ABB STT04 Smart Transmitter Terminal

Product Model

ABB STT04 Smart Transmitter Terminal

Product Overview

The ABB STT04 is a high-precision smart transmitter terminal used in industrial automation and process control systems for signal acquisition and transmission. It supports multiple analog and digital inputs, converting sensor signals into standard industrial outputs, and provides diagnostic functionality for real-time process monitoring and data management. The STT04 features a modular design suitable for reliable operation in complex industrial environments.

Technical Specifications (Typical)

• Model: STT04

• Type: Smart Transmitter Terminal

• Input Type: Analog (4–20 mA, 0–10 V) or digital (pulse/switch signals)

• Output Type: Analog (4–20 mA, 0–10 V)

• Accuracy: ±0.1% FS

• Resolution: 16-bit

• Supply Voltage: 24 V DC

• Maximum Power Consumption: 2.5 W

• Response Time: < 50 ms

• Operating Temperature: –20°C to +60°C

• Mounting: DIN rail or panel mount

• Status Indicators: LED for power, signal, and fault

• Communication Interface: HART or ABB internal bus (optional)

• Protection Rating: IP20 / optional IP54

Features and Advantages

1. High-Precision Measurement: Supports multiple industrial sensor inputs for accurate process variable acquisition.

2. Intelligent Functions: Diagnostic and self-test capabilities monitor signal integrity and device status.

3. Fast Response: Low-latency data processing for real-time control and monitoring.

4. Modular Design: Compact structure for easy installation in control cabinets or systems.

5. Multi-Interface Support: Supports analog output and digital communication protocols for easy system integration.

6. High Reliability: Industrial-grade design with strong EMI resistance for harsh environments.

Application Areas

• Industrial automation process control

• Signal acquisition and transmission for PLC and DCS systems

• Energy and power monitoring systems

• Process measurement in chemical, metallurgical, and petrochemical industries

• Water treatment and environmental monitoring systems

• Smart factories and Industrial IoT (IIoT) applications

Precautions

1. Disconnect power before installation to prevent electric shock or device damage.

2. Follow wiring diagrams and terminal labeling strictly to avoid short circuits or signal errors.

3. Maintain a dry and ventilated working environment, avoiding high humidity, temperature, and corrosive gases.

4. Do not exceed rated input/output ranges to prevent accuracy loss or module damage.

5. Periodically check terminal status indicators and wiring to ensure reliable signal transmission.

6. Maintenance and commissioning should be performed by qualified personnel.