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Allen-Bradley

Allen-Bradley 1756-IF8IHK ControlLogix Analog Input Module

SKU: 1756-IF8IHK
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$2,261.81
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Allen-Bradley 1756-IF8IHK ControlLogix 8-Channel HART Isolated Analog Input Module, Conformally Coated

The Allen-Bradley 1756-IF8IHK is the conformally coated version of the ControlLogix 8-channel HART isolated analog input module. It provides eight isolated current inputs for 0-20mA and 4-20mA transmitters with 16-21 bit resolution, full HART protocol support (HART 5/6/7), and on-board HART diagnostic data. The conformal coating protects the circuit board against moisture, dust and corrosive atmospheres for harsh industrial environments. Technical data sourced directly from the official Rockwell Automation 1756-IF8IH product page. Supplied by SHLY-PLC, an independent industrial automation distributor; each unit undergoes visual inspection and functional testing before shipment. Contact our team for compatibility verification.

Features

  • Catalog Number: 1756-IF8IHK
  • Product Family: Allen-Bradley ControlLogix 1756 I/O
  • Primary Function: 8-channel HART isolated analog current input module
  • Protection: Conformally coated PCB for moisture, dust and corrosive atmospheres
  • Input Ranges: 0…20 mA (0-20.58mA), 4…20 mA (3.42-20.58mA)
  • HART Support: HART protocol versions 5, 6 and 7
  • Channels: Eight isolated current inputs
  • Resolution: 16 to 21 bits
  • Conversion: Sigma-Delta ADC (24-bit converter)
  • Isolation: 250V continuous reinforced inputs-to-backplane; basic input-to-input and to ground
  • Overvoltage Protection: 28.8V DC input protection
  • Accuracy: Module error 0.3% of range (all filters, HART disabled)
  • Display: Module Health, In Calibration, Mode
  • Terminal Block: 36-pin RTB (1756-TBCH/TBSH/TBNH), torque 0.5 N·m
  • Lifecycle: Active production
  • Typical Use: HART smart transmitter monitoring in process control, chemical, oil & gas

Specifications

Official Rockwell Automation 1756-IF8IH Technical Data

Technical Specifications
Catalog Number 1756-IF8IHK
Coating Conformally coated
Number of Inputs 8 current inputs
Input Range 0…20 mA (0-20.58mA), 4…20 mA (3.42-20.58mA)
HART Protocol HART 5, 6, 7
Resolution 16 to 21 bits
Input Impedance 250 Ω ±5 Ω
Isolation Voltage 250V continuous (reinforced inputs-to-backplane; basic input-to-input, to ground)
Input Overvoltage Protection 28.8V DC
Module Error (full temp range) 0.3% of range (all filters, HART disabled)
Power Dissipation 4 W within module
Backplane Current 210 mA @5.1V DC, 110 mA @24V DC
Terminal Block 36-pin RTB, torque 0.5 N·m
Environmental Ratings
Operating Temperature 0°C ~ +60°C
Storage Temperature -40°C
Relative Humidity 5% ~ 95%, Non-Condensing
Shock / Vibration 30 G operating / 50 G non-operating; 2 G @10~500 Hz
Agency Certifications
Certifications CE, cULus, EMC (IEC 61000-6-4), RoHS; North American temp code T5

Compatibility & Cross-References

The 1756-IF8IHK is the conformally coated variant of the 1756-IF8IH ControlLogix HART analog input module. It fits any ControlLogix chassis slot (slot width 1) and is compatible with 1756-TBCH, 1756-TBSH and 1756-TBNH 36-pin removable terminal blocks. Configured via RSLogix 5000 / Studio 5000 with electronic module keying, HART protocol settings and on-board alarming. This listing is provided by an independent industrial automation distributor; brand names and part numbers are used for product identification only.

Applications

  • HART smart transmitter monitoring in process control and SCADA systems
  • Chemical, oil & gas, water and wastewater analog signal acquisition
  • Harsh or corrosive environment installations requiring conformal coating
  • New build and spare replacement for ControlLogix HART I/O racks

Warranty

  • Availability: Active production, new units available; contact us for real-time stock status.
  • Inspection & testing: each unit is visually inspected and functionally checked before packing.
  • Delivery: orders are processed within 2-4 business days after payment confirmation; standard worldwide delivery is about 5-8 business days, express shipping available, orders over $500 ship free.

Warranty: 12-month seller warranty provided by SHLY-PLC. See our Return Policy for coverage and claims.

Independent supplier: Allen-Bradley part 1756-IF8IHK is supplied by SHLY-PLC, an independent industrial automation distributor. Brand names and part numbers are used for product identification and remain the property of their respective owners; this listing is not affiliated with, sponsored or endorsed by the manufacturer.

Frequently Asked Questions

Q: What is Allen-Bradley 1756-IF8IHK?

A: The conformally coated version of the ControlLogix 8-channel HART isolated analog input module for 0-20mA / 4-20mA current transmitters with HART 5/6/7 protocol support.

Q: What is the resolution of this module?

A: 16 to 21 bits, using a 24-bit Sigma-Delta ADC.

Q: What is the difference between 1756-IF8IHK and 1756-IF8IH?

A: Only the conformal coating differs; electrical and environmental specs are identical.

Q: Which terminal blocks are compatible?

A: 1756-TBCH, 1756-TBSH and 1756-TBNH 36-pin removable terminal blocks (torque 0.5 N·m).

1756-IF8IHK · Technical reference data · Independently supplied by SHLY-PLC

Standard International (tracked courier): delivered in 5–8 business days. In-stock items are processed within 2–4 business days. USD 25 flat rate on orders of $500 or less; free on orders over $500.

Express (DHL Express / FedEx International): upgraded expedited delivery in 2–4 business days. The Express surcharge is calculated at checkout based on destination and order weight.

Non-Stock / On-Order items ship on request: dispatch time is confirmed before your order — see our Shipping Policy. Remote-area and overweight surcharges, where applicable, are shown before checkout.

Every product is covered by a 12-month seller warranty provided by SHLY-PLC, effective from the date of delivery, against defects in materials and workmanship under normal use. Manufacturer or factory warranty service is not applicable, and extended warranty packages are not provided.

This warranty does not cover damage from misuse, improper installation, power surges, neglect, unauthorized repair, or normal wear and tear. See our Return Policy for warranty-claim instructions.
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