ALLEN BRADLEY 100-FB11 Automation

( Brand: Allen Bradley ), ( Manufacturer Part Number: 100-FB11 )

Review ALLEN BRADLEY 100fb11 Used

The **Allen-Bradley 100-FB11 (100FB11)** is a high-performance, compact **110-volt, 120-volt, or 230-volt AC motor starter** designed for reliable control of three-phase induction motors in industrial, commercial, and automation applications. Part of Rockwell Automation s **PowerFlex** series, this motor starter is engineered to provide robust protection, precise control, and seamless integration into PLC-based or standalone motor control systems. With a **NEMA 1 or NEMA 4X** enclosure option, the 100-FB11 is built to withstand harsh environmental conditions, including dust, moisture, and corrosive atmospheres, making it ideal for demanding manufacturing, HVAC, pumping, and conveyor systems. Its **compact footprint** allows for efficient panel space utilization, while the **modular design** enables easy customization with optional accessories such as overload relays, auxiliary contacts, or digital communication interfaces like **DeviceNet** or **ControlNet** for advanced monitoring and diagnostics.

At its core, the 100-FB11 features a **magnetic contactor** with **three sets of heavy-duty main contacts** rated for continuous operation, ensuring reliable motor starting, stopping, and reversing (when paired with a reversing contactor). The starter incorporates **thermal overload protection** via integrated **Allen-Bradley overload relays**, which provide adjustable trip settings to prevent motor damage from overloads, stalling, or short circuits. For enhanced safety, it includes **auxiliary contacts** (normally open or normally closed) that can be wired into control circuits for signaling, interlocking, or fault detection. The starter s **low-inrush design** minimizes voltage drops during startup, reducing stress on the power supply and improving system efficiency, particularly in applications with sensitive equipment or long motor leads.

The 100-FB11 is compatible with a wide range of **three-phase AC motors** (single-speed or multi-speed) and can be configured for **manual, automatic, or PLC-controlled operation** via its **NO/NC control terminals**. Its **plug-in terminal design** simplifies wiring and maintenance, allowing for quick replacement of components without extensive downtime. For applications requiring **remote monitoring or energy management**, the starter can be integrated with **Allen-Bradley s FactoryTalk View** or other SCADA systems, enabling real-time performance tracking, predictive maintenance, and energy optimization. Additionally, the starter s **compliance with UL, CSA, and IEC standards** ensures it meets stringent safety and performance requirements for global industrial applications.

Whether deployed in **food and beverage processing, chemical plants, water treatment facilities, or material handling systems**, the 100-FB11 delivers **durability, efficiency, and flexibility** to meet diverse motor control needs. Its **sealed contacts** resist corrosion and wear, extending the starter s operational lifespan, while its **low-noise operation** contributes to a quieter, more comfortable working environment. With **Rockwell Automation s extensive documentation and technical support**, engineers and electricians can confidently specify, install, and troubleshoot the 100-FB11, ensuring seamless integration into existing control architectures. Overall, this motor starter represents a **cost-effective, high-reliability solution** for industries demanding precise, dependable motor control in demanding operational conditions.

### **Pros and Cons of buying a Allen-Bradley 100-FB11 (100FB11) Flex I/O Module**

#### **Overview**

The **Allen-Bradley 100-FB11 (100FB11)** is a **Flex I/O** module designed for use in **CompactLogix, ControlLogix, and other Allen-Bradley PLC systems**. It provides **16 digital inputs** (24V DC) and is commonly used for general-purpose input applications in industrial automation. Below is a detailed analysis of its advantages and disadvantages.

---

### **Pros**

1. **Compatibility with Allen-Bradley PLCs**

- The **100-FB11** is fully compatible with **CompactLogix, ControlLogix, and other AB PLCs** that support Flex I/O modules.

- Works seamlessly with **RSLogix 5000, Studio 5000, and FactoryTalk View** software.

- Supports **EtherNet/IP, DeviceNet, and ControlNet** communication protocols, making it versatile for different network setups.

2. **Reliable and Industrial-Grade Construction**

- Built to withstand **industrial environments**, including temperature variations, vibration, and electrical noise.

- **NEMA 4X-rated enclosure** (when installed in a compatible housing) provides protection against dust, water, and corrosion.

- **Long lifespan** due to high-quality components from Rockwell Automation.

3. **Simple and Cost-Effective for Basic Input Applications**

- Provides **16 dry-contact inputs (24V DC)**, making it ideal for **limit switches, push buttons, and proximity sensors**.

- No additional programming complexity plug-and-play functionality with minimal configuration.

- **Lower cost** compared to specialized I/O modules with additional features (e.g., analog inputs, high-speed counting).

4. **Easy Installation and Wiring**

- **Terminal block wiring** simplifies installation, reducing downtime.

- **Hot-swappable** in most Allen-Bradley PLC systems, allowing for maintenance without full system shutdown.

- Supports **standard wiring practices**, making it accessible for technicians without advanced expertise.

5. **Good Documentation and Support**

- **Comprehensive manuals and datasheets** available from Rockwell Automation.

- **Widely supported** in the industrial automation community, with abundant troubleshooting resources online.

