ALLEN-BRADLEY 1734D-IB8XOB8ES Ab

( Brand: Allen-bradley ), ( Manufacturer Part Number: 1734D-IB8XOB8ES ), ( Country Of Origin: United States )

Review ALLEN BRADLEY Ab As Is

The **Allen-Bradley 1734D-I8XOB8ES** is a high-performance, modular **CompactLogix 1734D series** input/output (I/O) module designed to integrate seamlessly into Allen-Bradley s scalable control systems, offering robust and flexible automation solutions for industrial applications. Part of the **1734D family**, this **8-channel discrete input module** features a **24V DC input type**, making it ideal for interfacing with a wide range of sensors, switches, and binary signaling devices in manufacturing, process control, and machine automation environments. The module operates within a **wide voltage range of 18 32V DC**, ensuring compatibility with diverse power supply configurations while maintaining reliable signal processing. With **isolated inputs**, the 1734D-I8XOB8ES provides enhanced protection against electrical noise and voltage spikes, reducing the risk of system downtime and improving overall operational stability.

Engineered for **high-speed data acquisition**, this module delivers **100 s scan time per input**, enabling precise and responsive control in applications requiring rapid decision-making, such as motion control, packaging systems, or discrete manufacturing processes. The **8-channel design** allows for efficient expansion of I/O capacity, accommodating multiple discrete signals within a compact footprint, which is particularly advantageous in space-constrained control panels. Each input channel is **optically isolated**, ensuring galvanic isolation between the field devices and the control system, thereby enhancing safety and reducing the potential for ground loops or interference. The module s **LED status indicators** provide real-time feedback on input states, simplifying troubleshooting and maintenance by visually confirming signal integrity.

Compatibility with **Rockwell Automation s ControlLogix and CompactLogix platforms** ensures seamless integration with existing or new control architectures, leveraging the **EtherNet/IP** communication protocol for high-speed, deterministic data exchange. The 1734D-I8XOB8ES adheres to **Industrial Ethernet standards**, enabling efficient networking with other PLCs, HMIs, and SCADA systems, while its **compact 1734D series chassis** allows for easy installation in standard 1734D or 1734 series racks. Built to withstand harsh industrial environments, the module is **IP67-rated**, offering protection against dust, water, and other contaminants, making it suitable for applications in cleanrooms, outdoor installations, or environments with exposure to moisture. Additionally, its **wide operating temperature range of -20 C to 60 C** ensures reliable performance across varying climatic conditions, further enhancing its versatility in diverse industrial settings.

Designed with **Allen-Bradley s commitment to reliability and performance**, the 1734D-I8XOB8ES incorporates **high-quality components and robust engineering** to deliver long-term durability and minimal maintenance requirements. The module supports **firmware updates** and **device-level ring (DLR) support**, allowing for advanced diagnostics and predictive maintenance capabilities, which help optimize system uptime and reduce operational costs. Whether deployed in **automotive assembly lines, food and beverage processing, or material handling systems**, this input module provides a dependable foundation for automated control solutions, combining **speed, isolation, and scalability** to meet the demands of modern industrial automation. Its **backward and forward compatibility** with other 1734 series modules ensures future-proofing, making it a cost-effective choice for both new installations and retrofitting existing control systems.

### **Pros and Cons of buying a Allen-Bradley 1734D-IB8XOB8ES (CompactLogix 1734-D Series, 8-Point Isolated Analog Input Module)**

#### **Pros**

1. **Compatibility with CompactLogix Controllers**

The 1734D-IB8XOB8ES is designed specifically for use with Allen-Bradley CompactLogix (1768-Lxx) and other compatible PLCs, ensuring seamless integration into existing control systems. This reduces the need for additional hardware or software modifications.

2. **Isolated Analog Inputs**

The module provides **8 isolated analog input channels**, each capable of reading signals from 0 10 VDC, 0 20 mA, or 4 20 mA. Isolation prevents ground loops and noise interference, improving signal reliability in industrial environments.

3. **High Accuracy and Precision**

The module offers **16-bit resolution** (0.002% of reading) and **0.1% full-scale accuracy**, making it suitable for applications requiring precise measurements, such as process control, motor speed monitoring, or temperature sensing.

4. **Wide Input Range Support**

The ability to handle multiple input types (voltage and current) makes it versatile for different sensor applications, including RTDs, thermocouples (with optional accessories), and standard analog signals.

5. **Easy Installation and Configuration**

The module follows standard Allen-Bradley mounting and wiring standards, simplifying installation in control panels. Configuration is straightforward in **Studio 5000** or **RSLogix 5000**, with minimal programming effort.

