ALLEN-BRADLEY IILLC-002558 Spectrum Compactlogix Module 1769-IF8 1769SC-IF8U 1F8U Point

( Brand: Allen-bradley ), ( Manufacturer Part Number: IILLC-002558 ), ( Model: 1769-IF8/A 1769-1F8 1769-IFB 1769-1FB ), ( Type: Plc Input Module ), ( Price Is For Each: Price Is For One Item Only. ), ( Parent Company: Rockwell Automation Ab A-b ), ( Unspsc: 32151705 ), ( Analog/digital: Analog ), ( Oem Lifecycle Status: Active ), ( Controller Platform: Compactlogix ), ( Oem Product Description: Compactlogix 8 Pt Analog Input Module )

Review ALLEN BRADLEY Spectrum Compactlogix Input Module Point

The **Allen-Bradley 1769-IF8U CompactLogix Control Module** (part number **1769-IF8U**, also referenced as **IILC-002558** in some documentation) is a high-performance, modular input/output (I/O) device designed for integration into the **Spectrum 1769** series of CompactLogix programmable logic controllers (PLCs). This **8-point, isolated digital input module** (with a **1F8U** designation indicating its specific I/O type) is engineered to provide reliable, high-speed data acquisition for industrial automation applications requiring precise control and monitoring. Built to operate within the **1769-SC** series of CompactLogix controllers, this module is part of Allen-Bradley s robust **ControlLogix** architecture, ensuring seamless compatibility with other modules in the same family while adhering to the **EtherNet/IP** communication protocol for efficient networked control.

The **1769-IF8U** features **8 isolated, normally open (NO) digital inputs**, each capable of handling a wide range of voltage signals, including **24V DC, 115V AC, or 230V AC**, making it versatile for interfacing with a variety of sensors, switches, and control devices. Each input channel is **optically isolated**, providing protection against electrical noise, voltage spikes, and ground loops, which is critical in harsh industrial environments where reliability is paramount. The module s **1769-SC** designation signifies its compatibility with the **Spectrum 1769** platform, a high-performance PLC series optimized for applications demanding high-speed processing, advanced motion control, and deterministic communication. With a **scan rate of up to 100 s** (microseconds), this module ensures minimal latency, making it ideal for applications requiring real-time data acquisition, such as machine vision systems, robotic control, or high-speed packaging operations.

Physically, the **1769-IF8U** is a **compact, DIN-rail or panel-mountable module** with a **1-slot width** design, allowing for easy integration into existing control panels or distributed I/O architectures. Its **backplane-mounted** configuration ensures secure and stable connections, while the **LED indicators** provide quick visual feedback on module status, input activity, and communication health. The module supports **EtherNet/IP** for seamless integration into Allen-Bradley s **ControlNet, DeviceNet, or other industrial Ethernet networks**, enabling centralized monitoring and control via **FactoryTalk View Studio, Studio 5000, or other HMI/SCADA systems**. Additionally, the **1769-IF8U** is compatible with **Allen-Bradley s Spectrum 1769 firmware**, which includes advanced features such as **deterministic communication, enhanced security protocols, and improved diagnostic capabilities**, ensuring long-term reliability and ease of maintenance.

From a technical standpoint, the **1769-IF8U** is designed with **industrial-grade components**, including **high-temperature resistors, reinforced connectors, and robust enclosure materials**, to withstand extreme environmental conditions, such as temperature fluctuations (operating range of **-20 C to 60 C**), humidity levels (up to **95% non-condensing**), and exposure to dust and vibration. Its **backplane power supply** ensures consistent operation without additional wiring complexity, while the **isolated inputs** prevent ground loops and electromagnetic interference (EMI), which can degrade signal integrity in noisy industrial settings. The module s **1F8U** designation further clarifies its function as a **digital input module**, distinguishing it from other I/O types such as analog or output modules within the same series.

