Product Overview
The ABB DP820 is a two-channel pulse counting module engineered for incremental pulse transmitters operating up to 1.5 MHz. Each channel integrates counters and registers for precise position/length and speed/frequency measurement, making it an essential component for high-speed industrial monitoring and control systems.
Designed for demanding environments, the DP820 supports a wide range of transducer interfaces, including RS422, +5 V, +12 V, +24 V, and 13 mA, ensuring compatibility with diverse field devices. Its robust construction and individual channel isolation deliver reliable performance in mission-critical applications.
Key Features
- Two independent channels for simultaneous pulse counting and frequency measurement
- Interfaces for RS422, 5 V, 12 V, 24 V, and 13 mA transducer signal levels
- Bidirectional 29-bit counter for pulse count (length/position) with high resolution
- Frequency measurement range from 0.25 Hz to 1.5 MHz
- Individually isolated channels, channel-to-channel and to circuit common
- Compatible with Module Termination Units TU810V1, TU812V1, TU814V1, TU830V1, and TU833
Technical Specifications
Below are the core specifications for the ABB DP820, providing the technical foundation for your application design.
| Parameter |
Value |
| Article Number |
3BSE013228R1 |
| Type |
Pulse counter |
| Signal Specification |
24 V d.c. (12 - 32 V d.c.) |
| Number of Channels |
2 |
| Input Impedance (DI-input) |
2.5 kΩ |
| Maximum Field Cable Length |
200 meters (218 yards) |
| Rated Insulation Voltage |
50 V |
| Dielectric Test Voltage |
500 V a.c. |
| Power Dissipation |
2.5 W |
| Current Consumption +5 V Modulebus |
120 mA |
| Current Consumption +24 V Modulebus |
0 |
| Current Consumption +24 V External |
0 |
| Operating Temperature |
0 to +55 °C (+32 to +131 °F) |
| Storage Temperature |
-40 to +70 °C (-40 to +158 °F) |
| Relative Humidity |
5 to 95 %, non-condensing |
| Protection Class |
IP20 according to IEC 60529 |
| Weight |
0.15 kg (0.33 lbs.) |
Industry Applications
The ABB DP820 excels in applications requiring precise position tracking and speed monitoring. Typical use cases include:
-
Packaging Machinery: Monitor conveyor belt speed and product position for accurate cut-to-length operations.
-
Material Handling: Track carton movement and synchronize robotic pick-and-place systems.
-
Metal Processing: Measure roller speed and strip length in rolling mills, ensuring consistent product quality.
In each scenario, the DP820's simultaneous count and frequency measurement capability reduces the need for separate sensors, simplifying installation and lowering overall system cost.
Installation & Setup
Proper installation ensures optimal performance. Follow these guidelines:
- Mount the DP820 on an S800 series rail using the compatible Module Termination Unit (TU810V1, TU812V1, TU814V1, TU830V1, or TU833).
- Ensure the module is keyed with code CB to prevent incorrect insertion.
- Connect pulse transmitters using balanced inputs, respecting the interface voltage (RS422, +5 V, +12 V, +24 V, or 13 mA).
- Keep field cable lengths within 200 meters to avoid signal degradation.
- Verify that the process voltage is within the specified 12-32 V d.c. range.
Maintenance & Reliability
The DP820 is designed for long service life, but routine checks help maximize uptime:
- Periodically inspect front LEDs (Pulse, UP, STrobe, DI, SYnch, DO, TP) to confirm channel status.
- Monitor ambient temperature; for vertical mounting in compact MTU, derate to 40 °C (104 °F) maximum.
- Keep the module free from dust and moisture, as it is rated IP20.
- Verify that the module's power dissipation of 2.5 W is within the enclosure's cooling capacity.
Compatibility & Integration
The ABB DP820 integrates seamlessly with the S800 I/O system. It requires a compatible Module Termination Unit (TU810, TU812, TU814, TU830, or TU833) for connection to the field wiring. The module communicates over the Modulebus, drawing 120 mA from the +5 V supply. For advanced diagnostics, the module provides per-channel supervision and status indications (Module Error, Module Warning, Channel error).
Selection Guide
Before purchasing, verify your system requirements:
- Confirm the transducer interface type (RS422, +5 V, +12 V, +24 V, or 13 mA).
- Ensure the Module Termination Unit matches your wiring configuration.
- Check that the field cable length does not exceed 200 meters.
- Review the environmental conditions (temperature, humidity, and pollution degree) to ensure compliance.
For reliable supply and technical support, PLC Source PRO offers genuine ABB DP820 modules with fast worldwide shipping.