Allen-Bradley 1769-L37ERM CompactLogix Processor 4 MB

Allen-Bradley 1769-L37ERM CompactLogix 5370 L3 controller, 4 MB user memory, dual EtherNet/IP ports, 64 nodes, 30 Compact I/O (1769) modules in 3 banks. NJT Automation sources the 1769-L37ERM on request; send the part number for a replacement or repair quote.

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

Allen-Bradley 1769-L37ERM CompactLogix 5370 L3 controller, 4 MB - replacement part available from NJT Automation

Request Replacement Quote Request Repair Quote

Part Number	1769-L37ERM
Price	On Request Availability and condition determine final quote.
Description	CompactLogix 5370 L3 controller, 4 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 1769-L37ERM 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

1769-L37ERM 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

CompactLogix 5370 L3 controller

1769L37ERM64

CompactLogix 5370 L3 controller, 4 MB user memory, dual EtherNet/IP ports, 64 nodes, 30 Compact I/O (1769) modules in 3 banks, 16-axis integrated motion.

1769: BulletinCompactLogix / Compact I/O: Rockwell Automation's rack-less, DIN-rail Logix platform. 1769 controllers, I/O modules, power supplies and adapters snap together on a shared backplane bus.
L37: ControllerCompactLogix 5370 L3 controller (L37 class).
ER: CommunicationDual EtherNet/IP ports (linear / device-level-ring topologies), USB programming port, SD card slot.
4 MB: Memory size4 MB of standard user memory.
M: MotionIntegrated Motion on EtherNet/IP: up to 16 CIP Drive (position-loop) axes.
64: NetworkSupports up to 64 EtherNet/IP nodes; 30 Compact I/O (1769) modules in 3 banks.

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 DimensionsWeight1.46 lb (0.66 kg)

Weight	0.66 kg (1.46 lb) Typical unit weight, CompactLogix 5370 controller; 1769-L24ER-QB1B 0.63 kg
Shipping Weight	1.06 kg (2.34 lb) Estimated: unit weight plus box and packing material; bills as 3 lb

Product weight 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.

Allen Bradley Information

Technical Description

CompactLogix 5370 L3 controller, 4 MB user memory, dual EtherNet/IP ports, 64 nodes, 30 Compact I/O (1769) modules in 3 banks, 16-axis integrated motion.

Alternate Part Numbers

1769L37ERM

Can the 1769-L37ERM be repaired?

Yes. NJT Automation offers mail-in repair for the 1769-L37ERM, 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 1769-L37ERM failures

Failure patterns we regularly see on CompactLogix 5370 L3 controller hardware like the 1769-L37ERM:

Program lost on power cycle: battery (1769-BA) depleted, BAT LED red or flashing
Solid red OK LED (nonrecoverable major fault) at power-up
Embedded Ethernet port failure or dropped connections on -E / -ER controllers
CompactFlash or SD card corruption: stored project will not load
Channel 0 RS-232 port damaged by a hot-plugged programming cable

Repair or replace?

ReplaceReplace the 1769-L37ERM if it will not boot, shows a solid red fault light, or has lost its program. Another CompactLogix 5370 L3 controller takes the same program: download it, match the firmware, and the line is running again. Order the exact 1769-L37ERM. The catalog number sets the 4 MB memory, and a different suffix changes it. We source the 1769-L37ERM on request, so weigh that lead time against a repair turnaround.

RepairRepair the 1769-L37ERM when the fault is in the power section, a port or the status display rather than the processor core, or when the controller carries a firmware revision or validated project you cannot easily re-flash onto a different unit. The two 1769-L37ERM symptoms we see most often are “Program lost on power cycle” and “Solid red OK LED (nonrecoverable major fault) at power-up”. If a replacement is already installed, repairing the failed 1769-L37ERM gives you a tested spare on the shelf for the next failure. Every 1769-L37ERM repair is fully function-tested and covered by 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 1769-L37ERM?

The Allen-Bradley 1769-L37ERM is a CompactLogix 5370 L3 controller, 4 MB user memory, dual EtherNet/IP ports, 64 nodes, 30 Compact I/O (1769) modules in 3 banks, 16-axis integrated motion.

What condition is the 1769-L37ERM in?

The 1769-L37ERM is available 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?

This 1769-L37ERM 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 1769-L37ERM CompactLogix 5370 L3 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 1769-L37ERM has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.

What communication ports does the 1769-L37ERM have?

Dual EtherNet/IP ports (linear / device-level-ring topologies), USB programming port, SD card slot.

How much memory does the 1769-L37ERM have?

4 MB of standard user memory.