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Allen-Bradley 1756-IF8H ControlLogix Analog Input Module 8-channel

The Allen-Bradley 1756-IF8H is a ControlLogix analog input module, 8-channel HART analog input module. NJT Automation sources the 1756-IF8H 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-IF8H ControlLogix analog input module, 8-channel – front view
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Price
On Request
Availability and condition determine final quote.
DescriptionControlLogix analog input module, 8-channel.
ShippingUPS Ground included | Next-Day Air and Worldwide Shipping available at checkout
Warranty1-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
Returns90-day free returns on all purchases.View return policy
Exchange

Send us your defective 1756-IF8H 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-IF8H 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 analog input module
1756IF8H

8-channel HART analog input module.

1756
BulletinControlLogix: Rockwell Automation's chassis-based control platform (controllers, I/O, communication modules, power supplies and chassis).
IF
Analog inputAnalog input: voltage / current (±10V, 0…20 mA and similar ranges), 16-bit class.
8
Channel count8 channels.
H
ProtocolHART: passes HART digital data (device status, secondary variables) over the 4…20 mA loop.
Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.

Allen Bradley Information

Technical Description
PLC Analog Input Module Voltage-Current 8 Inputs Input

Alternate Part Numbers

1756IF8H
CategoryControlLogix
Part Number1756-IF8H
ManufacturerAllen-Bradley

Can the 1756-IF8H be repaired?

Yes. NJT Automation offers mail-in repair for the 1756-IF8H, 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-IF8H failures

Failure patterns we regularly see on ControlLogix analog input module hardware like the 1756-IF8H:

  • Channel reading drifts, offsets or rails at full scale: input protection damaged by overvoltage
  • Underrange / open-wire alarms with a good field loop (channel front-end failure)
  • Calibration lost on one or more channels
  • RTD / thermocouple channels reading wrong from failed cold-junction compensation or lead resistance
  • Noisy readings from a damaged filter section or grounded shield
  • Module fault LED red at power-up

Repair or replace?

ReplaceReplace the 1756-IF8H when a channel reads open, pegged, or drifting and the loop cannot wait. The ControlLogix analog input module only carries its channel settings, and those download from the project. Stick with the exact 1756-IF8H. The suffix sets the 8-channel density, so a near match is a different unit. We source the 1756-IF8H on request, so weigh that lead time against a repair turnaround.
RepairAnalog cards are worth repairing because the failure is usually one channel's front end or an isolated supply, and the repair includes recalibration of every channel. Choose repair for the 1756-IF8H when replacements are hard to find or the card is one of several the same age. Most 1756-IF8H units reach our bench with one of two symptoms: “Channel reading drifts, offsets or rails at full scale” or “Underrange / open-wire alarms with a good field loop”. Already swapped it out? Repairing the failed 1756-IF8H turns it into a tested spare on the shelf for the next failure. Every 1756-IF8H 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-IF8H? 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-IF8H is a ControlLogix analog input module: 8-channel HART analog input module.
The 1756-IF8H 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-IF8H 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-IF8H. 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-IF8H has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.
HART: passes HART digital data (device status, secondary variables) over the 4…20 mA loop.
8 channels.
1756-IF8H breaks down as: 1756 = ControlLogix; IF = Analog input; 8 = 8 channels; H = HART.
NJT Automation

NJTAutomation

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Supply & Repair, Milwaukee WI

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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.

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