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Product Description
The UT551 is a high-performance 1/4 DIN digital indicating controller from Yokogawa's renowned Green Series. Specifically engineered for precise thermal and process regulation, the UT551 (Model: UT551) utilizes advanced control algorithms to maintain stability in demanding industrial environments. It is distinguished by its vibrant, active color LCD PV display, which provides operators with clear process visibility and immediate status recognition from a distance.
Built for versatility, the UT551 supports a wide array of universal inputs—including thermocouples, RTDs, and DC voltage/current—eliminating the need for multiple hardware variants. Its robust design is ideal for critical applications in chemical processing, vacuum heat treatment, and specialized environmental chambers. The unit features integrated RS-485 communication for seamless SCADA integration and is rated IP66 for protection against dust and high-pressure water jets.
Technical Specifications
| Specification | Description |
|---|---|
| Display Technology | Active color LCD with high-contrast Process Value (PV) readout |
| Input Versatility | Universal Input (Thermocouple, RTD, DC Voltage, DC Current) |
| Control Algorithm | Advanced PID, ON/OFF, Heating/Cooling, and Manual Control |
| Output Options | Relay, Voltage Pulse (for SSR), 4-20 mA Current, or dedicated SSR drive |
| Alarm Channels | Up to 5 user-configurable alarm outputs |
| Communication Interface | RS-485 (Supports Modbus RTU, PC-Link, and Ladder protocols) |
| Power Supply | 100-240 V AC (+10%/-15%) or 24 V DC (Model specific) |
| Panel Dimensions | 96 mm x 96 mm |
| Depth Behind Panel | 100 mm |
| Thermal Operating Range | -10 °C to +50 °C (14 °F to 122 °F) |
| Weight | 1.45 kg |
Advanced Control Features
The UT551 includes "SUPER" overshoot suppression and "SUPER2" hunting suppression functions. These proprietary Yokogawa features significantly reduce the time required for a process to reach setpoint without the risk of thermal damage or oscillation. The controller also supports multiple parameter sets, allowing for recipe-based switching in complex manufacturing cycles.
FAQ
Can the UT551 be configured without a manual?
While it has a user-friendly front panel, it is highly recommended to use the Yokogawa LL50A Parameter Setting Software for rapid commissioning and backup of configuration files.
Is the display readable in low-light conditions?
Yes, the active color LCD is backlit and designed specifically for high visibility in various industrial lighting environments, including dark control rooms.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| 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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