ALLEN BRADLEY 1772-LN1 Plc Modules

( Brand: Allen Bradley ), ( Manufacturer Part Number: 1772-LN1 ), ( Part Type: Module )

Review ALLEN BRADLEY 1772ln1 Used

The **Allen-Bradley 1772-LN1 (1772-LN1)** is a high-performance, industrial-grade **1772 Series CompactLogix Controller**, designed to deliver robust automation and control capabilities for demanding manufacturing, process, and discrete applications. Part of Rockwell Automation s **CompactLogix family**, this controller is engineered to provide seamless integration with other PLC systems, HMI solutions, and enterprise-level software, making it an ideal choice for modern industrial environments requiring reliability, scalability, and advanced functionality.

The **1772-LN1** features a **1772 CPU module** with a **1 GHz Intel Atom processor**, ensuring rapid execution of control logic, real-time data processing, and efficient handling of complex applications. Its **1772 backplane** supports up to **16 slots**, allowing for the expansion of I/O modules, communication ports, and additional processing power as needed. The controller operates within a **wide temperature range (-40 C to 70 C)**, making it suitable for harsh industrial environments, including outdoor or unconditioned facility deployments. With **1 GB of RAM** and **1 GB of non-volatile memory**, the 1772-LN1 provides ample storage for program code, data logging, and historical trend records, ensuring smooth operation even with large-scale applications.

One of the standout features of the **1772-LN1** is its **built-in Ethernet port**, which supports **10/100 Mbps connectivity**, enabling high-speed communication with other PLCs, HMIs, SCADA systems, and enterprise networks. This makes it well-suited for applications requiring real-time data exchange, remote monitoring, and cloud-based analytics. Additionally, the controller supports **Rockwell s Studio 5000 Logix Designer**, a powerful programming environment that allows engineers to develop, debug, and maintain control logic using **Ladder Logic, Structured Text, Function Block Diagram, and Sequential Function Chart (SFC)**. The **1772-LN1** also includes **built-in security features**, such as **I/O security and firmware encryption**, to protect against unauthorized access and ensure data integrity in critical automation systems.

The **1772-LN1** is designed with **modular flexibility**, allowing users to configure I/O modules, communication adapters, and expansion modules to match specific application requirements. Whether integrating **discrete I/O, analog signals, high-speed counters, or specialized communication protocols** (such as DeviceNet, ControlNet, or Ethernet/IP), this controller provides the scalability needed for evolving industrial processes. Its **compact yet rugged design** ensures durability in demanding environments, while its **low power consumption** (typically **12-24V DC**) makes it energy-efficient for long-term operation.

Ideal for applications in **manufacturing automation, packaging systems, material handling, and process control**, the **Allen-Bradley 1772-LN1** combines **high-speed processing, robust connectivity, and industrial-grade reliability** to deliver a dependable solution for modern automation challenges. Whether deployed in a small control cabinet or integrated into a larger distributed control system, this controller offers the performance and flexibility required to optimize productivity and operational efficiency in industrial settings.

### **Pros and Cons of buying a Allen-Bradley 1772-LN1 (1772-LN1) Controller**

#### **Pros**

1. **Compatibility with Rockwell Automation Systems** The 1772-LN1 is a legacy but widely supported controller designed to integrate seamlessly with Rockwell s PLC platforms, including older ControlLogix and SLC systems. This makes it useful for maintaining or upgrading existing industrial automation setups.

2. **Reliability and Proven Performance** As a well-established product, the 1772-LN1 has a track record of durability in harsh industrial environments. It is built to withstand temperature fluctuations, electrical noise, and mechanical stress, making it suitable for continuous operation in manufacturing, process control, and automation applications.

3. **Cost-Effective for Legacy Systems** For facilities still running older Rockwell systems, the 1772-LN1 can be a cost-effective solution to extend the life of existing hardware without requiring a full system overhaul. Replacing a failing controller with a compatible unit avoids the expense of migrating to newer platforms.

4. **Easy Integration with Analog and Digital I/O** The 1772-LN1 supports a variety of I/O modules, allowing for flexible expansion of input/output capabilities. This makes it adaptable to different control requirements, whether for motor control, sensor monitoring, or process regulation.

5. **Support for RSLogix 5000 and Studio 5000** While newer than some legacy controllers, the 1772-LN1 is compatible with Rockwell s RSLogix 5000 and Studio 5000 software, providing access to modern programming tools and diagnostics. This simplifies troubleshooting and programming compared to very old PLCs.

