Honeywell Triconex 3351S2 - 8-Channel HART-Compatible 4-20mA Analog Input Module

Honeywell Triconex 3351S2 – 8-Channel HART-Compatible 4-20mA Analog Input Module

In stock

Product Introduction:
The Triconex 3351S2 is an 8-channel analog input module with HART protocol support, representing the most advanced analog input capability in the Triconex family. The “3351” identifies it as a HART-capable analog input, while the “S2” denotes the Series 2, S2 revision. This module reads 8 independent 4-20mA signals from field transmitters and supports the HART (Highway Addressable Remote Transducer) protocol, allowing bidirectional digital communication with smart transmitters. This means the module can not only read the process variable (e.g., pressure) but also read diagnostic data from the transmitter (e.g., sensor health, calibration date, error codes) without any additional wiring.

Technical Specifications:
Module Type: 8-Channel HART-Compatible Analog Input Module
Series: Series 2, S2 Revision
Channels: 8 independent analog input channels
Input Type: 4-20mA with HART overlay (digital communication on the same wires)
Resolution: 16-bit A/D conversion
Accuracy: +/- 0.05% of full scale (superior to standard analog modules)
HART Protocol: HART 7 compliant, supports all standard HART commands
Update Rate: 250ms per channel (analog), 500ms per channel (HART polling)
Isolation: 1500V RMS channel-to-ground
Diagnostics: Burnout detection, overrange, underrange, HART communication loss, transmitter fault
Power: 5V DC from backplane + HART modem power (24V DC field power)
Form Factor: 3U Triconex Eurocard
Operating Temperature: 0 to 60 degrees Celsius

Functional Features:
HART Communication: Reads diagnostic data from smart transmitters (sensor health, calibration status, error codes) over the same 4-20mA wires.
Dual-Mode Operation: Simultaneously reads the analog process variable and the digital HART data, providing both process and diagnostic information.
Per-Channel Configuration: Each channel independently configurable for input range, engineering units, and HART polling interval.
Transmitter Diagnostics: Detects HART communication loss, transmitter fault, and out-of-range conditions on every channel.
Remote Calibration: Allows remote calibration of HART transmitters from the control room without sending a technician to the field.
LED Indicators: Per-channel LEDs show analog status (green) and HART communication status (amber).

Application Scenarios:
Smart Transmitter Monitoring: Reads pressure, temperature, flow, and level transmitters with HART diagnostics for predictive maintenance.
Calibration Management: Monitors transmitter calibration status and alerts operators when a transmitter is due for calibration.
Advanced Process Control: Provides both process variable and diagnostic data to the safety controller for enhanced decision-making.
Asset Management: Collects transmitter health data for plant-wide asset management systems.
Remote Diagnostics: Allows engineers to diagnose transmitter faults from the control room via HART polling.