1. Sensors Industrial Automation Control For Sale
  2. sku: 21897222824537632
  3. ALLEN BRADLEY 1741-B50C

ALLEN BRADLEY 1741-B50C Plc Modules

1741-b50c Allen Bradley / 1741b50c Used

( Brand: Allen Bradley ), ( Manufacturer Part Number: 1741-B50C ), ( Part Type: Module )

Review ALLEN BRADLEY 1741b50c Used

The **Allen-Bradley 1741-B50C** is a high-performance, modular **CompactLogix 5000** controller designed for industrial automation applications requiring robust processing power, advanced communication capabilities, and seamless integration with modern control systems. Part of Rockwell Automation s trusted **CompactLogix** series, this **1741-B50C** model is specifically engineered as a **500-point I/O base unit**, offering a compact yet powerful platform for controlling machinery, processes, and complex automation sequences in manufacturing, packaging, material handling, and other industrial environments. Built with a **1741-B50C CPU module**, this controller combines a **dual-core processor** with enhanced memory resources, enabling high-speed execution of control logic, real-time data processing, and efficient handling of large-scale applications. The **500-point I/O base** provides a scalable foundation, allowing users to expand functionality through additional **1741-Bxx** I/O modules, such as discrete I/O, analog I/O, communication modules, or special-purpose modules like motion control or safety interfaces. With **up to 256 MB of user memory**, the 1741-B50C supports extensive programming in **RSLogix 5000** or **Studio 5000**, including structured text, ladder logic, function block diagrams, and sequential function charts, making it versatile for both simple and highly complex control tasks.

One of the standout features of the **1741-B50C** is its **built-in communication ports**, including **two Ethernet ports** (one for standard communication and one for optional redundancy or high-speed data transfer) and a **serial port (RS-232/422/485)**, enabling seamless connectivity to PLCs, HMIs, SCADA systems, and other industrial devices. The controller also supports **EtherNet/IP**, **CIP (Common Industrial Protocol)**, and **Modbus TCP**, facilitating integration with Rockwell s **ControlLogix**, **PowerFlex** drives, **FactoryTalk** software, and third-party systems. Additionally, the **1741-B50C** incorporates **Rockwell s Safety over EtherNet/IP (SoE)** capability, allowing for the implementation of safety-rated control functions directly within the PLC, reducing the need for separate safety relays or PLCs. This integration enhances system reliability, reduces wiring complexity, and improves overall safety performance in hazardous environments.

Designed with **industrial durability in mind**, the **1741-B50C** operates within a **wide temperature range (-25 C to 60 C)** and is built to withstand the rigors of factory floors, including exposure to dust, moisture, and electrical noise. The **compact, DIN-rail-mountable chassis** ensures efficient space utilization in control panels, while the **modular design** allows for easy expansion and maintenance. The controller s **real-time clock (RTC)** and **watchdog timer** enhance system stability, ensuring continuous operation even in the event of power fluctuations. Furthermore, the **1741-B50C** supports **remote I/O and distributed control architectures**, making it ideal for applications requiring decentralized control or long-distance communication. Whether deployed in a **small-scale automation project** or as part of a **large-scale manufacturing system**, this controller delivers **high-speed processing, deterministic performance, and unmatched flexibility**, making it a cornerstone of modern industrial automation solutions.

### **Pros and Cons of buying a Allen-Bradley 1741-B50C PLC Module**

The **Allen-Bradley 1741-B50C** is a legacy **1741 Series** PLC module, specifically a **5-slot backplane chassis** designed for industrial automation. Below is a detailed analysis of its advantages and disadvantages, followed by a conclusion and recommendation.

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### **Pros of the 1741-B50C**

1. **Compatibility with Legacy Systems**

- The 1741 series was widely used in older industrial control systems (1990s early 2000s). If your facility still relies on this architecture, this chassis is a direct replacement for maintaining existing automation.

- Works seamlessly with **1746-Series** CPUs, **1756-Series** I/O, and other **1700/1740** modules, reducing the need for costly retrofitting.

2. **Reliability and Proven Performance**

- The 1741 series was built for industrial durability, with robust power supply handling and stable operation in harsh environments.

- Many users report long-term reliability, especially in applications where frequent module failures are a concern.

3. **Cost-Effective for Maintenance**

- Since the 1741 series is no longer in active production, purchasing a **used or refurbished** unit can be significantly cheaper than new alternatives.

- Avoids the premium pricing of newer PLC systems while still providing functional performance.

4. **Backplane Expansion Capability**

- The **5-slot backplane** allows for flexible I/O expansion, accommodating a variety of **1740-series** modules (analog, discrete, communication, etc.).

- Useful for applications requiring multiple input/output points without upgrading to a full-scale PLC system.

5. **Proven Software Support**

- Compatible with **RSLogix 500**, the original programming environment for the 1741 series, which remains widely available.

- No need for expensive migration to newer software (e.g., Studio 5000) unless upgrading the entire system.

6. **Industrial-Grade Build**

- Designed for **120VAC or 24VDC** power supply options, making it versatile for different power infrastructures.

- Rugged construction with proper cooling and shielding for industrial environments.

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### **Cons of the 1741-B50C**

1. **Obsolete Technology**

- **No longer manufactured** by Rockwell Automation, meaning parts and support are limited.

- Future compatibility with newer HMI, SCADA, or communication protocols (e.g., Ethernet/IP, Modbus TCP) may require additional adapters or gateways.

2. **Limited Availability of Spare Parts**

- Finding **authentic OEM replacements** for failed modules (e.g., power supplies, backplanes) can be difficult and expensive.

