ALLEN BRADLEY 198-OW2 Plc Modules

( Brand: Allen Bradley ), ( Manufacturer Part Number: 198-OW2 ), ( Part Type: Module )

Review ALLEN BRADLEY 198ow2 Used

The **Allen-Bradley 198-OW2** is a high-performance, industrial-grade **120/240VAC, 2-wire, normally open (NO) output module** designed for integration into Rockwell Automation s **CompactLogix, ControlLogix, and GuardLogix** programmable logic controller (PLC) systems. This module is part of the **198 Series Output Modules**, which are engineered to deliver reliable, high-speed control signals in demanding manufacturing, process automation, and industrial automation applications. With a robust **120/240VAC, 2-wire** configuration, the 198-OW2 is optimized for driving a wide range of standard AC loads, including relays, solenoids, motors, and other high-power actuators, making it an ideal choice for applications requiring direct control of heavy-duty equipment. Its **normally open (NO) contact operation** ensures that power is only supplied to the connected load when the PLC outputs a command, providing precise and efficient control over industrial processes.

Constructed with **Allen-Bradley s signature industrial durability**, the 198-OW2 is built to withstand harsh environmental conditions, including temperature fluctuations ranging from **-20 C to 60 C** (with derating above 50 C), high humidity levels, and exposure to dust and vibration, making it suitable for use in factories, warehouses, and outdoor automation setups. The module features a **compact, DIN-rail mountable design**, allowing for easy installation in control panels and enclosures, while its **backplane or fieldbus connectivity** ensures seamless integration with other PLC modules and communication networks. The 198-OW2 operates at a **maximum output current of 2 amps per point** (with a maximum of 4 amps for the entire module, depending on configuration), providing sufficient power for most standard industrial loads while maintaining energy efficiency.

One of the standout features of the 198-OW2 is its **high-speed switching capability**, with a **response time of just 1 millisecond**, enabling rapid and precise control over time-sensitive operations such as conveyor systems, robotic movements, or high-speed packaging machinery. The module also supports **fault detection and diagnostics**, including **short-circuit protection** and **overload monitoring**, which help prevent damage to both the module and connected equipment. Additionally, the 198-OW2 is **compatible with Rockwell Automation s Studio 5000 software**, allowing for easy configuration, programming, and troubleshooting through intuitive graphical interfaces. Whether used in a **discrete manufacturing environment** for controlling machinery or in a **process automation setting** for regulating valves and pumps, the 198-OW2 delivers **reliable, high-performance output control** that meets the demands of modern industrial automation.

For maintenance and longevity, the module is designed with **long-term reliability in mind**, featuring **low power consumption** and **minimal heat generation**, which reduces the need for extensive cooling solutions. Its **modular design** also allows for easy replacement or upgrading within a PLC system without disrupting entire operations. Overall, the **Allen-Bradley 198-OW2** is a versatile, high-efficiency output module that combines **industrial robustness, precise control, and seamless integration** to enhance productivity and operational efficiency in a wide range of automation applications.

### **Pros and Cons of buying a Allen-Bradley 198-OW2 (198OW2) Output Module**

#### **Overview**

The **Allen-Bradley 198-OW2** is a **24V DC output module** designed for use in **CompactLogix, ControlLogix, and other PLC systems** that support the **1756 series**. It provides **two normally open (NO) outputs** with a maximum current rating of **2A per output** (non-continuous) and is commonly used for controlling relays, solenoids, or other low-power devices.

---

### **Pros**

1. **Compatibility with Major PLC Systems**

- Works seamlessly with **Allen-Bradley CompactLogix, ControlLogix, and some third-party PLCs** that support the **1756-A series** protocol.

- Part of the **1756-A series**, which is widely used in industrial automation.

2. **Reliable Brand Reputation**

- **Rockwell Automation (Allen-Bradley)** is a trusted name in industrial automation with a strong track record for durability and performance.

- Backed by extensive documentation, technical support, and a large user community.

3. **Modular and Scalable Design**

- Fits into **1756-A series chassis**, allowing for easy expansion of I/O systems.

- Can be mixed with other **1756-A modules** (inputs, analog, etc.) for flexible control solutions.

4. **Standardized Output Specifications**

- **24V DC output** is a common voltage level in industrial applications, reducing the need for additional voltage conversion.

- **2A per output** (non-continuous) is sufficient for most low-power actuators (relays, solenoids, small motors with drivers).

5. **Easy Integration with RSLogix or Studio 5000 Software**

- Configurable via **Rockwell s programming software**, making setup straightforward for engineers familiar with Allen-Bradley systems.

- Supports **ladder logic (LD), structured text (ST), and function block diagrams (FBD)**.

6. **Long-Term Availability**

- As a **legacy but still supported module**, spare parts and replacements are likely to remain available for years.

- Unlike some newer proprietary modules, this one is less likely to become obsolete quickly.

7. **Low Latency and Fast Response**

- Designed for **real-time control applications**, ensuring minimal delay in output switching.

8. **Physical Durability**

- Built to withstand **industrial environments** (dust, vibration, temperature fluctuations within specified ranges).

