ABB DP840 Incremental Pulse Counter Module

Overview

The ABB DP840 Incremental Pulse Counter Module is an advanced solution for precise pulse counting and frequency measurement. With its 8 independent channels, configurable input filters, and support for multiple transducer signal levels (NAMUR, 12 V, and 24 V), the module offers versatility for industrial automation systems. It also features self-diagnostic capabilities to enhance reliability and safety.

Technical Specifications

• Brand & Model: ABB DP840
• Channel Count: 8
• Power Supply Voltage: 24 V DC (19.2 – 30 V DC)
• Max Input Voltage: 30 V DC
• Filter Options & Frequency Range:
  • 10 μs: 0.5 Hz – 20 kHz
  • 100 μs: 0.5 Hz – 5 kHz
  • 800 μs: 0.5 Hz – 625 Hz
  • 6400 μs: 0.5 Hz – 78 Hz
• Sensor Supply: NAMUR (8.2 V), 12 V, 24 V ranges.
• Max Cable Length: 200 m (Twisted Pair).
• LED Indicators: Px (input state), F (channel fault).
• Modulebus Consumption: 115 mA at 5 V.
• Power Dissipation: 4 W.
• Mounting Compatibility: Single applications (TU810, TU812, TU814, TU818) and redundant setups (TU842, TU843, TU852, etc.).
• Insulation Voltage: Rated at 50 V; Dielectric test voltage at 500 V AC.

FAQ

Q1: What transducer types does the DP840 support?
A1: The module supports NAMUR, 12 V, and 24 V signal levels, offering flexibility for various applications.

Q2: Can the DP840 be used in redundant systems?
A2: Yes, the DP840 is designed for both single and redundant applications.

Q3: What is the maximum frequency the DP840 can measure?
A3: The module can measure up to 20 kHz, depending on the selected input filter.

Q4: Does the DP840 provide diagnostic capabilities?
A4: Yes, the module features on-board diagnostics, including detection of power supply errors, open wire, and short circuits.

Q5: What is the maximum cable length supported?
A5: The DP840 supports field cables up to 200 meters when using a twisted-pair configuration.

For more detailed information, please check official datasheet: S800_I_O_Modules_and_Termination_Units