YOKOGAWA UT35A High Performance Digital Indicating Temperature Controller

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The Yokogawa UT35A is a high-performance digital indicating temperature controller engineered to automate and optimize industrial process loops. Part of the UTAdvanced series, it consolidates standard PID control, sequence logic, and extensive network protocols into a single, compact panel instrument.

Key Technical Specifications

Universal Input: Features ±0.1% measurement accuracy. It natively accepts Thermocouples (TC), Resistance Temperature Detectors (RTD), DC millivolts (mV), DC voltage (V), and DC current (mA).
Universal Outputs: Configurable for relay, voltage pulse, or current outputs.
Ultra-Slim Profile: Built with a 65 mm panel depth to maximize space efficiency inside compact control enclosures.
Advanced Control Algorithms: Utilizes PID, ON/OFF, heating/cooling, and position-proportional algorithms. It features proprietary SUPER/SUPER2 fuzzy logic to actively suppress overshoot and hunt behaviors.
Power Supply: Operates on universal 100 to 240 VAC (+10%, -15%) or optional 24 VAC/DC.

Advanced Functionality

Built-In Ladder Logic: Includes standard sequence control supporting up to 300 steps. This allows the controller to replace small standalone PLCs for peripheral interlock logic and safety sequencing.
Visual Interface: Outfitted with an active, high-resolution 14-segment color LCD display. The screen dynamically changes colors based on process status alerts or alarm states.
Industrial Networking: Fully compatible with Modbus/TCP, Modbus/RTU, Ethernet, RS-485, and open fieldbus architectures like PROFIBUS-DP, CC-Link, and DeviceNet.
Environmental Rating: The front panel carries an IP66/NEMA4 dust and drip-proof rating for harsh factory floors.

Product Variants

The UT35A family includes specialized models tailored for distinct factory-automation requirements:

UT35A Standard: General-purpose temperature and process control loop module.
UT35A/RSP: Features a non-isolated Remote Setpoint (RSP) input for external target tracking and cascade loop configurations.
UT35A-L: A dedicated Limit Controller with FM approval, engineered to act as a high/low thermal safety trip featuring built-in runtime timers.