Allen-Bradley 1747-L552 SLC 5/05 Processor 32KB Ethernet

Allen-Bradley 1747-L552 Processor Overview

The 1747-L552 processor is a cornerstone of the SLC 500 platform from Allen‑Bradley. It is a single‑slot module that connects directly to the backplane of any SLC chassis. Designed for versatility, this controller bridges machine‑level operations with enterprise systems via its embedded Ethernet port. Its substantial memory and I/O capacity make it a preferred choice for demanding industrial environments.

Core Technical Specifications

This controller offers a robust set of features for efficient process management. It has a user memory of 32K words, which provides ample space for complex ladder logic programs. The memory is battery‑backed to protect your data during power outages.

• I/O Capacity: Supports up to 4096 Inputs and 4096 Outputs, plus 480 Analog I/O points. This capacity allows the processor to manage multiple small processes or one extensive operation.

• Scan Times: The 1747-L552 delivers fast processing with a program scan time of 0.9 ms/K and an I/O scan time of 0.225 ms. Specifically, an XIC bit executes in just 0.37 µs.

• Communication Ports: It includes a 9‑Pin RS‑232 port for local HMI communication and an Ethernet port for networked applications. The Ethernet port is BOOTP enabled and supports up to 48 connections.

• Chassis Support: You can install this processor in up to 3 chassis with a maximum of 30 slots total for I/O modules.

Mechanical and Environmental Specifications

The 1747-L552 module is built to endure harsh industrial conditions. Its operating temperature ranges from 0 to 60 degrees Celsius, and it can be stored between -40 and 85 degrees Celsius. Additionally, it withstands non‑condensing humidity from 5 to 95%.

• Vibration & Shock: It tolerates 0.015 inches peak‑to‑peak displacement (5‑57 Hz) and 2.5G acceleration (57‑2000 Hz). Furthermore, it handles operating shocks of 30G.

• Power & Battery: The processor draws a maximum input current of 1A at 5V DC. It includes a user‑replaceable 1747‑BA lithium battery, which typically lasts two years. Moreover, a built‑in capacitor provides at least 30 minutes of run time if the battery is disconnected.

Installation and Mounting Guide

Proper installation is crucial for reliable operation. Firstly, ensure power is turned off before adding or removing the module. The 1747-L552 has an open‑type enclosure and mounts directly into any slot of a 1746 I/O chassis.

Next, connect the appropriate power supply to the chassis. For initial network setup, the Ethernet port can be configured using BOOTP. Use the RS‑232 port for direct programming or HMI connections. Remember to secure the battery connection within 30 minutes after disconnection to avoid losing RAM data.

Packaging and Logistics

Your order includes the processor module and necessary hardware for installation. We ensure secure packaging to prevent damage during transit.

• Packaging List:

  • 1 x 1747-L552 SLC 5/05 Processor Module

  • 1 x Battery (1747-BA)

  • Installation Guide

Shipping: We ship exclusively via FedEx, UPS, or DHL to ensure fast and reliable delivery worldwide.

Frequently Asked Questions (FAQ)

Q1: What is the maximum I/O capacity for the 1747-L552?
The 1747-L552 supports up to 4096 discrete inputs and 4096 outputs, along with 480 analog points. This makes it suitable for large and complex control systems.

Q2: How does the 1747-L552 connect to a network?
This processor features a built‑in Ethernet port for vertical integration and networked applications. Moreover, it includes an RS‑232 port for point‑to‑point communication with HMIs or programming terminals.

Q3: What happens to the program if the battery fails?
The 1747-L552 includes battery‑backed RAM for program storage. In case of battery failure, the data in RAM is lost. Therefore, replace the 1747-BA battery promptly. The processor also has a capacitor that provides approximately 30 minutes of backup time after battery removal.

Q4: Can I use this processor in a multi‑chassis system?
Yes, this processor supports up to three I/O chassis, offering a total of 30 module slots. This allows for strategic placement of I/O modules in a distributed topology.

Q5: What communication protocols does the 1747-L552 support?
The 1747-L552 supports Ethernet/IP and RS‑232 (DF1) protocols. For other protocols like DH+, Remote I/O, or DeviceNet, you will need additional specialty modules or gateways.