ABB REL511-C2 1MRK004492-BB Analog Input Module

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1. Product Overview

The ABB REL511-C2 1MRK004492-BB Analog Input Module is an input unit used in ABB DCS/PLC systems to receive and process analog signals. It can accept signals from sensors measuring temperature, pressure, current, voltage, etc., and convert them into digital signals for the control system, enabling real-time process monitoring and control. The REL511-C2 supports multiple input channels, fast response, and high accuracy, making it a key component in industrial automation and process control systems.

2. Technical Specifications

• Model: REL511-C2 / 1MRK004492-BB

• Product Type: Analog Input Module

• Number of Input Channels: 8 channels (example, configurable per system)

• Supported Signal Types: 0–10 V, 4–20 mA, Pt100 / Pt1000 RTD

• Resolution: 16-bit

• Sampling Rate: 10 ms per channel (typical)

• Isolation Voltage: ≥ 500 V AC/DC

• Operating Voltage: 24 V DC

• Power Consumption: ≤ 2 W

• Communication Interface: DCS/PLC backplane interface

• Mounting: Insert into control system backplane

• Operating Temperature: 0 ℃ to +60 ℃

• Degree of Protection: IP20

• Standards: IEC 61131-2 / CE

3. Advantages and Features

1. High-Precision Data Acquisition
   16-bit resolution enables accurate analog-to-digital conversion.

2. Multiple Channel Inputs
   Supports multiple sensor connections per module, reducing system footprint.

3. Fast Response
   Short sampling time ensures real-time monitoring of process variables.

4. Safe Isolation Design
   Input channels are electrically isolated from the backplane to ensure system safety.

5. Strong Compatibility
   Direct integration into ABB DCS/PLC systems, facilitating system expansion and maintenance.

4. Applications

• Industrial process automation and control

• Power system monitoring

• Process industries such as petrochemical, metallurgy, and pharmaceuticals

• HVAC and energy management systems

• Machinery condition monitoring and data acquisition

5. Installation and Usage Notes

1. Ensure the module model is compatible with the control system before installation.

2. Input signal type and range must comply with module specifications to avoid damage.

3. Perform wiring with power disconnected for safety.

4. Regularly inspect connections and module status to ensure reliable data acquisition.

5. Avoid direct use in high humidity, dusty, or corrosive environments; use protective enclosures if necessary.