PRODUCT INFORMATION
Product Overview
Revision scope: These specifications describe 1747-L552/A (Series A). Check the corresponding technical data before specifying another hardware series.
The Allen-Bradley 1747-L552 is an SLC 500 processor module. It features 32K words of total user memory. This includes 28K words for data and program logic. An additional 4K words remain dedicated to data storage. Memory retention uses standard battery-backed CMOS RAM with Flash EEPROM support.
The unit connects across up to three local chassis and thirty module slots. It addresses up to 4,096 discrete inputs and 4,096 discrete outputs. Local analog capacity reaches up to 480 points. Integrated communication includes a 10Base-T Ethernet RJ45 port and an RS-232 port. Typical program scan time is 0.9 milliseconds per K words.
TECHNICAL DATA
Technical Specifications
These specifications describe 1747-L552/A (Series A). Check the corresponding technical data before specifying another hardware series.
| Parameter | Specification |
|---|
| Specification | Value |
|---|
| User Memory | 32K words total (28K words data/program, 4K words data only) |
|---|
| Discrete I/O Capacity (Max) | 4,096 inputs + 4,096 outputs (8,192 total) |
|---|
| Local Analog I/O (Max) | 480 points |
|---|
| Communication Ports | 10 Base-T Ethernet (RJ45); RS-232 (configurable for DH-485) |
|---|
| Backplane Current Draw | 1,000 mA at 5V DC; 200 mA at 24V DC |
|---|
| Program Scan Time | 0.9 ms/K words (typical); I/O scan: 0.225 ms (typical) |
|---|
| Local I/O Chassis / Max Slots | 3 chassis / 30 slots |
|---|
| Operating Temperature | 0 to 60 degrees C (32 to 140 degrees F) |
|---|
| Backup Memory | Flash EEPROM; battery-backed CMOS RAM standard |
|---|
TECHNICAL INFORMATION
Order Information
| Revision Part # | Also known as | Reference Price |
|---|
| 1747-L552 Ser A | 1747-L552/A, Series A | USD 2,320.00, indicative (Used/Refurbished) |
| 1747-L552 Ser B | 1747-L552/B, Series B | |
| 1747-L552 Ser C | 1747-L552/C, Series C | USD 4,020.00, indicative |
| 1747-L552 Ser D | 1747-L552/D, Series D | |
Reference prices are observed third-party market prices for the stated revision, not a final Aituos quotation.
TECHNICAL INFORMATION
Features
- Provides 32K words total user memory with 28K words allocated for logic.
- Supports 8,192 total discrete I/O points and 480 local analog points.
- Includes an RJ45 10Base-T Ethernet port for network communications.
- Offers an RS-232 channel configurable for DH-485 communication.
- Operates across configurations up to three local chassis and thirty slots.
- Maintains memory using battery-backed CMOS RAM and Flash EEPROM.
TECHNICAL INFORMATION
Connections / Interfaces
- One RJ45 connector provides 10Base-T Ethernet communication.
- One RS-232 serial port supports configuration for DH-485 protocols.
TECHNICAL INFORMATION
Installation Guidelines
- Operate the hardware within ambient temperatures between 0 and 60 degrees Celsius.
- Verify system power supply capacity provides 1,000 mA at 5V DC backplane current.
- Ensure power supplies accommodate 200 mA at 24V DC backplane current.
- Restrict local chassis expansion to a maximum of three chassis and thirty slots.
TECHNICAL INFORMATION
Compatibility
- Integrates with Allen-Bradley SLC 500 system chassis and compatible I/O modules.
- Connects to 10Base-T Ethernet and RS-232 or DH-485 network architectures.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSIntegrates with Allen-Bradley SLC 500 system chassis and compatible I/O modules. Connects to 10Base-T Ethernet and RS-232 or DH-485 network architectures.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What communication ports are available on the Allen-Bradley 1747-L552?
The processor includes a 10Base-T Ethernet RJ45 port and an RS-232 port configurable for DH-485.
What is the memory size of the 1747-L552 processor module?
It provides 32K words total user memory, including 28K words for program/data and 4K words for data.
What is the maximum I/O capacity supported by the 1747-L552?
It supports up to 8,192 discrete I/O points and 480 local analog points across thirty slots.
What is the market reference price for an Allen-Bradley 1747-L552?
Observed market reference pricing is USD 2,320 for refurbished units. Pricing is indicative only and not a final quotation.
