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  3. ALLEN BRADLEY 1771-OA-001

ALLEN-BRADLEY 1771-OA-001 Module

1771-oa-001 Allen-bradley Used Output Module

( Brand: Allen-bradley ), ( Manufacturer Part Number: 1771-OA-001 ), ( Model: ALLEN BRADLEY 1771-OA-001 ), ( Part Type: Module )

Review ALLEN BRADLEY Used Output Module

The **Allen-Bradley 1771-OA-001** is a high-performance **1771 Series A CompactLogix Controller Output Module**, designed to deliver robust and reliable digital output control within industrial automation systems. Part of Rockwell Automation s modular CompactLogix platform, this module is engineered to provide seamless integration with other 1771 Series A components, enabling scalable and flexible control solutions for a wide range of applications. Featuring **16 isolated, normally open (NO) digital outputs**, each capable of driving loads up to **2 amps at 30 volts DC or 0.5 amps at 120 volts AC**, the 1771-OA-001 excels in environments where precise control of actuators, relays, solenoids, or other low-power devices is required. Its **isolated outputs** ensure safety and immunity to noise, reducing the risk of interference from harsh industrial conditions, while the **compact, DIN-rail mountable design** optimizes space efficiency in control panels. Built with **Allen-Bradley s industry-leading reliability**, this module incorporates **overcurrent protection** to safeguard connected loads from damage due to short circuits or overloads, enhancing system uptime and operational stability. Compatible with **RSLogix 5000, Studio 5000, and other Rockwell Automation software platforms**, the 1771-OA-001 allows for easy programming, monitoring, and diagnostics through the intuitive **ControlLogix architecture**, making it an ideal choice for manufacturers seeking a balance of performance, flexibility, and ease of integration. Whether deployed in discrete manufacturing, process control, or automation systems, this module delivers consistent performance in demanding industrial settings, ensuring reliable operation across a variety of applications.

### **Pros and Cons of buying a Allen-Bradley 1771-OA-001 Module**

The **Allen-Bradley 1771-OA-001** is an **1756 Programmable Logic Controller (PLC) Output Module**, specifically designed for **120V AC, 240V AC, or 24V DC outputs**. Below is a detailed analysis of its advantages and disadvantages.

---

### **Pros**

1. **Compatibility with Rockwell Automation Systems**

- The 1771-OA-001 is fully compatible with **Allen-Bradley PLC-5, SLC 500, and ControlLogix** systems, making it a reliable choice for existing Rockwell Automation setups.

- Works seamlessly with **Studio 5000, RSLogix 5000, and RSLogix 5/500** software for programming and diagnostics.

2. **High Reliability and Durability**

- Built to industrial standards, this module is designed for **harsh environments**, including temperature variations, vibration, and electrical noise.

- Uses **solid-state relays (SSR)** for output switching, reducing wear compared to mechanical relays.

3. **Flexible Voltage Support**

- Supports **three output voltage options**:

- **120V AC** (for standard U.S. applications)

- **240V AC** (for high-power applications in Europe, Asia, and other regions)

- **24V DC** (for low-power control signals)

- This versatility allows it to be used in a wide range of industrial applications.

4. **High Current Capacity**

- Each output can handle **up to 10A (AC) or 2A (DC)**, making it suitable for driving motors, solenoids, and other high-power loads.

- The module includes **fuses for overload protection**, preventing damage from short circuits.

5. **Easy Installation and Wiring**

- **Terminal block design** simplifies wiring, reducing installation time.

- **LED indicators** provide quick visual feedback on module status (power, fault, output state).

- **Hot-swappable** in most Rockwell systems, allowing for maintenance without shutting down the PLC.

6. **Long Lifespan and Low Maintenance**

- Solid-state components have **no moving parts**, reducing failure risk over time.

- Minimal maintenance required beyond routine inspections and fuse checks.

7. **Backward and Forward Compatibility**

- Works with **older PLC-5 systems** as well as **newer ControlLogix** controllers.

- Supports **Ethernet/IP, DH-485, and other communication protocols** for modern integration.

8. **Industrial-Grade Protection**

- **IP20 rating** (standard for most PLC modules) provides basic protection against dust and accidental contact.

- **Surge protection** helps mitigate electrical transients.

9. **Cost-Effective for High-Volume Applications**

- While not the cheapest module, its **durability and reliability** make it cost-effective in long-term industrial use.

- Replacement parts and support are widely available due to its widespread adoption.

10. **Documentation and Support**

- **Comprehensive manuals** and **technical support** from Rockwell Automation.

- **Large user community** means troubleshooting resources are readily available.

---

### **Cons**

1. **Limited to Rockwell Automation Ecosystem**

- **Not compatible with third-party PLCs** (e.g., Siemens, Mitsubishi, Schneider).

- If migrating to a different automation platform, this module may become obsolete.

2. **Higher Cost Compared to Alternatives**

- More expensive than **generic or aftermarket modules** with similar specifications.

- Pricing can be a barrier for small businesses or budget-conscious projects.

3. **Fuse Replacement Requirement**

- Each output has **internal fuses** that must be replaced if blown, adding minor maintenance overhead.

