Product Description

The Yokogawa UT320-30 is a highly accurate 1/8 DIN digital indicating controller, part of the renowned "GREEN Series." Engineered for versatile industrial automation, it features universal input and output capabilities, allowing users to configure the device for thermocouples, RTDs, or DC voltage inputs directly from the front panel.

Equipped with Yokogawa's proprietary "SUPER" overshoot suppression and "SUPER2" hunting suppression functions, the UT320-30 ensures exceptionally stable PID control even in processes with significant lag or frequent disturbances. Its compact design includes a large, easy-to-read digital display and a dedicated Auto/Man switching key for immediate manual intervention. With integrated retransmission and loop power supply features, this controller is an ideal solution for precise temperature and pressure management in chemical, pharmaceutical, and food processing industries.

Technical Specifications

• Manufacturer: Yokogawa Electric Corporation

• Model Number: UT320-30

• Product Type: Digital Indicating Controller (GREEN Series)

• Mounting: 1/8 DIN (Vertical) Panel Mount

• Control Cycle Time: 250 ms

• Universal Input: * Thermocouple (K, J, R, S, B, E, N, T, etc.)

• RTD (Pt100, JPt100)

• DC Voltage (0-10 mV, 0-100 mV, 1-5 V, etc.)

• Control Output Types: (Selectable)

• 4–20 mA Current Output

• Voltage Pulse Output (for SSR drive)

• Relay Contact Output

• Retransmission Output: 1 channel, 4–20 mA DC (Standard)

• Loop Power Supply: * Standard: 15 V DC (Max 21 mA)

• Optional: 24 V DC (Max 30 mA)

• Contact Inputs: 2 points (for SP switching, Run/Stop, or Auto/Man)

• Communication: Optional RS-485 (Modbus/PC-Link compatible)

• Power Supply: 100–240 V AC (+10%/-15%), 50/60 Hz

• Operating Temperature: -10°C to +50°C

• Protection: IP65 (Front panel when using optional gasket)

• Dimensions: 48 mm (W) × 96 mm (H) × 100 mm (D)

• Weight: 500g (Shipping weight)

• Origin: Japan

Application Scenarios

The UT320-30 is a staple in high-precision thermal and process regulation, such as:

• Heat Treatment Furnaces: Managing complex PID ramps with overshoot suppression.

• Extrusion Lines: Maintaining stable temperature zones for plastic and rubber manufacturing.

• Environmental Chambers: Precision control of humidity and temperature via universal sensor inputs.

• System Integration: Sending process values to a SCADA or PLC via the 4-20mA retransmission output.