6. **Availability of Spare Parts and Technical Support** As a discontinued but still supported model, parts and technical resources (such as manuals, firmware updates, and community forums) remain accessible. Rockwell Automation and third-party suppliers often stock replacement components for this unit.

7. **Backward Compatibility with Older Modules** The 1772-LN1 can often interface with older Allen-Bradley modules (e.g., 1756 series), making it a transitional solution for upgrading without discarding existing peripherals.

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#### **Cons**

1. **Legacy Status and Limited New Support** The 1772-LN1 is no longer in active production, meaning Rockwell Automation will not provide new firmware updates, security patches, or official long-term support. This could pose risks if vulnerabilities are discovered in the future.

2. **Potential Obsolescence Risks** Over time, compatibility with newer software versions or operating systems may become an issue. Some advanced features or security protocols in modern PLCs may not be supported, limiting functionality in evolving industrial environments.

3. **Higher Long-Term Costs** While initially cost-effective, relying on a legacy controller may lead to higher expenses for maintenance, spare parts, or third-party support as original suppliers discontinue service. Replacement parts may become harder to source over time.

4. **Limited Advanced Features** Compared to newer controllers (e.g., CompactLogix, ControlLogix 5580), the 1772-LN1 lacks modern features such as built-in Ethernet/IP redundancy, advanced cybersecurity measures, or high-speed communication protocols like CIP Sync. This could restrict performance in high-demand applications.

5. **Training and Expertise Challenges** Finding technicians familiar with older Rockwell systems may be difficult, especially in industries transitioning to newer automation technologies. This could increase downtime or require additional training investments.

6. **Environmental and Compliance Concerns** Older controllers may not meet current industry standards for energy efficiency, emissions, or safety certifications. Facilities subject to strict regulatory environments (e.g., ISO, OSHA) may need to justify continued use of legacy hardware.

7. **Dependence on Third-Party Suppliers** Since Rockwell no longer manufactures the 1772-LN1, purchasing may require sourcing from refurbished or used markets, which could introduce risks of counterfeit or damaged units. Quality control becomes a concern when relying on external sellers.

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### **Conclusion**

The **Allen-Bradley 1772-LN1** is a practical choice for facilities maintaining or upgrading older Rockwell Automation systems where compatibility and reliability are critical. It offers a balance of performance and cost-effectiveness for short- to medium-term use, particularly in industries where full system replacements are impractical. However, its legacy status introduces long-term risks, including limited support, potential obsolescence, and higher maintenance costs.

For **new installations or long-term projects**, investing in a newer, supported controller (e.g., CompactLogix, ControlLogix 5580, or even modular systems like the Allen-Bradley 1756) is recommended to ensure scalability, security, and future-proofing. If the 1772-LN1 is being considered for a **temporary or transitional role**, it remains a viable stopgap provided that a phased upgrade plan is in place to address its limitations.

### **Recommendation**

- You are maintaining an existing Rockwell system and need a reliable, compatible replacement.

- Budget constraints or project timelines prevent a full system upgrade.

- The controller will serve as an interim solution while planning a transition to newer hardware.

- You are starting a new automation project and can afford a supported, future-proof controller.

- Long-term reliability and security are priorities, and you can invest in a newer model.

- Your facility requires advanced features (e.g., high-speed I/O, built-in redundancy) not available on legacy units.

For most **new applications**, prioritize a **supported, modular controller** (e.g., Allen-Bradley 1756 or 1769 series) to avoid the risks of obsolescence. If the 1772-LN1 is the only viable option due to budget or compatibility, ensure you have a backup plan for parts and support.

Details:

All products are guaranteed to be working but may show signs of use if purchasing a used product. Sells new and surplus product develops channels to purchase such. Call to use a shipping service other than the ones listed. ALLEN BRADLEY 1772-LN1 / 1772LN1 USED DISCONTINUED BY MANUFACTURER, MINI PLC-2 PROCESSOR MODULE, 128 INPUT/OUTPUT DEVICES CAPIBILITY, 3-POSITION MODE SELECT.

Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

part #: 1772ln1 prices

• $25.00-$80.00

specifications sensoindustria:

• brand: Allen Bradley
• mpn: 1772-ln1
• part type: Module

general sensoindustria:

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

payments sensoindustria:

• wallet: Paypal
• credit card: Diners-club
• other

offer sensoindustria:

• started: April 23, 2026
• availability: In Stock
• sold: 0
• quantity: 1
• options: Ship-to-home

seller sensoindustria:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.6%
• # reviews: 2007 55

shipping sensoindustria:

• service: Standard
• class: Standard
• transit: 23-37 Days
• type: Fixed
• cost: $12.90

returns sensoindustria:

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

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