View Cart

Allen-Bradley 1756-IV32/H ControlLogix 32-point, 12/24V DC

Allen-Bradley 1756-IV32/H ControlLogix digital input module, 32-point 12/24V DC sourcing inputs (for sinking field devices). NJT Automation sources the 1756-IV32/H 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-IV32/H ControlLogix digital input module, 32-point, 12/24V DC - replacement part available from NJT Automation
Request Replacement QuoteRequest Repair Quote
Price
On Request
Availability and condition determine final quote.
DescriptionControlLogix digital input module, 32-point, 12/24V DC.
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

The original Allen-Bradley warranty does not apply to pre-owned units. Full warranty coverage is provided directly by NJT Automation. If you have any issues we can usually swap your unit next-day air (based on inventory)-no waiting weeks for a repair.

Included: 1 Year
+1 Year: +15% of product price
+2 Years: +25% of product price
View Full Warranty Policy
Returns
90-day free returns on all purchases. View return policy
Exchange

Send us your defective 1756-IV32/H 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 QuoteLearn more about Inventory Levels
Repairs

1756-IV32/H Mail-In Repair Service

How the Process Works:

  1. Submit Your RFQ: Complete the request-for-quote (RFQ) form with your exact requirements.
  2. Receive a Quote: We respond ASAP - within 1 hour during business hours.
  3. Approve and Pay: Agree to the quoted price, and we will issue an invoice payable via credit card or your preferred method.
  4. 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 digital input module
1756IV32

32-point 12/24V DC sourcing inputs (for sinking field devices).

1756
BulletinControlLogix: Rockwell Automation's chassis-based control platform (controllers, I/O, communication modules, power supplies and chassis).
I
Module typeInput module (I).
V
Voltage / signal type12/24V DC sourcing inputs (for sinking field devices).
32
Point count32 points.
Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.

Similar Part Numbers

  • 1756-IB32 Voltage / signal type: 12/24V DC (10…31.2V DC) sink/source inputs
  • 1756-IV16 Point count: 16 points

Allen Bradley Information

Technical Description
Allen Bradley ControlLogix Digital Input Module 32-Point, 24V DC Sink
Lifecycle: Active — verify current status with the manufacturer

Alternate Part Numbers

1756IV32/H, 1756IV32-H
CategoryControlLogix
Part Number1756-IV32/H
ManufacturerAllen-Bradley

Can the 1756-IV32/H be repaired?

Yes. NJT Automation offers mail-in repair for the 1756-IV32/H, 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
  • 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-IV32/H failures

Failure patterns we regularly see on ControlLogix digital input module hardware like the 1756-IV32/H:

  • Input point stuck ON or OFF after a field short or overvoltage on the sensor wiring
  • Group of inputs dead when the common for that group has been damaged
  • Slow or missed inputs: input filter components degraded
  • Removable terminal block pins bent or corroded, giving intermittent points
  • Module fault LED red at power-up
  • Leakage on AC input modules (IA / IM) turning points on with the field device off

Repair or replace?

ReplaceI/O cards like the ControlLogix digital input module are the easiest modules to swap: same slot, same wiring, no setup. Replace the 1756-IV32/H when a channel is dead and the machine needs to run now. Stick with the exact 1756-IV32/H. The suffix sets the 32-point density and 12/24V DC rating, so a near match is a different unit. We source the 1756-IV32/H on request, so weigh that lead time against a repair turnaround.
RepairA single blown point on the 1756-IV32/H is a component-level repair (a driver, input channel or on-board fuse), so repair pays when replacements are scarce or you have several cards with a few bad channels each. Most 1756-IV32/H units reach our bench with one of two symptoms: “Input point stuck ON or OFF” or “Group of inputs dead”. Every 1756-IV32/H repair is fully function-tested and covered by a 1-year warranty.

Why Choose Our Repair Service?

  • ■ Rush turnaround available, with 24-hour emergency service on some models
  • ■ 1-year full-function warranty, with 2- and 3-year extended options
  • ■ No evaluation or diagnostic charges
  • ■ Free UPS shipping label available
  • ■ "Unrepairable" is not an option
  • ■ Thousands of successful Allen-Bradley restorations

Request a Repair Quote

Ready to repair your 1756-IV32/H? Request a repair quote below. For immediate assistance, text photos of your faulty unit and a description of the symptoms to (414) 331-5954.

Start Your Repair Today

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.

The Allen-Bradley 1756-IV32/H is a ControlLogix digital input module: 32-point 12/24V DC sourcing inputs (for sinking field devices).
The 1756-IV32/H 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.
This 1756-IV32/H 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.
Yes. UPS Next Day Air is available at checkout for the 1756-IV32/H. 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.
Yes. Once your 1756-IV32/H has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.
32 points.
1756-IV32/H breaks down as: 1756 = ControlLogix; I = Input module (I); V = 12/24V DC sourcing inputs (for sinking field devices); 32 = 32 points.
NJT Automation

NJTAutomation

Industrial Electronics

Supply & Repair, Milwaukee WI

(414) 331-5954EmailRequest a quote

Company

AboutContactCareersArticlesBest-Selling PartsRepairModeSitemap

Policies

ShippingReturnsWarrantyPrivacyAuthenticitySustainability

Repair Services

PanelView RepairHMI RepairPLC RepairVFD RepairServo Drive RepairServo Motor Repair

Reviews

eBay5.0 · 2,024 reviewsGoogle5.0 · 22 reviewsRepairMode5.0 · 14 reviews
Disclaimer

Trademarks & Compatibility

All trademarks, service marks, trade names, brand names, and logos displayed on this website are the property of their respective owners. Any references to manufacturers, products, or brands are for identification and compatibility purposes only and do not imply any affiliation with, endorsement by, sponsorship from, or authorization by the respective trademark owners.

Independent Supplier

NJT Automation is an independent supplier of surplus, refurbished, and pre-owned industrial automation equipment. Unless expressly stated otherwise, NJT Automation is not an authorized distributor, dealer, representative, or affiliate of the original equipment manufacturer (OEM) for any products offered on this website.

Product Condition & Warranty

Products sold by NJT Automation may be surplus inventory, discontinued models, older series, or units with earlier manufacturing date codes than those currently available from the OEM or its authorized distribution network. As NJT Automation is not an authorized distributor, manufacturer warranties, support programs, and other OEM services may not apply. Any warranty provided is solely that of NJT Automation, where applicable.

Firmware & Software Licensing

Certain programmable logic controllers (PLCs), drives, HMIs, and other electronic products may require firmware to operate. While some products may include firmware, NJT Automation makes no representations or warranties regarding whether firmware is installed, the firmware version or revision level, its compatibility with your application, or its licensing status.

NJT Automation does not provide, obtain, transfer, or license firmware on behalf of customers. We make no representation regarding your ability or legal right to obtain, download, install, or use firmware from the OEM, its authorized distributors, or any other source. It is the customer's sole responsibility to ensure compliance with all applicable End User License Agreements (EULAs), software licenses, intellectual property rights, and other terms governing the acquisition, installation, and use of firmware.

© 2026 NJT Automation. Independent industrial automation supplier and repair provider.