PRODUCT INFORMATION
Product Overview
Revision scope: These specifications describe 1747-L531/D (Series D). Check the corresponding technical data before specifying another hardware series.
The Allen-Bradley 1747-L531 SLC 500 Processor Module provides central logic execution for industrial systems. This SLC 5/03 controller contains 8K words of user memory with battery-backed RAM and Flash EEPROM backup. Program scan time executes at 1 ms per kiloword of user logic. The module manages up to 4,096 discrete inputs and 4,096 discrete outputs.
The unit mounts directly into slot 0 of an SLC 500 modular chassis. It addresses up to 3 local chassis and 30 total module slots. Backplane current draw requires 500 mA at 5V DC and 175 mA at 24V DC. Operating temperature ranges from 0°C to 60°C with non-condensing relative humidity between 5% and 95%.
TECHNICAL DATA
Technical Specifications
These specifications describe 1747-L531/D (Series D). Check the corresponding technical data before specifying another hardware series.
| Parameter | Specification |
|---|
| Specification | Value |
|---|
| Series / Family | SLC 500 / SLC 5/03 |
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| Series Revision | Series D |
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| Supply Voltage | 5V DC / 24V DC (backplane) |
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| Backplane Current Draw | 500 mA @ 5V DC / 175 mA @ 24V DC |
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| User Memory | 8K words (battery-backed RAM + Flash EEPROM backup) |
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| Maximum Discrete I/O | 4,096 Inputs / 4,096 Outputs (8,192 total) |
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| Maximum Local Analog I/O | 480 points |
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| Communication Ports | Channel 0: RS-232 (DF1 / ASCII / DH-485); Channel 1: DH-485 |
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| Program Scan Time | 1 ms per K word |
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| I/O Scan Time | 0.225 ms |
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| Local Chassis / Max I/O Slots | 3 local chassis / 30 slots maximum |
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| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
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| Relative Humidity | 5% to 95% non-condensing |
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| Vibration Rating (Operating) | 1.0g @ 5–2000 Hz |
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| Shock Rating | 30g, 3 pulses in 11 ms |
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| Isolation (Channel to Backplane) | 500V DC / 1500V AC; Dielectric Withstand: 1500V AC |
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| Mounting Style | Rack Mount (SLC 500 chassis, Slot 0) |
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| Programming Software | RSLogix 500 |
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| Certifications | UL, CE, C-Tick; EN50082-2 / EN50081-2 |
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| Weight | 0.45 kg (0.99 lb) |
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TECHNICAL INFORMATION
Order Information
| Revision Part # | Also known as | Reference Price |
|---|
| 1747-L531 Ser D | 1747-L531/D, Series D | USD 257.00, indicative (Used/Refurbished) |
| 1747-L531 Ser E | 1747-L531/E, Series E | USD 249.00, indicative (Used/Refurbished) |
Reference prices are observed third-party market prices for the stated revision, not a final Aituos quotation.
TECHNICAL INFORMATION
Features
- Provides 8K words of user memory with battery-backed RAM and Flash EEPROM retention.
- Delivers program execution speeds of 1 ms per kiloword.
- Achieves input and output scan times of 0.225 ms.
- Controls up to 8,192 discrete points across 30 local chassis slots.
- Supports up to 480 local analog input and output channels.
- Includes Channel 0 for RS-232 serial communication and Channel 1 for DH-485.
TECHNICAL INFORMATION
Connections / Interfaces
- Channel 0 supports RS-232 communication using DF1, DH-485, or ASCII protocols.
- Channel 1 provides a dedicated DH-485 network communication interface.
- Backplane connectors deliver electrical power and signal bus connection in chassis slot 0.
TECHNICAL INFORMATION
Installation Guidelines
- Install the processor module exclusively into slot 0 of the first chassis.
- Turn off system power before installing or removing the processor module.
- Connect the lithium battery to preserve volatile user RAM contents.
- Maintain environmental ambient temperatures between 0°C and 60°C in the enclosure.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure logic and operating parameters using Rockwell Software RSLogix 500.
- Assign protocol mode on Channel 0 for DF1, DH-485, or ASCII operation.
- Set unique node addresses for DH-485 network nodes prior to operation.
TECHNICAL INFORMATION
Compatibility
- Installs into standard modular Allen-Bradley SLC 500 chassis.
- Communicates with devices on DH-485 and RS-232 serial networks.
- Programs and configures through RSLogix 500 programming software.
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- The verified technical hardware revision scope covers Series D hardware.
- Replacement requires configuration download via RSLogix 500 into slot 0.
TECHNICAL INFORMATION
Compliance and Certifications
- UL listed for industrial automation use.
- CE marked under EN50081-2 and EN50082-2 standards.
- C-Tick certified for electromagnetic compatibility.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSInstalls into standard modular Allen-Bradley SLC 500 chassis. Communicates with devices on DH-485 and RS-232 serial networks. Programs and configures through RSLogix 500 programming software.
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
Where must the 1747-L531 processor module be installed in a chassis?
The 1747-L531 module must be installed in slot 0 of the first SLC 500 chassis.
What communication protocols are supported on Channel 0?
Channel 0 supports RS-232 communication using DF1, DH-485, or ASCII protocols.
How much memory does the 1747-L531 processor contain?
The processor includes 8K words of user memory with battery-backed RAM and Flash EEPROM backup.
What software is used to program the 1747-L531 controller?
The processor is configured and programmed using RSLogix 500 software.
What is the reference price for the 1747-L531 module?
Observed pricing is USD 257.00. This is indicative market reference pricing only and is not a final quotation.
