Description

The Mitsubishi FX2N-2DA is a 2-channel digital-to-analog (D/A) converter module designed for the FX2N series PLC. Below is a structured overview of its key features and usage:

Key Specifications

1. 1. • Channels: 2 independent output channels.

      • Output Types:

        • Voltage: 0–10V DC (external load resistance: 2kΩ–1MΩ).

        • Current: 4–20mA (external load resistance: 500Ω or less).

        • Note: Output type per channel is determined by physical wiring (voltage or current terminals).

      • Resolution: 12-bit (0–4095 digital values, but often scaled to 0–4000 for simplicity in PLC programming).

      • Conversion Time: ~4ms per channel.

      • Power Supply: Requires 24V DC external power (20.4–28.8V DC, 50mA).

Wiring Configuration

1. 1. • Voltage Output: Connect to V+ (voltage output) and COM terminals.

      • Current Output: Connect to I+ (current output) and COM terminals.

      • Ensure proper grounding and isolation to avoid noise interference.

Calibration

• Adjust zero/gain via onboard potentiometers:

  1. Send digital value 0 and adjust the zero pot until output reads 0V (voltage) or 4mA (current).

  2. Send digital value 4000 and adjust the gain pot until output reads 10V or 20mA.

Compatibility

• Primarily for FX2N PLCs. Compatible with FX3U/FX3G using an FX2N-CNV-IF adapter.

Troubleshooting

• No Output: Verify wiring, 24V power, and BFM addressing.

• Incorrect Values: Check scaling (0–4000), calibration, or interference.

Applications

• Speed control for inverters, valve positioning, or any analog actuator requiring 0–10V/4–20mA signals.