SMC ASS300-N02 Solenoid Valve Controller Npt SY5140-5WOZ 1/4

( Brand: Smc ), ( Manufacturer Part Number: ASS300-N02 ), ( Part Type: Valve Solenoid Controller ), ( Valve Operation: Solenoid )

Review SMC Solenoid Valve Speed Controller 1/4 Inch Npt

The **SMC AS300-N02 SY5140-5WOZ Solenoid Valve Controller** is a high-performance, versatile industrial-grade device designed to provide precise and reliable control over pneumatic solenoid valves in automated systems. Engineered with SMC s signature precision and durability, this controller is specifically tailored for use with **1/4" NPT (National Pipe Thread) solenoid valves**, making it an ideal solution for applications requiring compact yet robust control mechanisms. The **SY5140-5WOZ** designation indicates a **5-way, 2-position, normally open (NO) valve configuration**, meaning it defaults to an open state when de-energized, ensuring safe default operation in critical applications. This controller operates on a **24V DC power supply**, delivering consistent and efficient performance across a wide range of industrial environments, from manufacturing and packaging lines to material handling and automation systems.

Featuring a **modular and user-friendly design**, the AS300-N02 is equipped with a **digital interface** that allows for easy integration with PLCs (Programmable Logic Controllers), HMIs (Human-Machine Interfaces), or standalone control systems. Its **relay-based output** provides robust switching capability, ensuring reliable actuation of solenoid valves even in demanding conditions with high inrush currents. The controller s **compact and rugged housing** is built to withstand harsh industrial environments, offering protection against dust, moisture, and temperature fluctuations, typically rated for operation within a range of **0 C to 60 C (32 F to 140 F)**. Additionally, its **low power consumption** and **long operational lifespan** contribute to cost-effective, energy-efficient automation solutions.

One of the standout features of the AS300-N02 is its **flexibility in control modes**, allowing users to configure it for **momentary, latching, or timed operation** depending on application requirements. This adaptability makes it suitable for a variety of tasks, including sequential valve actuation, pressure regulation, or even simple on/off control in pneumatic systems. The controller also supports **diagnostic functions**, such as **overload protection and short-circuit detection**, which enhance system reliability by preventing damage to both the valve and the controller itself. When paired with SMC s **SY5140 series solenoid valves**, this controller delivers seamless performance, ensuring smooth and silent operation while maintaining high efficiency.

For engineers and technicians seeking a **plug-and-play solution**, the AS300-N02 simplifies integration into existing pneumatic systems with its **standardized mounting options** and **clear labeling** for easy wiring and setup. Whether deployed in a **small-scale automation project** or as part of a larger, complex industrial setup, this solenoid valve controller exemplifies SMC s commitment to **innovation, reliability, and ease of use**. With its combination of **precision engineering, robust construction, and adaptable control features**, the AS300-N02 SY5140-5WOZ stands as a dependable choice for professionals demanding high-performance pneumatic control in their applications.

### **Pros and Cons of buying a SMC ASS300-N02 (SY5140-5WOZ) Solenoid Valve Controller (1/4 NPT)**

1. **Compatibility with SMC Valves** This controller is specifically designed for SMC solenoid valves, ensuring seamless integration with the valve s control system. It supports the SY5140 series, which is widely used in pneumatic applications.

2. **Digital Control Interface** The controller features a digital output (5WOZ) that allows for precise control of the solenoid valve, enabling on/off operation with minimal latency. This is useful for automated systems where timing and responsiveness are critical.

3. **Compact and Modular Design** The ASS300 series is known for its compact size, making it suitable for installations where space is limited. It can be easily mounted on control panels or integrated into existing systems.

4. **Reliable Performance** SMC is a well-established brand in industrial automation, known for producing durable and high-quality control components. The ASS300 series is designed for long-term use in industrial environments.

5. **Easy Installation** The 1/4 NPT connection ensures a secure and leak-proof fit with compatible SMC valves. The controller is plug-and-play for many applications, reducing setup time.

6. **Support for Multiple Voltages** The SY5140 series valves typically operate on standard voltages (e.g., 24V DC), which are common in industrial control systems, making power supply compatibility straightforward.

