Genuine Allen-Bradley 1756-IF8I ControlLogix 1756 - Industrial Automation Part

Allen-Bradley 1756-IF8I ControlLogix 1756 - Front Panel and Connectivity View

Allen-Bradley 1756-IF8I ControlLogix 1756 - Technical Label and Specifications

Allen-Bradley 1756-IF8I 8-Channel Isolated Analog Input Module – ControlLogix

Description

Allen-Bradley 1756-IF8I 8-Channel Isolated Analog Input Module – ControlLogix Series

Imagine a critical process line — a chemical reactor, an oil & gas pipeline, or a precision pharmaceutical batch system — suddenly losing accurate sensor feedback. Without a reliable isolated analog input module, field signals from pressure transmitters, temperature sensors, and flow meters become corrupted by ground loops and electrical noise, triggering false alarms, unplanned shutdowns, and costly production losses. The Allen-Bradley 1756-IF8I is the engineered solution that stands between your process and catastrophic signal failure.

The 1756-IF8I occupies a distinguished position within Rockwell Automation’s ControlLogix 1756 platform — the world’s most widely deployed high-performance PLC architecture in heavy industry. As an 8-channel individually isolated analog input module, it delivers channel-to-channel and channel-to-backplane isolation that eliminates ground loop interference, making it the preferred choice for demanding applications across energy, automotive, food & beverage, and process manufacturing sectors globally.

Technical Specifications

Part Number / SKU: 1756-IF8I
Brand: Allen-Bradley (Rockwell Automation)
Series: ControlLogix 1756
Module Type: Analog Input Module
Number of Channels: 8 (individually isolated)
Input Signal Types: Voltage (±10V, 0–10V, 0–5V, 1–5V) and Current (0–20mA, 4–20mA)
Resolution: 16-bit
Isolation: Channel-to-channel and channel-to-backplane isolated
Backplane Current: 250mA @ 5VDC; 3mA @ 24VDC
Operating Temperature: 0°C to 60°C (32°F to 140°F)
Storage Temperature: -40°C to 85°C (-40°F to 185°F)
Relative Humidity: 5% to 95% non-condensing
Dimensions (H × W × D): 94.0 × 94.0 × 58.0 mm (3.70 × 3.70 × 2.28 in)
Weight: Approx. 220 g
Certifications: UL, CE, C-Tick
Compatible Backplane: ControlLogix 1756 chassis

Key Features & Benefits

Individual Channel Isolation: Each of the 8 channels is fully isolated from all others and from the backplane, eliminating ground loops that corrupt signal integrity in multi-sensor environments.
16-Bit Resolution: Delivers high-precision analog-to-digital conversion for accurate process monitoring and control, critical in tight-tolerance manufacturing.
Flexible Input Ranges: Supports both voltage and current signal types, allowing a single module to interface with diverse field instruments without additional signal conditioners.
Hot-Swap Capability: Modules can be inserted and removed from a powered ControlLogix chassis without system shutdown, maximizing uptime in 24/7 operations.
Real-Time Diagnostics: Built-in over-range, under-range, and open-wire detection with fault reporting to the controller, enabling predictive maintenance strategies.
Producer/Consumer Communication: Leverages ControlLogix’s native multicast data sharing, allowing multiple controllers to consume the same input data simultaneously.
Noise Immunity: Designed to operate reliably in electrically noisy industrial environments, meeting IEC 61000 EMC standards.

Industry & Equipment Applications

Oil & Gas: Pipeline pressure and flow monitoring, wellhead control systems, SCADA integration
Chemical Processing: Reactor temperature profiling, pH and conductivity measurement, batch control
Automotive Manufacturing: Robotic welding force feedback, paint booth environmental monitoring, press tonnage control
Food & Beverage: Pasteurization temperature control, filling line weight measurement, CIP process monitoring
Power Generation: Turbine vibration and temperature monitoring, boiler drum level control
Pharmaceutical: Cleanroom environmental monitoring, bioreactor parameter control, FDA 21 CFR Part 11 compliant systems
Water & Wastewater: Flow, pressure, and level measurement in treatment plants