- Some users prefer **external fuse blocks** for easier replacement.

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

- While suitable for **240V AC**, it does not include **optical isolation** for extreme high-voltage or high-noise environments.

- In such cases, additional **isolated drivers** may be needed.

5. **Physical Size and Space Constraints**

- Part of the **1756 series**, which is **larger than some compact PLC modules** (e.g., 1769 series).

- May require **additional rack space** in control panels.

6. **Deprecation in Favor of Newer Modules**

- Rockwell has **phased out some older 1756 modules** in favor of the **1769 series** (e.g., 1769-OA08).

- Future support (firmware updates, parts) may be **limited** compared to newer models.

7. **Potential for Compatibility Issues with Very Old Systems**

- While it works with **PLC-5 and SLC 500**, very outdated systems may require **additional adapters or firmware updates**.

- Some **legacy configurations** may not support all features.

8. **No Built-in Diagnostics for Output Failures**

- While LEDs indicate **power and fault states**, **fine-grained output diagnostics** (e.g., per-point failure logging) may require additional software.

- Unlike some newer modules, it does not always provide **real-time output status updates** without polling.

9. **Limited Expansion Options**

- The **1756 chassis** has **fewer slots** compared to newer **1769 or 1771-A series**, restricting future expansion.

- If additional I/O is needed, a **separate rack** may be required.

10. **Environmental Limitations**

- While robust, it is **not rated for extreme environments** (e.g., high humidity, corrosive atmospheres, or high vibration without additional protection).

- For such conditions, **enclosed or NEMA-rated versions** may be necessary.

---

### **Conclusion**

The **Allen-Bradley 1771-OA-001** is a **reliable, high-performance output module** ideal for **Rockwell Automation-based industrial control systems**. Its **flexibility in voltage support, high current capacity, and compatibility with legacy and modern PLCs** make it a strong choice for applications requiring **durability and ease of integration**.

However, its **higher cost, limited third-party compatibility, and potential obsolescence** (as Rockwell shifts to newer series) should be considered. If **long-term support and Rockwell ecosystem integration** are priorities, this module remains a **solid investment**. For **budget-sensitive or non-Rockwell projects**, alternatives like **generic 1756 replacements or newer 1769 modules** may be more cost-effective.

---

### **Recommendation**

- **Buy the 1771-OA-001 if:**

- You are **already using a Rockwell Automation system** (PLC-5, SLC 500, or ControlLogix).

- You need **24V DC, 120V AC, or 240V AC outputs** with **high current (up to 10A AC)**.

- **Reliability and long-term support** are critical for your application.

- You require **easy integration with Studio 5000 or RSLogix software**.

- **Consider alternatives if:**

- You are **not using Rockwell PLCs** and need third-party compatibility.

- You are working on a **tight budget** and can find a **generic or newer 1769 module** at a lower cost.

- Your application requires **optical isolation, higher IP ratings, or extreme environmental protection**.

- You anticipate **future expansion** and prefer a **more modular system** (e.g., 1769 series).

- **For new projects, evaluate:**

- **Allen-Bradley 1769-OA08** (newer, more compact, better support).

- **Generic 1756-compatible modules** (if Rockwell support is not a concern).

- **Siemens or Mitsubishi alternatives** if moving away from Rockwell.

Ultimately, the **1771-OA-001 remains a dependable choice** for **Rockwell-based systems**, but **future-proofing** should be considered when making a long-term purchase decision.

Details:

USED Allen Bradley 1771-OA-001 Output Module, Shelf A14 Tote 298.

part #: 1771oa001 prices

  • $25.00-$35.00

specifications sensoindustria:

  • brand: Allen-bradley
  • mpn: 1771-oa-001
  • model: Allen Bradley 1771-oa-001
  • part type: Module

returns sensoindustria:

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

shipping sensoindustria:

  • class: Expedited
  • transit: 2-6 Days
  • service: USPS Priority Mail
  • carrier: USPS
  • type: Fixed
  • cost: $0.00

general sensoindustria:

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

offer sensoindustria:

  • options: Ship-to-home
  • started: June 3, 2026
  • sold: 0
  • quantity: 1
  • best offers: True
  • availability: In Stock

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  • # reviews: 2277
  • rating: 100.0%
  • city: Ray, Michigan

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part type: module,
category: business & industrial > plcs hmis > plc peripheral modules > plc input output modules, sku: 22958820962981871,
Allen-bradley 1771-OA-001 Is Similar To:
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2 offers $25.00–$35.00 USD
  • Used. Offer #1 priced at $35.00 + $0.00 shipping estimate = $35.00* total. Shelf A14 Tote 298.FREE SHIPPING
  • Used. Offer #2 priced at $25.00 + $0.00 shipping estimate = $25.00* total. With its reliable performance and durable construction, this AC output module is a key component in industrial automation and motion control systems, making it an essential tool for businesses and industries seeking precise control and efficiency. The Allen Bradley AB 1771-0A 96026874 AC Output Module 1771-OA is a high-quality industrial automation component designed for use with PLCs and HMIs.FREE SHIPPING

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