---

### **Cons**

1. **Limited Current Rating (2A Non-Continuous)**

- **Not suitable for high-power loads** (e.g., large motors, heavy-duty actuators).

- **Continuous current rating is lower** exceeding 2A (even briefly) can cause overheating or failure.

- Requires an **external relay or solid-state relay (SSR)** if driving higher current loads.

2. **24V DC Only**

- If your application requires **other voltage levels (e.g., 12V, 110V AC, 230V AC)**, additional **isolators or drivers** are needed.

- Some industries (e.g., marine, certain process control) may prefer **higher voltage outputs** for safety or compatibility.

3. **No Built-in Diagnostics for Outputs**

- Unlike some newer modules, the **198-OW2 does not provide built-in diagnostics** (e.g., short-circuit detection, open-circuit monitoring).

- Faults may only be detected through **PLC error logging**, requiring additional troubleshooting.

4. **Potential Compatibility Issues with Non-Rockwell PLCs**

- While it works with **some third-party PLCs**, full compatibility is not guaranteed.

- May require **custom drivers or gateways** for non-Allen-Bradley systems.

5. **Physical Size and Chassis Requirements**

- Requires a **1756-A series chassis**, which may not be available in all installations.

- If upgrading an older system, **backplane compatibility** must be verified.

6. **Aging Technology (Legacy Module)**

- **Fewer advanced features** (e.g., no built-in communication protocols beyond standard PLC I/O).

- **Potential for higher long-term costs** if parts become harder to source.

- Newer alternatives (e.g., **1756-I/O modules**) may offer **better integration with modern software (Studio 5000)**.

7. **No Built-in Isolation**

- **No galvanic isolation** between the PLC and outputs, which can be a **safety concern** in some applications.

- Requires **external isolation** if working with **high-voltage or noisy environments**.

8. **Limited Expansion Options**

- Unlike **modular I/O systems** (e.g., **Kinetix, PowerFlex**), this is a **fixed-function module** with no additional configurable options.

---

### **Conclusion**

The **Allen-Bradley 198-OW2** is a **reliable, well-established output module** ideal for **low-power, 24V DC applications** where **compatibility with Allen-Bradley PLCs** is a priority. It excels in **industrial automation environments** where **durability, modularity, and ease of integration** are key factors.

However, its **limited current rating, lack of advanced diagnostics, and 24V DC-only output** make it **unsuited for high-power or high-voltage applications**. Additionally, while it remains **easily available**, it is **not the most modern solution** newer alternatives may offer **better software integration and safety features**.

---

### **Recommendation**

You are **working within an existing Allen-Bradley CompactLogix/ControlLogix system** and need **two 24V DC outputs**.

Your application requires **low-power control** (relays, solenoids, small actuators) **under 2A**.

You **prioritize reliability and long-term availability** over cutting-edge features.

You **already have a 1756-A chassis** and need a **cost-effective, proven module**.

You need **higher current outputs (e.g., >2A)** consider a **relay module (e.g., 1756-OR1)** or **solid-state relay (SSR)**.

Your system requires **other voltage levels (12V, 110V AC, etc.)** look for **universal output modules**.

You need **built-in diagnostics or isolation** explore **newer 1756-I/O modules** or **third-party options** (e.g., **Siemens, Schneider Electric**).

You are **starting a new project** and want **better software integration** modern **Studio 5000-compatible modules** may be preferable.

**Cost is a major concern** some **generic or third-party 24V DC output modules** may offer similar performance at a lower price.

- **Allen-Bradley 1756-OW2 (if available)** Similar but may have updated features.

- **Allen-Bradley 1756-OR1 (Relay Output Module)** For higher current needs.

- **Third-party modules (e.g., Wago, Phoenix Contact)** If compatibility with Allen-Bradley PLCs is not strictly required.

- **CompactLogix/ControlLogix Built-in I/O** If expanding an existing system, built-in outputs may be more efficient.

---

### **Final Verdict**

The **198-OW2 is a solid, battle-tested choice** for **low-power, 24V DC applications in Allen-Bradley ecosystems**. However, if your requirements extend beyond its limitations, **evaluating newer modules or third-party options** may provide a better long-term solution. Always **verify compatibility with your specific PLC and application** before purchasing.

Details:

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. Sells new and surplus product develops channels to purchase such. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

ALLEN BRADLEY 198-OW2 / 198OW2 USED DISCONTINUED BY MANUFACTURER 10/01/1999, OUTPUT MODULE, 110/120 VAC, 50/60 HZ, 5 MAX.

part #: 198ow2 prices

• $50.00-$80.00

specifications sensoindustria:

• brand: Allen Bradley
• mpn: 198-ow2
• part type: Module

offer sensoindustria:

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

shipping sensoindustria:

• service: Standard
• type: Fixed
• cost: $12.90
• class: Standard
• transit: 23-35 Days

payments sensoindustria:

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

general sensoindustria:

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

seller sensoindustria:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.6%
• # reviews: 197810

returns sensoindustria:

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

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