7. **Compatibility with PLCs and Automation Systems** The controller can be interfaced with programmable logic controllers (PLCs) or other automation systems, allowing for advanced control logic and integration into larger setups.

8. **Low Power Consumption** Solenoid valves and their controllers are generally energy-efficient, reducing operational costs over time.

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1. **Limited to SMC Valves** This controller is not universal; it is specifically designed for SMC solenoid valves. If you need compatibility with other brands (e.g., Festo, ASCO), you would require a different controller.

2. **Basic Functionality** The ASS300-N02 is primarily an on/off controller without advanced features like proportional control, pulse-width modulation (PWM), or feedback sensors. If you need precise flow regulation or diagnostic capabilities, you may need a more advanced model.

3. **No Built-in Diagnostics** Unlike some higher-end controllers, the ASS300 does not include built-in diagnostic tools for monitoring valve health or detecting faults. Troubleshooting may require external monitoring equipment.

4. **Dependence on External Power Supply** The controller requires a stable power source (e.g., 24V DC). Power fluctuations or failures could disrupt valve operation, potentially requiring additional safeguards like surge protectors or backup power.

5. **Potential for Wear Over Time** Solenoid valves and their controllers are subject to wear, especially in harsh environments (e.g., high humidity, dust, or temperature fluctuations). Regular maintenance may be necessary to ensure longevity.

6. **Limited Customization** The controller s functionality is fixed to basic on/off control. If you require custom programming or additional features (e.g., timing delays, sequencing), you may need to pair it with a PLC or external logic controller.

7. **Cost Considerations** While the ASS300 is reasonably priced for its functionality, purchasing additional accessories (e.g., mounting brackets, wiring kits, or protective enclosures) could increase the total cost.

8. **Learning Curve for Non-Experts** Setting up and configuring the controller may require familiarity with pneumatic systems or basic electrical knowledge. Users without technical expertise may need assistance from a specialist.

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The **SMC ASS300-N02 (SY5140-5WOZ) solenoid valve controller** is a solid choice for applications requiring **simple, reliable on/off control of SMC solenoid valves**. It excels in **compatibility, ease of installation, and durability**, making it ideal for industrial, automation, or pneumatic systems where basic valve actuation is sufficient. However, it is **not suitable for advanced applications** that require proportional control, diagnostics, or integration with non-SMC valves. Users should weigh the need for additional features (e.g., PLC compatibility, feedback sensors) against the controller s limitations before purchasing.

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- You are working exclusively with **SMC SY5140 series valves**.

- Your application requires **simple on/off control** without advanced features.

- You need a **compact, reliable, and cost-effective** solution for basic valve actuation.

- You are comfortable with **basic wiring and setup** or have access to technical support.

- You need **proportional control, flow regulation, or diagnostic capabilities** (e.g., SMC s ASS300 series with additional modules or a PLC).

- You require **compatibility with non-SMC valves** (e.g., Festo, ASCO).

- Your system demands **advanced sequencing, timing, or feedback** (e.g., position sensors).

- You operate in a **highly demanding environment** (e.g., extreme temperatures, corrosive conditions) where a more robust controller may be needed.

For most **basic pneumatic control applications**, the ASS300-N02 is a **practical and efficient choice**. However, if your project involves **complex automation or requires integration with other systems**, investing in a more versatile controller or PLC may be worthwhile. Always verify compatibility with your specific valve model and system requirements before purchasing.

Details:

Need to combine orders from different listings. 1lb 3.2oz ck 2/26/2026 qty Some exceptions may apply. SMC Solenoid Valve W/ Speed Controller SY5140-5WOZ.

If you feel like the combined shipping price is not accurate. USED, but in good working condition. NEW, old inventory. Removed from closed plant.

part #: ass300n02 prices

• $35.00-$117.00

specifications valvesplumbing:

• brand: Smc
• mpn: Ass300-n02
• part type: Valve Solenoid Controller
• valve operation: Solenoid

shipping valvesplumbing:

• type: Calculated
• cost: $19.48
• class: Standard
• carrier: FedEx
• transit: 4-7 Days
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general valvesplumbing:

• condition: Used
• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Other Valves Manifolds

offer valvesplumbing:

• sold: 0
• started: February 26, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 1

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• # reviews: 104080
• city: Clover, South Carolina
• rating: 99.9%

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