I. Core Explanation (FTA = Field Terminal Assembly)

FTA‑544 is not an I/O module, but a field terminal adapter board:

It is inserted behind the Tricon AO module to convert the backplane signals into isolated analog outputs that can be wired on-site, with fuses, surge protection, and LED status indicators.

II. Specification Parameters (Official Consistent Version)

1. Channels and Signals

Channels: 4 analog output channels (AO), isolated type

Signal range (software selectable): 4–20mA (default), 0–20mA, 0–5V, 0–10V

Resolution: 16bit

Accuracy: ±0.05% FS

Response time: ≤100ms

Isolation: Channel-to-channel isolation, channel-to-backplane isolation 1500VAC

2. Electrical

Power supply: 24VDC (±10%), supplied by the backplane or external power source

Load capacity:

Current output: ≤800Ω (24V power supply)

Voltage output: ≥10kΩ

Protection: Replaceable fuses per channel, surge suppression, polarity reversal protection, overload self-recovery

Power consumption: Approximately 5W

3. Mechanical and Environmental

Size: 225 × 112 × 40mm

Weight: Approximately 0.84kg

Installation: Tricon I/O rack slot, installed in pairs with the AO module

Temperature: -40℃ ~ +70℃

Certifications: CE, UL, CSA, TUV SIL3 (overall certification for the supporting module)

4. Panel and Wiring Interface:

Inside: D‑Sub 37 connector, connects to Tricon AO module

Outside: Screw terminal block, for on-site 4–20mA/0–10V wiring

Indicators (per channel):

PWR (green): Power supply on the terminal board is normal

CH1–CH4 (yellow): Channel output activated / fault

FAULT (red): Fuse blown / overload / open circuit

III. Compatible Modules (Required Pair)

FTA‑544 specifically for Tricon 4-channel isolated AO module:

AO3401: 4-channel 4–20mA/0–10V, isolated, SIL3 (most commonly used)

AO2401: 4-channel, point-to-point isolated, high stability

IV. Typical Applications

ESD/SIS: Control valve opening, actuator position, frequency converter setpoint

Process: Pressure / Flow / Level regulating valve analog control

Unit: Anti-surge valve, guide vane opening, governor setpoint

Safety: SIL3 loop analog output, with open circuit / short circuit diagnosis

V. Quick Reference for the Same Series (To Avoid Confusion)

FTA‑544: 4-channel isolated AO (4–20mA/0–10V), equipped with AO3401

FTA‑542: 8-channel non-isolated AO, economical

FTA‑441: 16-channel common-ground terminal board for DI (equipped with DI3301)

FTA‑442: 16-channel isolated DI terminal board (equipped with DI2301)