Configured for high-precision pulse counting and frequency measurement in S800 I/O architectures, the ABB DP840 (3BSE028926R1 Pulse Counter or Frequency Measurement Module) provides direct physical/electrical execution.

Part Number Breakdown & Configuration Matrix

• Base Model Designation: DP840
• Full Catalog Part Number: 3BSE028926R1
• Hardware Classification: 8-Channel Pulse Counter and Frequency Input Module
• System Family: S800 I/O Series

Hardware Specifications

PLC and DCS Integration Architecture

• Backplane Bus Communication Velocity: Interfaces with controller node backplanes via high-speed deterministic bus links to update pulse accumulation registers and frequency metrics without latency.
• I/O Density Scaling: Houses 8 independent channels capable of supporting both single and redundant system deployment requirements.
• Firmware Flash Compatibility: Supports standard system firmware updates and configuration management via platform engineering tools.
• Network Determinism: Maintains high-speed data transmission rates to ensure reliable real-time signal monitoring across distributed system environments.

Ordering Information

• 1 x DP840 3BSE028926R1 Pulse Counter or Frequency Measurement Module
• Standard electronic unit housing without external terminal blocks unless specified

Field Installation Guidelines

• DIN-Rail and Slot Mounting: Secure the module onto the designated S800 baseplate structure, verifying clean backplane pin engagement prior to locking.
• Signal Wiring & Shielding: Connect NAMUR, 12 V, or 24 V transducer lines using shielded cables, routing them away from high-voltage AC paths to prevent induced pulse jitter.
• Transducer Level Configuration: Configure individual channels according to the physical input signal standard (NAMUR, 12 V, or 24 V) via system software parameters.
• Grounding Continuity: Terminate cable shields effectively at the designated system grounding bar to maintain electromagnetic compatibility and signal integrity.

Frequently Asked Questions

• How many total input channels are provided on the DP840 module?

  The unit features 8 independent input channels configurable for individual measurement tasks.

• What signal transducer levels are supported by the inputs?

  The module supports NAMUR, 12 V, and 24 V transducer signal level inputs across all channels.

• What measurement ranges apply to frequency inputs?

  Frequency and speed measurements are supported across a range spanning from 0.5 Hz to 20 kHz.

• How are pulse counts accumulated internally?

  Pulse counting is executed via accumulation within a dedicated 16-bit counter per channel.

• Can the input channels function as standard digital inputs?

  Yes, the inputs can also be configured and read directly as standard digital input (DI) signals.

• Is the module suitable for redundant system configurations?

  Yes, the unit is engineered to support both single and redundant application setups.

• What are the physical weight and shipping dimensions?

  The unit weighs 0.16 kg with packaging dimensions of approximately 4.5 x 10.5 x 11.8 cm.

• What is the designated spare part number for this module?

  The spare part catalog number is 3BSE028926R1.