Allen-Bradley 1747-L524 SLC 500 Processor

Allen-Bradley 1747-L524 SLC 5/02 PLC Processor, 4K Words User Memory. NJT Automation sources the 1747-L524 on request; send the part number for a replacement or repair quote.

Quote required. Request a quote below for pricing and delivery.

Allen-Bradley 1747-L524 SLC 5/02 PLC Processor – Series C (1 of 7)

Actual NJT inventory photos

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Part Number	1747-L524
Price	On Request Availability and condition determine final quote.
Description	SLC 5/02 PLC Processor.
Shipping	UPS Ground included \| Next-Day Air and Worldwide Shipping available at checkout
Warranty	1-year full-function warranty provided by NJT Automation. Warranty details Included 1 year, full-function 2 years +15% of product price 3 years +25% of product price View full warranty policy
Returns	90-day free returns. View return policy
Exchange	Send us your defective 1747-L524 after your purchase for a 10% core credit. We also purchase old or damaged parts outright.

Availability

Sourced on request

We do not have a 1747-L524 on the shelf right now. We can source one through our supplier network; request a quote and we confirm availability, price and lead time before you commit.

Sourcing

Sourced through our Level 1 network of vetted US suppliers. Each unit is checked before it ships and carries the same NJT warranty and return policy as our own stock. Quotes within one hour during business hours; typical delivery 3–5 business days, next-day air available. Sourced parts are not available for local pickup.

Request Quote How Level 1 sourcing works

Repairs

1747-L524 Mail-In Repair Service

Part Number Decoder

SLC 5/02 PLC Processor

1747L524

1747: BulletinSLC 500: Allen-Bradley's small/medium modular PLC family. Bulletin 1747 covers processors, communication modules and accessories; chassis, power supplies and I/O modules are bulletin 1746.
L: Module typeProcessor (CPU) module: occupies slot 0 of the SLC 500 chassis.
5: FamilySLC 500 modular processor.
2: Processor typeSLC 5/02: one DH-485 port; adds indirect addressing, PID and higher-speed scan over the 5/01.
4: Memory size4K words of user memory.

Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.

Intended Use

Designed for legacy modular machine and small-process control applications. SLC 500 processors still run packaging lines, conveyors, water and wastewater stations, HVAC plants and OEM machinery installed through the 1990s and 2000s. Most demand today is replacing a failed processor like-for-like so the existing rack, I/O and RSLogix 500 program stay in place.

Migration Path

Rockwell Automation has discontinued SLC 500 processors; replacement units come from the surplus market. Published successor for the SLC 500 modular processor: CompactLogix 5380 (5069-L3xxER) with Compact 5000 I/O, or CompactLogix 5370 (1769-L3xER) to reuse 1769 Compact I/O.

A 1747-AENTR EtherNet/IP adapter in slot 0 of the existing 1746 chassis lets the new CompactLogix own the installed I/O, so the processor can be replaced first and the I/O later.
When the I/O is converted, 1492-CM1746 conversion modules and pre-wired cables move the 1746 field wiring to Compact 5000 or 1769 I/O without re-terminating field devices.
Translate the RSLogix 500 program with the Studio 5000 Logix Designer project translation tool; 1756-RM085 lists the SLC instructions and file-based addressing that need manual rework.
DH-485 and DH+ devices (PanelView Standard, other SLCs) need a gateway or their own migration, since CompactLogix is EtherNet/IP only.

A like-for-like replacement or a repair keeps the existing program, wiring and panel layout; a migration is a project. Both are listed on this page so the choice can be made on lead time and budget.

Physical Data

Weight and DimensionsEst. weight0.82 lb (0.37 kg)H × W × D5.7 × 1.4 × 5.7 in. (145 × 35 × 145 mm)

Estimated Weight	0.37 kg (0.82 lb) Estimated from the product dimensions and typical density for this product type
Dimensions (H × W × D)	145 × 35 × 145 mm (5.7 × 1.4 × 5.7 in.) Single-slot SLC 500 module envelope; 35 mm slot pitch
Shipping Weight	0.90 kg (1.98 lb) Estimated: unit weight plus box and packing material; bills as 2 lb
Shipping Box (L × W × H)	12 × 12 × 8 in. (305 × 305 × 203 mm) Smallest standard box fitting the product with 3 in. cushioning per side

Product dimensions are typical manufacturer-published values and may differ by series or option. Unit weight is an estimate; no published figure is available for this catalog number. Shipping box and weight are estimates for freight planning; the packed unit may ship in a different box.

Similar Part Numbers

1747-L531 Processor type: SLC 5/03; Memory size: 8K words of user memory
1747-L532 Processor type: SLC 5/03; Memory size: 16K words of user memory
1747-L542 Processor type: SLC 5/04; Memory size: 32K words of user memory
1747-L551 Processor type: SLC 5/05; Memory size: 16K words of user memory
1747-L552 Processor type: SLC 5/05; Memory size: 32K words of user memory

Allen Bradley Information

Technical SpecificationsLifecycle status

Lifecycle	Discontinued Verify current status with the manufacturer.

Can the 1747-L524 be repaired?

Yes. NJT Automation repairs the 1747-L524 by mail-in: diagnostic evaluation, component-level repair and a functional test, backed by a 1-year full-function warranty.

NJT managed repair. No evaluation fee; no repair, no charge. Prepaid UPS label both ways, $650 minimum, rush available. 1-year full-function warranty included, 2- and 3-year options.

Get a repair quoteor text photos and symptoms to (414) 331-5954

Compare quotes from independent repair technicians. Post your repair on RepairMode to receive competitive bids from experienced technicians. Each technician sets their own pricing and warranty.

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Common failures

Failure patterns we regularly see on SLC 5/02 PLC Processor hardware like the 1747-L524:

Keyswitch worn: processor will not stay in RUN or REM
Channel 0 RS-232 port damaged by a hot-plugged or miswired programming cable
Backplane connector wear causing intermittent rack faults
DH+ channel 1 dead on a 5/04 (transceiver failure on the 3-pin blue-hose port)
Program lost on power cycle: BATT LED on, battery (1747-BA) depleted

Related services:PLC Repair All Repair Services

Photos by NJT Automation; test videos from NJT or network repair technicians.

Still have questions?

Find answers to shipping, warranties, repairs, and more.

Frequently Asked Questions

What is the 1747-L524?

The Allen-Bradley 1747-L524 is an SLC 5/02 PLC Processor, 4K Words User Memory; one DH-485 port; adds indirect addressing, PID and higher-speed scan over the 5/01.

What condition is it in?

The 1747-L524 may be available on request in Unused surplus / Refurbished / Used condition. We can quote this part in unused surplus, refurbished, or used condition depending on availability and your preference. Specify your requirement in the RFQ.

When does this part ship?

The 1747-L524 is sourced on request. Request a quote and we'll confirm availability and lead time, typically a few business days.

How much memory does it have?

4K words of user memory.