1. Product Overview

The ABB DP840 3BSE028926R1 is a versatile pulse counter module designed for accurate frequency and pulse counting applications. The module consists of 8 independent channels, each capable of pulse counting or frequency (speed) measurement, with a maximum measurement frequency of 20 kHz. In addition to pulse counting, each channel can be read as a digital input signal. Each channel is equipped with a configurable input filter, allowing users to adjust its response characteristics according to the application.

The DP840 module supports both single and redundant configurations, offering interfaces for NAMUR, 12V, and 24V sensor signals. The module features advanced onboard diagnostics, which periodically perform self-checks to ensure system stability and reliability.

This module is typically used in conjunction with module termination units (TU810V1, TU812V1, TU814V1, TU830V1, TU833) and is ideal for industrial automation applications requiring high-precision pulse counting and frequency measurement.

2. Key Features

• 8 Independent Channels: Each channel can be configured independently for pulse counting or frequency measurement.
• Redundancy Support: Can be used in both single and redundant configurations for high system availability.
• Multiple Interface Types: Supports interfaces for NAMUR, 12V, and 24V sensor signals.
• Flexible Channel Configuration: Each channel can be configured for pulse counting or frequency measurement mode, meeting various application requirements.
• Digital Input Capability: The input signals can also be read as digital input signals, increasing the module’s versatility.
• Pulse Counting: Supports pulse counting via a 16-bit counter for high-precision measurement.
• Frequency Measurement: Supports frequency measurement ranging from 0.5 Hz to 20 kHz for accurate speed monitoring.
• Advanced Onboard Diagnostics: The module features self-diagnostics, ensuring reliability in both single and redundant applications.

3. Technical Specifications

3.1 Dimensions and Weight

3.2 General Information

3.3 Power Consumption and Current

3.4 Electrical Isolation and Electrical Characteristics

4. Industry Applications

The ABB DP840 3BSE028926R1 pulse counter module is widely used in industrial automation, machine control, process monitoring, and other fields, particularly in the following scenarios:

• Mechanical Equipment Speed Monitoring: Through the frequency measurement function, it can be used for monitoring and controlling the speed of various mechanical devices.
• Production Line Counting: Pulse counting functionality is ideal for material or product counting on production lines.
• Automation Control Systems: As a digital input module, it can be connected to PLCs and other automation control systems for real-time data acquisition.
• Redundant Control Systems: In systems requiring high reliability and backup, the DP840 supports redundant configurations to ensure stable operation even in case of failures.

Process Control and Monitoring: Suitable for sensor signal acquisition and frequency counting in industrial processes, especially in fields that require high precision.