Skip to content

AI FTA Wiring Diagram

Wiring Diagram – AI FTA (Analog Input Field Terminal Assembly)

What is AI FTA?

The AI FTA is designed to simplify field wiring by allowing direct connections from analog field instruments (2-wire or 4-wire transmitters) to the analog input module.
Each channel supports individual selection between 2-wire and 4-wire modes using a switch, ensuring high flexibility and ease of use.

DI Wiring Diagram

Wiring Sections

Analog Signal Wiring

  • Each of the 16 channels can be configured as 2-wire or 4-wire input
  • Channel Numbering: CH1 to CH16
  • Terminal Layout: Every channel has three main terminals:
  • SIG
  • COM
  • +24V (for 2-wire power supply)

Wire Transmitter Connection

  • Set the corresponding switch for the channel to "2-wire"

Wiring:

  • Connect + of transmitter to +24V terminal
  • Connect of transmitter to SIG terminal
  • COM is internally connected for current return

Shield / Grounding

  • Use shielded twisted pair cables for signal wires
  • Connect shielding to the designated SHIELD terminal or ground bar for noise reduction
  • Avoid grounding at both ends to prevent ground loops

Important Wiring Guidelines

  • ✅ Ensure proper switch selection (2W/4W) before wiring
  • Do not connect both 2-wire and 4-wire on the same channel
  • 🧪 Use multimeter test points for diagnostics without removing connections