2025-12-08 BY
IN Company News

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Wei Xiu zhu
WhatsApp:+852 5796 0986
Wechat:13395077993
Zhejiang Yiwu Beixun Automation Technology Co., Ltd
China (Zhejiang) Pilot Free Trade Zone, No. 2 Chunpai Road, Beiyuan Street, Yiwu City, Jinhua City, 7F 7059
website：www.bxplc2.com
Email: 3076784238@qq.com

The ABB DP640 3BHT300057R1 is a high-precision rotational speed meter module designed for critical machinery protection and monitoring applications. As part of ABB’s Advant Controller 110/160 series, this module provides accurate and reliable speed measurement for rotating equipment such as turbines, compressors, motors, and other industrial machinery.

With its advanced signal processing capabilities, the DP640 module can accept inputs from various types of speed sensors and convert them into precise speed measurements. The module features dual-channel input capability, integrated diagnostic functions, and a fail-safe design, making it ideal for safety-critical applications in industries such as power generation, oil and gas, chemical processing, and manufacturing.

Related Series:

ABB 3BHB045647R0008 

ABB RED670 

ABB DP640 3BHT300057R1 

ABB AO650 3BHT3000 

ABB SC610 3BSE001552R1

ABB DP640 3BHT300057R1 Rotational Speed Meter Module

Technical Specifications

Input Specifications

  • Input Type: S600 I/O speed meter input
  • Number of Channels: 2
  • Maximum Frequency: 50 kHz
  • Input Current: ±13 mA
  • Supply Voltage: 24 V DC or 5 V DC

Dual-Channel Redundancy

  • Dual-Channel Input: Supports two independent speed sensor inputs for redundancy
  • Channel Isolation: Completely isolated dual-channel processing for maximum reliability
  • Automatic Voting Logic: Maintains protection while alerting maintenance personnel of channel failures
  • Hot-Swappable Design: Allows module replacement without system shutdown

 

Flexible Integration

  • Multiple Sensor Compatibility: Supports proximity probes (5-30 V DC) and magnetic pickups (50 mV min.)
  • Standard Communication: RS-485 Modbus RTU interface for easy integration with control systems
  • Analog Output: 4-20 mA isolated output for continuous speed monitoring
  • Compact Design: Space-saving form factor for flexible installation in control cabinets

Technical Details

Signal Processing

The ABB DP640 module utilizes advanced digital signal processing (DSP) technology to provide high-precision speed measurements. The module processes input signals from proximity probes or magnetic pickups, converting the frequency information into accurate RPM values.

The module’s adaptive signal conditioning algorithms automatically compensate for variations in signal amplitude, which can occur due to sensor wear, air gap changes, or contamination. This ensures consistent measurement accuracy throughout the sensor’s lifecycle.

The dual-channel design allows for redundant speed measurement, with automatic voting logic that compares the two channels and detects discrepancies that may indicate sensor or wiring problems.

Overspeed Protection

The DP640 module includes built-in overspeed trip logic that provides critical protection for rotating equipment. The module continuously compares the measured speed against user-configurable trip thresholds.

When an overspeed condition is detected, the module activates both solid-state and dry contact outputs to initiate protective actions, such as shutting down the equipment or engaging a braking system. The trip logic includes configurable time delays to prevent false trips due to transient conditions.

The module also provides warning levels that can be used to alert operators before an overspeed condition becomes critical, allowing for proactive intervention.