Overview

The DL-4100 HART MUX Module is an 8-channel HART multiplexer designed to integrate HART-based transmitters into industrial automation systems. It supports RS-485 MODBUS RTU communication, making it suitable for applications requiring remote monitoring and data acquisition.

1. Safety Information (p.3-4)

• Electrical Hazards:
  • Ensure power isolation before installation or maintenance.
  • High voltage risks present; exercise caution.
• Electrostatic Discharge (ESD) Precautions:
  • Avoid static electricity discharges.
  • Handle PCBs with care and store in conductive packaging.

2. Storage Before Installation (p.5)

• Store in a dry, sheltered area to prevent environmental damage.
• Inspect all components for physical damage before installation.

3. System Description & Pin Assignments (p.6-7)

• Functionality:
  • Converts HART 4-20mA analog signals into digital data via MODBUS RTU.
  • Supports 8 input channels for simultaneous signal acquisition.
  • Features LED indicators for Power & Communication status.
• Pin Assignments:
  • CH1 - CH8: Individual HART signal connections.
  • RS-485 Communication Ports: Primary and auxiliary connections.
  • 24V DC Power Input.

4. Installation & Wiring (p.8)

• Analog Input Signal Connection:
  • Connect 4-20mA HART signals from field transmitters.
• Power & Communication Connections:
  • 24V DC power supply.
  • RS-485 MODBUS RTU for system integration.

5. Communication & Data Handling (p.9-11)

• Supported Baud Rates:
  • 1200, 2400, 4800, 9600, 38400, 57600, 115200.
• MODBUS Data Registers:
  • Raw Data Acquisition: Provides primary, secondary, tertiary, and quaternary variables per channel.
  • Unit Readings: Data types include mA values, engineering units, and device-specific codes.

6. Technical Specifications (p.6)

• Power Supply: 24V DC, 2VA consumption.
• Input Channels: 8 x HART 4-20mA (2-wire).
• Accuracy: ±0.2% Full Scale.
• Communication Interfaces:
  • 2 x RS-485 MODBUS RTU.
• Environmental Conditions:
  • Operating Temperature: 0°C to 70°C.
  • Storage Temperature: -20°C to 70°C.
• Mechanical Data:
  • Material: Aluminum, Chromate Coating.
  • Dimensions: 105 × 27 × 74 mm.
  • Protection Class: IP20.

7. Revision History (p.12-13)

• Version R1 (2025.03.01) – First revision of the technical manual.