Product Description
The PW481 S2 is a high-reliability AC power conversion module designed for Yokogawa CENTUM VP and CS 3000 control systems. It converts 100–120 V AC mains power into regulated DC power to drive both internal processor logic and external field instrumentation.
As an S2 style revision, the PW481 offers enhanced electrical stability, making it the preferred choice for North American and Japanese industrial grids where 100–120 V AC is standard.
Technical Specifications
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Model / Style: PW481 (PW481 S2)
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Input Voltage Range: 100–120 V AC (±10%)
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Frequency Requirement: 50/60 Hz
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Power Rating: 200–230 VA
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Output Distribution:
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System Logic Power: 5.1 V DC
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Transmitter / Transducer Power: 24 V DC
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Redundancy Support: Compatible with dual-redundant power configurations
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Connection Type: M4 screw terminal blocks for secure, high-vibration-resistant wiring
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Environmental Rating: Cabinet-mounted industrial environments
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Cooling: Natural convection airflow
Operational Role and Reliability
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Serves as the critical energy regulator for Field Control Units (FCU)
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Isolates sensitive DCS electronics from raw mains power and filters EMI to protect signal integrity from meters and transducers
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Dual-redundant operation: Two modules share the load; if the primary fails or input is lost, the secondary takes over the full 200 VA load instantly, preventing process interruptions
Technical FAQ
Q: Can the PW481 S2 be replaced while the system is running?
A: Yes. In a redundant setup, the PW481 S2 is hot-swappable, with the redundant module maintaining the system load during replacement.
Q: What is the difference between the PW481 and the PW482?
A: The PW481 is designed for 100–120 V AC systems, while the PW482 is for 220–240 V AC. They are not interchangeable regarding input voltage.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
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| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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