Allen-Bradley 1756-L61 ControlLogix Processor 2 MB

Allen-Bradley 1756-L61 2 MB ControlLogix 5560 controller. NJT Automation sources the 1756-L61 on request; send the part number for a replacement or repair quote.

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

Allen-Bradley 1756-L61 ControlLogix 5560 controller, 2 MB – front view

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Part Number	1756-L61
Price	On Request Availability and condition determine final quote.
Description	ControlLogix 5560 controller, 2 MB.
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 1756-L61 after your purchase for a 10% core credit. We also purchase old or damaged parts outright.

Availability

Available Level 1

This part is available through our Level 1 supplier network. Request a quote to confirm quantity, price, and next-day shipping options.

Inventory Level 1 RFQ

Level 1 parts come from vetted US suppliers we have worked with for years. Each unit is checked before it ships, so counterfeits, repackaged items sold as new, and worn-out equipment do not reach you. Every part carries the same NJT warranty and return policy as our own stock.

Request Quote Learn more about Inventory Levels

Repairs

1756-L61 Mail-In Repair Service

How the Process Works:

Submit Your RFQ: Complete the request-for-quote (RFQ) form with your exact requirements.
Receive a Quote: We respond ASAP - within 1 hour during business hours.
Approve and Pay: Agree to the quoted price, and we will issue an invoice payable via credit card or your preferred method.
Direct Shipping: Our normal shipping time is 3-5 business days, during which we thoroughly inspect and certify items to meet our high standards. If you request next-day air delivery, the item will be sent directly to you and arrive the following business day. Please note: These items are NOT available for local pickup at NJT Automation's location.

What We Offer

We source genuine parts from trusted U.S. channels and stand behind what we sell.

Our network has millions of parts ready to be delivered now.
Complete Transparency: Clear information on item availability.
Well-vetted components from trusted suppliers sourced from the USA.
Technical Support: Assistance, troubleshooting and hardware repairs.
Minimal Markup: The best sourcing service at a minimal cost.
Quick Delivery: Fast access to the parts you need to get your machines back up and running.
Dropship available • No branding on packaging

Part Number Decoder

ControlLogix 5560 controller

1756L61

2 MB ControlLogix 5560 controller.

1756: BulletinControlLogix: Rockwell Automation's chassis-based control platform (controllers, I/O, communication modules, power supplies and chassis).
L: Module typeLogix controller (CPU module).
6: GenerationControlLogix 5560: Logix5560 series (RSLogix 5000, v20 and earlier).
1: Memory size2 MB of standard user memory.

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

Physical Data

Weight and DimensionsWeight0.87 lb (0.39 kg)H × W × D5.7 × 1.4 × 5.7 in. (145 × 35 × 145 mm)

Weight	0.39 kg (0.87 lb) Typical unit weight
Dimensions (H × W × D)	145 × 35 × 145 mm (5.7 × 1.4 × 5.7 in.) Single-slot controller module
Shipping Weight	0.92 kg (2.03 lb) Estimated: unit weight plus box and packing material; bills as 3 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 weight and dimensions are typical manufacturer-published values and may differ by series or option. Shipping box and weight are estimates for freight planning; the packed unit may ship in a different box.

Datasheet

Datasheet available for download

Generated from product specifications; not an official Allen-Bradley datasheet. For an official datasheet, contact Allen-Bradley or an authorized distributor.

Similar Part Numbers

1756-L72 Generation: ControlLogix 5570; Memory size: 4 MB of standard user memory
1756-L73 Generation: ControlLogix 5570; Memory size: 8 MB of standard user memory
1756-L75 Generation: ControlLogix 5570; Memory size: 32 MB of standard user memory

Allen Bradley Information

Technical Description

2 MB ControlLogix 5560 controller.

Alternate Part Numbers

1756L61

Can the 1756-L61 be repaired?

Yes. NJT Automation offers mail-in repair for the 1756-L61, including diagnostic evaluation, component-level repair, and functional testing.

NJT Managed Repair

One vendor. One warranty. NJT manages the entire process.

1-year full-function NJT warranty, with 2- and 3-year options available
Rush service available for production-critical repairs
No evaluation or diagnostic charges
No repair, no charge
"Unrepairable" is not an option
Pre-paid UPS shipping label provided for sending your unit in
$650 minimum repair charge, shipping included both ways

Get an NJT Repair Quote

Looking for another option? For lower-cost repairs or if you prefer to work directly with an independent repair specialist, compare bids through RepairMode. RepairMode providers operate independently and set their own pricing and warranty terms.

Find a PLC repair specialiston RepairMode.com ↗

Common 1756-L61 failures

Failure patterns we regularly see on ControlLogix 5560 controller hardware like the 1756-L61:

Battery-holder corrosion after a leaking cell
Program lost on power cycle: battery (1756-BA1 / BA2) depleted, BAT LED red or flashing
Solid red OK LED (nonrecoverable major fault) at power-up
CompactFlash (1784-CF64 / CF128) corruption: stored project does not load
Front RS-232 serial port damaged from a hot-plugged programming cable

Repair or replace?

ReplaceReplacement ControlLogix 5560 controller units are usually surplus or refurbished. Replace the 1756-L61 if it is dead or faulting and you have a current program backup. Check that the series and firmware match your project first. Stick with the exact 1756-L61. The suffix sets the 2 MB memory, so a near match is a different unit. The 1756-L61 is not shelf stock, so sourcing time is part of the repair-or-replace decision.

RepairRepair keeps the exact 1756-L61 your program and licensing were validated on and can preserve the memory contents when no backup exists. It is usually the better call for battery-holder corrosion, a damaged comm port or a failed power section when matching stock is scarce. Most 1756-L61 units reach our bench with one of two symptoms: “Program lost on power cycle” or “Solid red OK LED (nonrecoverable major fault) at power-up”. Already swapped it out? Repairing the failed 1756-L61 turns it into a tested spare, and on an older platform that spare can be hard to buy later. Repaired 1756-L61 units are function-tested before return and carry a 1-year warranty.

Request a Repair Quote

Text photos of the faulty unit and the symptoms to (414) 331-5954.

Start Your Repair Today

Related services:PLC Repair All Repair Services

All product photos were taken by NJT Automation. Test videos originated from either NJT Automation internally or from repair technicians within our network.

Still have questions?

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

Frequently Asked Questions

What is the 1756-L61?

The Allen-Bradley 1756-L61 is a 2 MB ControlLogix 5560 controller.

What condition is the 1756-L61 in?

The 1756-L61 is available in Used condition. Clean used pull with full functionality. Minimal cosmetic wear and backed by our 1-year warranty.

When does this part ship?

This 1756-L61 is sourced on request, so sourcing and quote timelines apply. Request a quote and we'll confirm availability and lead time. Many parts can be sourced within a few business days through our Level 1 supplier network.

Can you ship this next-day air?

Yes. UPS Next Day Air is available at checkout for the 1756-L61 ControlLogix 5560 controller. Place your order before 5:00 PM Central on a business day and your in-stock item ships the same day for next-business-day delivery.

Can I pick this item up locally?

Yes. Once your 1756-L61 has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.

How much memory does the 1756-L61 have?

2 MB of standard user memory.