For engineers and technicians, the **1769-IF8U** offers **plug-and-play compatibility** with the **CompactLogix 1769-SC** series, reducing configuration time and minimizing potential errors during installation. Its **deterministic scan performance** and **low-latency communication** make it an excellent choice for applications requiring precise timing, such as **synchronized motion control, high-speed sorting systems, or automated testing equipment**. Whether deployed in a **centralized control cabinet or a distributed I/O architecture**, this module delivers the **speed, reliability, and flexibility** demanded by modern industrial automation systems. With **Allen-Bradley s reputation for quality and innovation**, the **1769-IF8U** represents a dependable solution for engineers seeking to enhance the efficiency and performance of their control systems.

### **Pros and Cons of buying a Allen-Bradley 1769-IF8U CompactLogix Module (2014 Model)**

1. **Compatibility and Integration** The 1769-IF8U is a high-performance analog input module designed specifically for the Allen-Bradley CompactLogix series (e.g., 1769-L30ERM, 1769-L32ERM, 1769-L33ERM). It integrates seamlessly with existing PLC systems, ensuring smooth operation and minimal configuration issues.

2. **High-Resolution Analog Inputs** The module provides **16-bit resolution** (vs. 12-bit on some older models), improving measurement accuracy for processes requiring precise analog signals (e.g., temperature, pressure, flow).

3. **Wide Input Range Support** It supports ** 10V, 5V, 0 10V, 0 5V, 4 20mA, and 0 20mA** inputs, making it versatile for various industrial applications, including sensor interfaces.

4. **Isolation and Noise Immunity** Each input channel is **galvanically isolated**, reducing the risk of ground loops and improving reliability in noisy environments.

5. **Reliability and Longevity** As a **2014 model**, it is a well-established product with a proven track record in industrial automation. Allen-Bradley (now Rockwell Automation) modules of this era are known for durability, especially when maintained properly.

6. **Backward and Forward Compatibility** While designed for newer CompactLogix controllers, it can often be used with older systems (e.g., SLC 500, PLC-5) with proper configuration, though performance may vary.

7. **Easy to Install and Configure** The module follows standard CompactLogix mounting and wiring standards, reducing installation complexity. Configuration in **Studio 5000** or **RSLogix 5000** is straightforward.

8. **Cost-Effective for Analog Applications** Compared to newer high-end modules, the 1769-IF8U offers strong performance at a relatively reasonable price, making it a cost-effective choice for mid-range analog input needs.

---

1. **Age of the Model (2014)**

- While not obsolete, it is **not the latest generation**, meaning it lacks some features found in newer modules (e.g., 1769-IF8B, which may have improved diagnostics or communication protocols).

- Future firmware updates may be limited compared to newer models.

2. **Limited Channel Count** The **8-channel** configuration may be insufficient for applications requiring more analog inputs. Users needing higher channel counts may need multiple modules or a different model (e.g., 1769-IF8B with 8 channels but different features).

3. **No Built-in Diagnostics (Compared to Newer Models)**

- Some newer Allen-Bradley modules include **enhanced fault diagnostics** (e.g., input failure alerts, self-test capabilities). The 1769-IF8U relies on standard PLC monitoring, which may require additional programming for advanced troubleshooting.

4. **Potential Obsolescence Risks**

- While not immediately obsolete, **Rockwell Automation has phased out some older CompactLogix models**, and long-term availability of spare parts may become an issue.

- If upgrading to a newer controller (e.g., Micro800, Studio 5000 Logix Designer), compatibility may require additional considerations.

5. **Wiring and Space Constraints**

- The module requires **proper terminal block connections**, and improper wiring can lead to signal degradation or failure.

- In tight panel spaces, the physical size (though compact) may still be a consideration compared to newer, more integrated solutions.

6. **Software Dependency**

- Configuration requires **Studio 5000 or RSLogix 5000**, which may not be the latest software. Newer Allen-Bradley tools (e.g., **FactoryTalk View Studio**) may offer better visualization and integration.

