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1747-L551

Allen-Bradley 1747-L551 | SLC 5/05 Ethernet CPU Processor Module

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  • Manufacturer: Allen-Bradley

  • Product No.: 1747-L551

  • Product Type: Processor Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 500g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Tavsif

Allen-Bradley 1747-L551 SLC 5/05 Ethernet CPU Processor Module

The Allen-Bradley 1747-L551 is a high-performance SLC 5/05 modular processor designed for demanding industrial automation and discrete control applications. Featuring 16 KB of battery-backed user memory (expandable up to 64K via the 1747-M13 module), this processor manages up to 4,096 input/output points and 480 analog I/O channels. Equipped with an integrated 10/100 Mbps Ethernet port and an RS-232 communication channel supporting DF1 and DH-485 protocols, it delivers fast program execution speeds of 0.9 ms/K. Designed for slot zero installation in SLC 500 chassis systems, it ensures robust plant-wide networking, HMI integration, and real-time process monitoring. Weighing approximately 0.5 kg (1.1 lbs), it provides a compact yet powerful computing core for industrial control enclosures.

Technical Specifications

Manufacturer & Brand Allen-Bradley / Rockwell Automation
Catalog Number / Part No. 1747-L551
Product Family & Series SLC 500 / SLC 5/05 Modular Processor
User Memory & Backup 16 KB (16,000 Words) RAM | Optional 1747-M13 (64K) & 1747-BA Battery
I/O Capacity & Limits 4,096 Inputs / 4,096 Outputs | 480 Analog I/O | Max 30 Chassis Slots
Communication Ports 1x 10/100 Base-T Ethernet Port | 1x RS-232 Channel (DF1, DH-485, Modem)
Scan Time Performance Program Scan: 0.9 ms/K | I/O Scan: 0.225 ms
Environmental Limits Operating Temp: 0°C to 60°C (32°F to 140°F) | 5–95% Non-Condensing Humidity
Shock & Vibration Resistance Operating Shock: 30G | Operating Vibration: 2.5G @ 5–2000 Hz
Chassis Slot & Net Weight Exclusive Slot 0 (Zero) Installation | Approx. Net Weight: 0.5 kg (1.1 lbs)

Quick Installation Guide

  • Ensure all chassis power is disconnected before installing or removing the 1747-L551 processor module.
  • Insert the processor securely into Slot 0 (the leftmost slot) of the primary SLC 500 modular chassis.
  • Connect Ethernet and RS-232 communication cables, verify battery and memory module seating, then restore power to initiate system startup.

Technical FAQs

Q1: What is the user memory capacity of the Allen-Bradley 1747-L551 processor?
A1: It comes with 16 KB (16,000 words) of user memory, which can be expanded up to 64K using an optional 1747-M13 memory module.

Q2: Which communication interfaces are built directly onto this SLC 5/05 module?
A2: It features an integrated 10/100 Base-T Ethernet port for high-speed messaging and an RS-232 port supporting DF1 full/half-duplex and DH-485 protocols.

Q3: In which slot of the chassis must the 1747-L551 processor be installed?
A3: This processor is designed to be exclusively installed in Slot 0 (the first slot on the left) of the SLC 500 chassis.

Product Resources

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🏷️ Tags: Processor Module
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