Honeywell Triconex 275-2 - Dual Channel 4-20mA Analog Input Module (Series 2)

Honeywell Triconex 275-2 – Dual Channel 4-20mA Analog Input Module (Series 2)

In stock

Product Introduction:
The Triconex 275-2 is a dual-channel analog input module designed to accept 4-20mA current loop signals from field transmitters. The “275” identifies it as an analog input module, while the “2” indicates it is part of the Series 2 family, which offers improved accuracy and diagnostics over Series 1. This module provides two independent input channels, each capable of reading a single 4-20mA signal from a pressure transmitter, temperature transmitter, level transmitter, or flow transmitter. The module converts the analog current into a digital value that the 2381 processor uses in its safety logic calculations. The “-2” suffix also denotes the dual-channel configuration.

Technical Specifications:
Module Type: Dual Channel Analog Input Module
Series: Series 2
Channels: 2 independent channels
Input Type: 4-20mA (2-wire loop powered)
Resolution: 16-bit A/D conversion
Accuracy: +/- 0.1% of full scale
Input Impedance: 250 Ohms (burden resistor included)
Isolation: 500V RMS channel-to-ground, 1500V RMS channel-to-channel
Update Rate: 100ms per channel (configurable)
Common Mode Rejection: Greater than 120dB
Diagnostics: Burnout detection (open wire), overrange detection, underrange detection
Power: 5V DC from backplane
Form Factor: Standard Triconex Eurocard (3U height)
Operating Temperature: 0 to 60 degrees Celsius

Functional Features:
Dual Independent Channels: Two completely isolated input channels allow monitoring of two different process variables on a single module.
Burnout Detection: Automatically detects if a transmitter wire is broken (open circuit) and alarms the CPU immediately.
Overrange/Underrange Alarms: Detects if the input signal exceeds 20.5mA or drops below 3.5mA, indicating a transmitter fault.
Per-Channel Configuration: Each channel can be independently scaled (e.g., 4mA = 0 PSI, 20mA = 1000 PSI).
LED Indicators: Per-channel LEDs show input status (green for normal, red for alarm) without software.
Hot Swappable: Can be removed and replaced in a redundant system without shutting down the safety function.