6. **Rugged Industrial Design**

Built to withstand harsh environments, the module is designed for **NEMA 4X/IP65** protection, making it durable for factory floors, outdoor installations, and other demanding settings.

7. **Backward and Forward Compatibility**

While primarily for newer CompactLogix platforms, it is also compatible with some older **ControlLogix** systems, extending its useful life in legacy setups.

8. **Support for Advanced Features**

The module supports **trend logging, alarming, and integration with other Allen-Bradley devices** (e.g., HMI, SCADA systems) for enhanced monitoring and control.

---

#### **Cons**

1. **Limited to CompactLogix and Some ControlLogix Systems**

Unlike universal analog input modules, this is **vendor-locked** to Allen-Bradley s ecosystem. If migrating to a non-Rockwell system (e.g., Siemens, Schneider), replacement may be necessary.

2. **Higher Cost Compared to Generic Alternatives**

Allen-Bradley modules are **premium-priced** compared to third-party or generic analog input cards. For budget-conscious projects, alternatives like **Siemens, Beckhoff, or generic industrial modules** may offer similar performance at a lower cost.

3. **Requires Proper Grounding and Wiring**

While isolation helps, improper grounding or wiring can still introduce noise. Additional filtering or shielding may be needed in noisy environments, adding complexity.

4. **Deprecated Status (Potential Future Issues)**

Allen-Bradley has shifted focus to newer platforms (e.g., **Studio 5000 Logix Designer, CompactLogix 5580**). While this module is still supported, **long-term availability** may decline, and future firmware updates could be limited.

5. **No Built-in Signal Conditioning for Some Sensors**

The module does not include **RTD or thermocouple signal conditioning** by default. Additional accessories (e.g., **1734-IB8XOB8ES with 1734-IB8XOB8ES-TC**) are required for temperature sensors, increasing cost.

6. **Software Dependency on Rockwell Platforms**

Configuration and programming require **Studio 5000 or RSLogix 5000**, which may not be ideal for users working with other PLC brands or open-source alternatives.

7. **Potential Latency in High-Speed Applications**

While suitable for most industrial applications, **high-speed data acquisition** (e.g., motion control) may require additional considerations or higher-end modules.

---

### **Conclusion**

The **Allen-Bradley 1734D-IB8XOB8ES** is a **high-quality, reliable analog input module** ideal for **Allen-Bradley CompactLogix and ControlLogix systems** where precision, isolation, and ease of integration are critical. It excels in **process control, motor monitoring, and industrial automation** where signal integrity and accuracy are non-negotiable.

However, its **vendor lock-in, higher cost, and potential long-term availability concerns** make it less ideal for **open-system or cost-sensitive projects**. If working within an **exclusive Rockwell ecosystem** and requiring **isolated, high-precision analog inputs**, this module is a strong choice. For other applications, **third-party or generic alternatives** may offer better value.

---

### **Recommendation**

- You are **exclusively using Allen-Bradley CompactLogix/ControlLogix** and need **isolated, high-accuracy analog inputs**.

- Your application requires **NEMA 4X/IP65 protection** in a **harsh industrial environment**.

- You prioritize **long-term support and compatibility** with Rockwell s software ecosystem.

- You are **open to non-Rockwell PLCs** (e.g., Siemens, Beckhoff, Schneider) and want **lower-cost, more flexible options**.

- Your budget is **limited**, and you can tolerate slightly lower precision or lack of isolation.

- You need **RTD/thermocouple support without additional accessories**, as some third-party modules include built-in conditioning.

- You anticipate **future scalability** beyond Rockwell s platform.

For most **Rockwell-centric industrial automation projects**, this module remains a **solid, well-supported choice**. However, always verify **current availability** from authorized distributors (e.g., Grainger, Mouser, or Rockwell s website) before purchasing, as obsolescence risks exist.

Details:

part #: 1734dib8xob8es prices

• $252.89-$279.99

specifications sensoindustria:

• brand: Allen-bradley
• mpn: 1734d-ib8xob8es
• country of origin: United States

general sensoindustria:

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

seller sensoindustria:

• city: Pharr, Texas
• rating: 100.0%
• # reviews: 2706

offer sensoindustria:

• started: February 24, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock

returns sensoindustria:

• policy: No Returns

shipping sensoindustria:

• service: USPS Ground Advantage, UPS Ground, UPS 2nd Day Air, UPS Next Day Air
• carrier: USPS, UPS
• class: Standard, Expedited, One-day
• type: Fixed
• transit: 3-7 Days
• cost: $0.00

payments sensoindustria:

• wallet: Google-pay
• other
• credit card: Diners-club

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