ICS TRIPLEX T3420A Analog Input Module

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For ICS Triplex’s T3420A module, there are two versions available: one with 60 Hz noise rejection (T3420A), ideal for environments needing high noise immunity, and the other with a fast response rate (T3420AF) for settings where low latency is critical.

Each T3420A module handles 16 field analog signals, providing either sixteen single-ended or eight differential voltage inputs. Current input interfacing is possible using external 250-ohm resistors for current-to-voltage conversion. The module offers jumper-selectable input ranges and operates with 12-bit analog-to-digital resolution (1 part in 4096), enabling detailed data capture.

Sampling rates differ based on configuration: the differential mode samples all channels in 1.8 ms, while the single-ended mode has a sampling rate of 3.6 ms. The T3420A ensures 2500-volt isolation between analog and digital circuits, which protects against electrical faults, and provides fault containment across the Expander Bus, the module itself, and the Expander Chassis. This design maximizes system availability by localizing any potential faults.

FAQ:
1. What is the input resolution and sampling rate of the T3420A module?
The T3420A features 12-bit analog-to-digital resolution, providing a fine resolution of 1 part in 4096.
The sampling rate varies based on configuration: differential mode samples all channels at 1.8 ms, while single-ended mode has a sampling rate of 3.6 ms.

2. Does the T3420A module offer electrical isolation?
Yes, the T3420A provides 2500-volt isolation between its analog and digital circuits, which helps protect against electrical faults and enhances module reliability.

3. What fault containment features does the T3420A include?
The T3420A module provides fault containment for the Expander Bus, the module itself, and the Expander Chassis. This design ensures that any faults are localized, maintaining overall system availability and minimizing the impact of potential failures.