection

Operating Temperature
0C to 60C

Working Temperature
0C to 60C

Power Supply
Powered via PLC-5 chassis backplane

Features
Hot swapping capability, Onboard diagnostics, Expandable memory options, High-speed task execution

Noise Level
Low, suitable for control rooms

Application
PLC-5 Programmable Logic Controller for Industrial Automation

Product Type
Programmable Controller CPU

Input Voltage
5V DC (Backplane) - Power supplied by PLC chassis

Voltage Protection
Overvoltage and reverse voltage protection via chassis power supply

Efficiency
High processing efficiency for industrial automation

Material
Industrial grade plastic and metal components

Line Regulation
Regulated by chassis power supply

Storage Temperature
-40C to 85C

Weight
Approx. 2 kg (varies by model)

Mounting Type
Rack-mounted, PLC-5 chassis slot

Dimensions
Approx. 340 x 138 x 132 mm (varies by model)

Firmware Upgrade
Field upgradeable firmware

Instruction Set
Relay ladder logic, block transfer, sequencer, math, PID control

Memory Capacity
Varies by CPU model; up to 64K words

Redundancy Support
Supported in select models

Processor Options
Multiple models (e.g., 1785-L20B, 1785-L40E, 1785-L60L, 1785-L80E)

Communication Ports
DH+, Ethernet, Remote I/O, RS-232C (model dependent)

Compatible Chassis
Allen-Bradley PLC-5 Series Chassis

About ALLEN BRADLEY 1785 CPU

ALLEN BRADLEY 1785 CPU 1785-L20B D

Versatile Processor Options

Choose from a range of ALLEN BRADLEY 1785 CPU models to best suit your industrial applications needs. Options like 1785-L20B, 1785-L40E, 1785-L60L, and 1785-L80E offer scalable memory and processing power. This flexibility supports everything from simple control tasks to complex automation processes. Adapt your system with ease, thanks to field-upgradeable firmware and expandability.

Industrial-Grade Reliability

Built with robust plastic and metal components, the 1785 CPU thrives in harsh environments. It features advanced voltage protection and operates within a wide temperature range (0C to 60C). The rack-mounted, passive-cooled design ensures efficient performance while maintaining low noise levels, making it suitable for control rooms and industrial sites alike.

Efficient Communication and Diagnostics

Multiple communication ports, including DH+, Ethernet, Remote I/O, and RS-232C, make integration seamless with various network topologies. Onboard diagnostics and hot swapping capabilities increase uptime and simplify maintenance. Benefit from high-speed task execution and reliable data transfer for demanding automation operations.

FAQs of ALLEN BRADLEY 1785 CPU:

Q: How do I select the appropriate ALLEN BRADLEY 1785 CPU model for my application?

A: Selection depends on your desired processing power, memory requirements, and available communication ports. Models such as 1785-L20B, 1785-L40E, 1785-L60L, and 1785-L80E offer varying memory capacity and port options. Assess your automation complexity and required redundancy to identify the best fit.

Q: What is the process for mounting the 1785 CPU in my PLC-5 chassis?

A: The 1785 CPU is designed to be rack-mounted using an edge card connector. Simply insert the CPU into a compatible slot on your Allen-Bradley PLC-5 Series Chassis, ensuring correct alignment and secure attachment for reliable operation.

Q: Where can the ALLEN BRADLEY 1785 CPU be installed for optimal performance?

A: It is intended for use in regulated industrial environments, such as factory control rooms. The CPU functions efficiently in ambient temperatures from 0C to 60C and should be installed in a well-ventilated enclosure to benefit from its passive cooling design.

Q: When is firmware upgrading necessary, and how is it performed on the 1785 CPU?

A: Firmware upgrades are recommended when new features, enhancements, or security fixes are released by the manufacturer. Upgrading is performed in the field using appropriate tools and updates provided by Allen-Bradley, ensuring minimal disruption to your control process.

Q: What benefits does redundancy support provide in select 1785 CPU models?

A: Redundancy support guarantees continuous operation in mission-critical environments by allowing failover functionality. In case of a primary processor fault, a backup can immediately assume control, minimizing downtime and enhancing process safety.

Q: How does the onboard diagnostics feature improve maintenance and troubleshooting?

A: Onboard diagnostics help detect faults, monitor system health, and simplify troubleshooting. This reduces maintenance time and enables quicker resolution of issues, thereby improving system reliability and reducing operational costs.

Q: What usage scenarios are ideal for the ALLEN BRADLEY 1785 CPU?

A: The 1785 CPU excels in industrial automation scenarios like process control, manufacturing, assembly lines, and utilities. Its high processing efficiency and robust communication capabilities make it suitable for complex, automated control systems in demanding industrial environments.

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