7. **No Built-in Analog Outputs** If the application requires both input and output, additional modules (e.g., 1769-OF8B) would be needed, increasing system complexity.

---

### **Conclusion**

The **Allen-Bradley 1769-IF8U CompactLogix Analog Input Module (2014)** is a **reliable, cost-effective choice** for applications requiring **8-channel, high-resolution analog inputs** in a CompactLogix PLC system. It excels in **precision, isolation, and compatibility** with mid-range industrial processes. However, its **age, limited diagnostics, and potential long-term availability concerns** make it less ideal for future-proofing or high-channel-count applications.

For **new installations or long-term projects**, evaluating newer alternatives (e.g., **1769-IF8B, 1769-L33ERM with integrated I/O**) may be beneficial. For **existing systems where this module fits perfectly**, it remains a **solid, functional option** with minimal drawbacks.

---

### **Recommendation**

- You are maintaining or upgrading an **existing CompactLogix system** (e.g., 1769-L30ERM/L32ERM) that requires **8 analog inputs**.

- Your application demands **high-resolution (16-bit) analog measurements** with **galvanic isolation**.

- Budget constraints make newer modules impractical, and reliability is prioritized over cutting-edge features.

- You need **more than 8 channels** (e.g., 16 or 32 channels) **1769-IF8B or 1769-AI16DI**.

- Future-proofing is critical **Newer CompactLogix models (e.g., 1769-L33ERM) or Micro800 series**.

- Advanced diagnostics or **built-in output capabilities** are required **1769-OF8B or 1769-AI16DO**.

- Your system will be **long-term** (10 years) Evaluate **Rockwell s end-of-life (EOL) policies** for this module.

- If possible, **pair this module with a newer CompactLogix controller** (e.g., 1769-L33ERM) to balance cost and future flexibility.

- **Check for refurbished or surplus units** if budget is tight, ensuring they come from a reputable source.

Overall, the **1769-IF8U is a sound purchase for its intended use**, but careful consideration of system requirements and long-term needs will determine whether it is the optimal choice.

Details:

PLC Compact I/O CompactLogix Analog Input Module 8 Channel Universal. Lock: cc0116A-3. Catalog Number: 1769scIF8u, OEM: UNIVERSAL 8 PT ANALOG INPUT MODULE, Parent Company: Spectrum Control, Associated Rockwell Automation AB A-B, Universal Code UPC: 0, Class: Programmable Logic Control PLC, EAN: Family: PCs and Controllers, GTIN: 120, UNSPSC: 32151702, Lifecycle Status: ACTIVE. Surplus Unit Working Used 1769sc-IF8u P/R A F/R 1.3 Spectrum Controls Allen Bradley, 1769sc-1F8u 1769sc-IFBU 1769sc-1FBu, 1769scIF8u P/N 9060041-09 F/N 2050165-04 E 2014 Date.

part #: iillc002558 prices

• $145.97-$399.00

specifications sensoindustria:

• brand: Allen-bradley
• mpn: Iillc-002558
• model: 1769-if8/a 1769-1f8 1769-ifb 1769-1fb
• type: Plc Input Module
• price is for each: Price Is For One Item Only.
• parent company: Rockwell Automation Ab A-b
• unspsc: 32151705
• analog/digital: Analog
• oem lifecycle status: Active
• controller platform: Compactlogix
• oem product description: Compactlogix 8 Pt Analog Input Module

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• cost: $16.47
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• service: USPS Ground Advantage, UPS Next Day Air, UPS Ground
• class: Standard, One-day
• transit: 4-9 Days

returns sensoindustria:

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• time: 30 Days
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general sensoindustria:

• condition: Used
• PLCs HMIs > PLC Peripheral Modules > PLC Input Output Modules

seller sensoindustria:

• # reviews: 20478
• rating: 100.0%
• city: Columbia City, Indiana

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offer sensoindustria:

• sold: 0
• started: April 5, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 1

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