- **Rockwell Automation s global support network** ensures availability of spare parts and technical assistance.

6. **Scalability for Small to Medium Control Systems**

- Can be expanded with additional **Flex I/O modules** (e.g., 100-FB12 for analog inputs, 100-FB16 for high-speed counting).

- Works well in **small automation projects** where only digital inputs are required.

---

### **Cons**

1. **Limited to Digital Inputs Only**

- The **100-FB11 is strictly for digital inputs (24V DC)** it does **not** support analog signals, high-speed counting, or other specialized functions.

- If your application requires **analog inputs (0-10V, 4-20mA), temperature sensing, or high-speed I/O**, you would need to purchase additional modules (e.g., **100-FB12, 100-FB16**), increasing cost.

2. **No Built-in Diagnostics for Inputs**

- Unlike some newer Allen-Bradley modules, the **100-FB11 lacks advanced diagnostics** (e.g., input fault monitoring, signal strength analysis).

- Troubleshooting **open or shorted inputs** may require manual inspection or additional external monitoring.

3. **Potential Compatibility Issues with Older PLCs**

- While it works with **most modern Allen-Bradley PLCs**, some **very old or non-Flex I/O compatible systems** may not support it.

- Always verify **firmware and driver compatibility** before purchasing.

4. **Limited Expansion Capabilities**

- If your system requires **more than 16 digital inputs**, you must add **multiple 100-FB11 modules**, which can increase wiring complexity.

- Some newer **CompactLogix or ControlLogix models** offer **integrated I/O**, which may be more efficient for large-scale applications.

5. **Discontinued Status (Potential Obsolescence Risk)**

- **Longer lead times** for replacement units.

- **Higher resale prices** due to scarcity.

- **Limited stock availability** from authorized distributors.

- If you need **long-term support**, consider **alternative modules** (e.g., **1769-FB11**, a newer Flex I/O variant).

6. **No Built-in Isolation for High-Voltage Applications**

- The module **does not provide galvanic isolation** between inputs and the PLC, which can be a concern in **high-voltage or noisy environments**.

- Additional **optocouplers or isolation amplifiers** may be required for sensitive applications.

7. **Software Dependency on Allen-Bradley Ecosystem**

- If you are **not using Allen-Bradley PLCs**, this module is **not compatible** with third-party systems (e.g., Siemens, Schneider, or Beckhoff).

- Migration to a **different automation platform** would require replacing the entire I/O system.

---

### **Conclusion**

The **Allen-Bradley 100-FB11 (100FB11)** is a **reliable, cost-effective solution for basic digital input applications** in Allen-Bradley PLC systems. It excels in **simplicity, compatibility, and industrial durability**, making it a **good choice for small to medium control systems** where only digital inputs are needed.

However, its **lack of analog support, limited diagnostics, and potential obsolescence** mean it may **not be the best long-term investment** for applications requiring **advanced I/O functions or future scalability**. Additionally, since it is **discontinued**, purchasing it now may lead to **higher costs and supply chain challenges** in the future.

---

### **Recommendation**

You are **using an Allen-Bradley PLC system** (CompactLogix, ControlLogix, etc.).

Your application **only requires 16 digital inputs (24V DC)**.

You need a **quick, reliable, and low-cost solution** for a **small-scale project**.

You have **no immediate plans to expand I/O requirements** beyond digital inputs.

You can **source spare parts easily** (or have a backup plan for obsolescence).

You need **analog inputs, high-speed counting, or temperature sensing** **100-FB12, 100-FB16, or 1769-FB11**.

Your system requires **long-term support and future-proofing** **Newer Flex I/O modules (e.g., 1769 series)** or **integrated I/O on newer PLCs**.

You are working in a **high-voltage or noisy environment** **Isolated I/O modules (e.g., 1769-IA16)**.

You want **better diagnostics and troubleshooting features** **1769-FB11 or newer Allen-Bradley modules**.

You are **not locked into Allen-Bradley** and want **third-party compatibility** **Siemens, Schneider, or Beckhoff I/O modules**.

If possible, **upgrade to a newer Flex I/O module (e.g., 1769-FB11)** or **integrated I/O on a CompactLogix 5380/5480** to ensure **future compatibility, better diagnostics, and easier expansion**. However, if you have an **immediate need for a 100-FB11**, proceed with caution regarding **supply chain risks**.

Would you like recommendations on **where to purchase** or **how to verify compatibility** with your specific PLC model?

Details:

Sells new and surplus product develops channels to purchase such. All products are guaranteed to be working but may show signs of use if purchasing a used product. Call to use a shipping service other than the ones listed. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

part #: 100fb11 prices

• $18.70-$29.99

specifications automationjack:

• brand: Allen Bradley
• mpn: 100-fb11

returns automationjack:

• method: Money back
• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

seller automationjack:

• # reviews: 202772
• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.7%

payments automationjack:

• other
• wallet: Apple-pay
• credit card: Visa

offer automationjack:

• availability: In Stock
• started: May 6, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0

general automationjack:

• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
• condition: Used

shipping automationjack:

• service: Standard
• transit: 24-37 Days
• cost: $12.90
• class: Standard
• type: Fixed

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