Yokogawa UT55A-040-11-00/LP Digital Indicating Controller

Overview

The Yokogawa UT55A-040-11-00/LP is a high-performance 1/4 DIN digital indicating controller from the UTAdvanced™ series. It delivers precise temperature and process control with a universal input and relay output. This model includes RS-485 communication using Modbus/RTU protocol, making it ideal for integration into modern industrial automation systems. It also supports ladder sequence programming for flexible logic control and features a compact, rugged design suitable for harsh environments.

Technical Specifications

Model Breakdown

• Model: UT55A-040-11-00/LP

• Input Type (040): Universal input (thermocouple, RTD, DC voltage/current)

• Output 1 (11): Relay output

• Output 2 (00): None

• Option Code (/LP): RS-485 communication (Modbus/RTU)

Display & Operation

• Display: 14-segment color LCD

• Navigation: Scrollable parameters, intuitive keypad

• Languages: Multilingual user interface

Inputs & Outputs

• Universal Input Accuracy: ±0.1%

• Relay Output: 250 V AC, 3 A (resistive load)

• Sensor Power Supply: 15 V DC standard (24 V DC optional)

• Remote Analog Input: 1 channel

• Digital Input: 1 additional configurable input

Communication

• Interface: RS-485 serial port

• Protocols: Modbus/RTU, peer-to-peer, coordinated control

• Baud Rate: Up to 38.4 kbps

Power & Mounting

• Power Supply: 100–240 V AC, 50/60 Hz

• Power Consumption: 18 VA

• Panel Depth: 65 mm (compact form factor)

• Mounting Style: Panel mount (1/4 DIN)

Environmental & Compliance

• Operating Temperature: 0°C to +50°C

• Storage Temperature: –25°C to +70°C

• Front Panel Protection: IP66 / NEMA4 rated