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The Allen-Bradley 1756-IF8IH is a 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. Ideal for monitoring HART smart transmitters in process control applications. 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.
Official Rockwell Automation 1756-IF8IH Technical Data
| Technical Specifications | |
| Catalog Number | 1756-IF8IH |
| 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 |
The 1756-IF8IH 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. For harsh or corrosive environments, the conformally coated 1756-IF8IHK variant is recommended. This listing is provided by an independent industrial automation distributor; brand names and part numbers are used for product identification only.
Warranty: 12-month seller warranty provided by SHLY-PLC. See our Return Policy for coverage and claims.
A: A ControlLogix 8-channel HART isolated analog input module for 0-20mA / 4-20mA current transmitters with HART 5/6/7 protocol support.
A: 16 to 21 bits, using a 24-bit Sigma-Delta ADC.
A: 1756-IF8IHK is the conformally coated version; electrical and environmental specs are identical, the coating protects against moisture and corrosive atmospheres.
A: 1756-TBCH, 1756-TBSH and 1756-TBNH 36-pin removable terminal blocks (torque 0.5 N·m).
1756-IF8IH · 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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