ABB AX645 Analog Mixed Input/Output Module

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ABB AX645 Analog Mixed Input/Output Module

1. Product Description & Technical Specifications

Model: AX645
Type: Analog Mixed I/O Module
Function:
Provides both analog input and output capabilities for ABB industrial automation systems, enabling sensor data acquisition and actuator control for closed-loop process automation.

Technical Specifications:

• Input Channels: 4–8 analog inputs (current/voltage selectable)

• Output Channels: 2–4 analog outputs (current/voltage selectable)

• Input Range: 0–10 V, 0–20 mA, or 4–20 mA

• Output Range: 0–10 V, 0–20 mA, or 4–20 mA

• Resolution: 16-bit

• Accuracy: ±0.1%

• Isolation: Full opto-isolation between input/output and system bus

• Response Time: <10 ms

• Communication Interface: ABB proprietary bus

• Power Supply: Via system backplane

• Operating Temperature: 0°C to +60°C

• Storage Temperature: -40°C to +85°C

• Humidity Range: 5%–95% non-condensing

• Installation: Rack-mounted plug-in module

• Compatible Systems: ABB Advant, Master, Procontrol series

2. Advantages & Key Features

1. High-precision analog handling
   16-bit resolution ensures accurate data for industrial control applications.

2. Integrated I/O functionality
   Combines analog inputs and outputs in a single module, saving space and cost.

3. Strong noise immunity
   Full opto-isolation ensures reliable signal in high-noise environments.

4. Fast response
   <10 ms response time suitable for closed-loop control and high-speed acquisition.

5. Modular design
   Plug-in structure allows quick replacement and maintenance, minimizing downtime.

6. High system compatibility
   Seamlessly integrates with existing ABB control systems, supporting upgrades and retrofits.

3. Typical Applications

• Factory process automation

• DCS/PLC analog signal acquisition and control

• Power, chemical, oil & gas, and metallurgy process monitoring

• Water treatment automation systems

• Automated warehouses and assembly lines

• Automated testing and measurement systems

• Sensor data acquisition and closed-loop control

4. Precautions

1. Always power off before installation or removal.

2. Verify input/output voltage and current match module specifications.

3. Install in a dry, ventilated control cabinet; avoid high temperature and humidity.

4. Ensure proper shielding and grounding of signal lines.

5. Regularly inspect terminals and bus connections for proper contact.

6. Follow ABB system power-up sequence and parameter initialization when replacing the module.

The structure and details of the product：

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