System Integration & Compatible Parts

The 1756-IF8I is designed for seamless integration within the Allen-Bradley ControlLogix ecosystem. Compatible and commonly paired components include:

Controllers: 1756-L71, 1756-L72, 1756-L73, 1756-L74, 1756-L75, 1756-L81E, 1756-L82E, 1756-L83E, 1756-L84E, 1756-L85E
Chassis: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Power Supplies: 1756-PA72, 1756-PB72, 1756-PA75, 1756-PB75
Communication Modules: 1756-EN2T, 1756-EN2TR, 1756-EN3TR (EtherNet/IP); 1756-CN2 (ControlNet); 1756-DNB (DeviceNet)
Wiring Arm: 1756-TBNH, 1756-TBSH (field wiring arm for I/O termination)
Programming Software: Studio 5000 Logix Designer (v21.00 and later recommended)

Our Quality Assurance Process

At Konmask.com, every Allen-Bradley 1756-IF8I module undergoes a rigorous multi-stage verification process before shipment:

Source Verification: All units are sourced from authorized distributors or directly from certified supply chains with full traceability documentation.
Visual Inspection: Physical examination for label authenticity, connector integrity, PCB condition, and housing damage.
Functional Testing: Where applicable, modules are bench-tested to verify communication and basic operational parameters.
Documentation Package: Each shipment includes a certificate of conformity, test report, and original manufacturer documentation where available.
Secure Packaging: ESD-safe anti-static packaging with moisture barrier bags and shock-absorbing foam inserts for international transit.

How to Order

Submit an inquiry via our Request a Quote form on this page or email support@konmask.com
Provide your required quantity, delivery timeline, and destination country
Our technical team will respond within 24 business hours with availability, lead time, and a formal quotation
Upon order confirmation, we arrange secure packaging and international logistics with full tracking
Post-delivery technical support is available for integration and commissioning questions

Why Choose Konmask.com?

✅ Specialized in Industrial Automation: We focus exclusively on PLC, DCS, HMI, and automation components — not a generalist marketplace.
✅ Global B2B Supply: Serving engineering firms, system integrators, and MRO procurement teams across 50+ countries.
✅ Technical Expertise: Our team includes experienced automation engineers who can advise on compatibility, alternatives, and system design.
✅ Competitive Lead Times: Extensive supplier network enables fast sourcing of both current and legacy/obsolete parts.
✅ Transparent Documentation: Full traceability and quality documentation provided with every order.
✅ Responsive Support: Dedicated account managers for B2B clients with volume requirements.

Frequently Asked Questions

Q: What is the difference between 1756-IF8I and 1756-IF8?
A: The key difference is isolation. The 1756-IF8I provides individual channel-to-channel and channel-to-backplane isolation, making it suitable for applications where sensors share different ground references. The 1756-IF8 (non-isolated) is a lower-cost option for applications where all sensors share a common ground.

Q: Is the 1756-IF8I compatible with Studio 5000 Logix Designer?
A: Yes. The 1756-IF8I is fully supported in Studio 5000 Logix Designer and RSLogix 5000. It is recommended to use firmware revision 20 or later for full feature support including enhanced diagnostics.

Q: Can the 1756-IF8I be used in a redundant ControlLogix system?
A: Yes. The 1756-IF8I supports ControlLogix redundancy configurations when used with the appropriate redundancy modules (1756-RM2, 1756-RM2XT) and redundancy-enabled firmware.

Q: What field wiring arm is required for the 1756-IF8I?
A: The 1756-IF8I uses the 1756-TBNH (36-pin, cage clamp) or 1756-TBSH (36-pin, screw clamp) removable terminal block for field wiring connections.

Q: Do you supply both new and refurbished units?
A: We supply new, surplus-new (unused), and professionally refurbished units depending on availability and customer requirements. All units are clearly identified by condition in the quotation.

Q: What is the typical lead time for the 1756-IF8I?
A: Lead time varies by stock availability. In-stock units typically ship within 3–5 business days internationally. For sourced units, lead time is typically 2–4 weeks. Contact us for current availability.

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