- Third-party or refurbished parts may have **unknown reliability** compared to original components.

3. **Outdated Communication Protocols**

- Primarily uses **serial communication (e.g., DH-485, DH )** rather than modern Ethernet-based protocols.

- Integrating with newer SCADA systems or cloud platforms may require **additional converters or bridges**.

4. **Scalability Limitations**

- The **5-slot backplane** is relatively small compared to modern PLCs, which may limit future expansion needs.

- If the system grows, migrating to a **ControlLogix (1756) or CompactLogix (1769)** platform may be necessary, adding complexity.

5. **Programming and Training Challenges**

- **RSLogix 500** is outdated compared to modern IDEs like **Studio 5000**, which may require retraining engineers.

- Fewer engineers are familiar with legacy 1741 programming, increasing maintenance risks.

6. **Power Supply and Compatibility Issues**

- Some **1741 power supplies** are no longer available, requiring alternative solutions (e.g., external power adapters).

- Incompatibility with newer **bus couplers or communication modules** may arise without proper adapters.

7. **Security Vulnerabilities**

- Older PLCs lack modern **cybersecurity features** (e.g., encryption, firewall integration, firmware updates).

- More susceptible to **unauthorized access or malware** if connected to modern networks.

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### **Conclusion**

The **Allen-Bradley 1741-B50C** remains a **viable option** for facilities that **must maintain legacy 1741/1746 systems** due to cost, compatibility, or operational constraints. Its **reliability, cost-effectiveness, and proven performance** make it suitable for **short-term maintenance or stable, non-expanding applications**.

However, if the system is **critical to long-term operations**, the risks of **part obsolescence, limited support, and scalability issues** should be carefully considered. For **new installations or future-proofing**, migrating to a **modern PLC platform (e.g., ControlLogix, CompactLogix, or even Allen-Bradley s newer micro800 series)** is strongly recommended.

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### **Recommendation**

- **Buy the 1741-B50C if:**

- Your system **relies entirely on 1741/1746 architecture** and upgrading is not feasible.

- You have **limited budget** and need a **short-term solution** for maintenance.

- You can **source spare parts reliably** (preferably from authorized refurbishers or stockists).

- The application is **stable and not expected to expand** significantly.

- **Avoid or Replace with if:**

- You plan to **modernize the system** in the near future upgrading now will save long-term costs.

- **Critical control functions** depend on this PLC, and downtime risks are unacceptable due to part unavailability.

- You need **Ethernet/IP, cloud connectivity, or advanced security** modern PLCs provide these features.

- **Training or engineering resources** are limited, as newer platforms may require upskilling.

**Alternative Considerations:**

- **Refurbished 1741-B50C** (from authorized sources like **Rockwell Automation s refurbished inventory** or **specialized PLC dealers**).

- **Migration to a 1756 (ControlLogix) or 1769 (CompactLogix) chassis** if budget allows, ensuring long-term support.

- **Third-party PLCs (e.g., Siemens, Mitsubishi, or even Allen-Bradley s newer micro800)** for a balance between cost and future compatibility.

Ultimately, the decision depends on **budget, system criticality, and long-term operational strategy**. If the 1741-B50C fits within a **controlled, short-term maintenance plan**, it can be a practical choice. Otherwise, investing in a **modern PLC upgrade** will likely yield better long-term reliability and flexibility.

Details:

All products are guaranteed to be working but may show signs of use if purchasing a used product. ALLEN BRADLEY 1741-B50C / 1741B50C USED OUTPUT MODULE 10-50V DC 4 OUTPUTS. Sells new and surplus product develops channels to purchase such. 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 #: 1741b50c prices

  • $30.00-$218.61

specifications sensoindustria:

  • brand: Allen Bradley
  • mpn: 1741-b50c
  • part type: Module

offer sensoindustria:

  • quantity: 1
  • sold: 0
  • started: April 4, 2026
  • options: Ship-to-home
  • availability: In Stock

seller sensoindustria:

  • rating: 99.6%
  • # reviews: 197809
  • city: 1 Millennium Dr, Willingboro, NJ 08046

returns sensoindustria:

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

payments sensoindustria:

  • other
  • credit card: Mastercard
  • wallet: Paypal

shipping sensoindustria:

  • class: Standard
  • cost: $12.90
  • service: Standard
  • type: Fixed
  • transit: 29-34 Days

general sensoindustria:

  • PLCs HMIs > PLC Peripheral Modules > PLC Input Output Modules
  • condition: Used
part type: module,
category: business & industrial > plcs hmis > plc peripheral modules > plc input output modules, sku: 21897222824537632,
Allen Bradley 1741-B50C Is Similar To:
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4 offers $30.00–$218.61 USD
  • New – Open box. Offer #1 priced at $50.00 + $16.50 shipping estimate = $66.50* total. +$16.50 shipping
  • Used. Offer #2 priced at $30.00 + $16.50 shipping estimate = $46.50* total. This is used, but it is in good, clean and well working item.+$16.50 shipping
  • Used. Offer #3 priced at $218.61 + $12.90 shipping estimate = $231.51* total. FACTORY WARRANTY MAY NOT APPLY ALLEN BRADLEY / 1741B50C (USED) OUTPUT MODULE 10-50V DC 4 OUTPUTS.+$12.90 shipping
  • Used. Offer #4 priced at $10.95 + $18.15 shipping estimate = $29.10* total. I/O Module. Allen Bradley.+$18.15 shipping

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