ICS Triplex T3420A Fault-Tolerant Analog Input Module

The ICS Triplex T3420A delivers robust analog signal acquisition with fault-tolerant operation and hot-swap capabilities for industrial control systems. It provides precise 12-bit resolution with selectable input ranges, making it ideal for high-reliability automation applications.

Key Features

The T3420A ensures continuous monitoring and control, even in safety-critical environments.

Fault-Tolerant Operation: Works in parallel with redundant modules for uninterrupted functionality.
Hot Replaceable: Supports module replacement without shutting down the system.
Selectable Input Ranges: Jumper-configurable ranges accommodate various sensor types.
High Resolution: 12-bit resolution offers 1 part in 4096 accuracy for precise measurements.
Fast Sample Rate: 1.8 ms for differential inputs, 3.6 ms for single-ended inputs.
Front Panel Indicators: Provides active and fault status visibility for easy diagnostics.
Safety Certified: TÜV certified, Risk Class 5 for industrial applications.

Technical Specifications

Parameter	Specification
Model Number	T3420A
Input Channels	16 single-ended or 8 differential
Input Interface	External 250 Ω resistors (T3325-XX)
Input Ranges	Jumper-selectable
Resolution	12-bit (1 part in 4096)
Sample Rate	1.8 ms (differential), 3.6 ms (single-ended)
Rejection Versions	60 Hz standard, fast-response variant (T3420AF)
Isolation	2500 V between analog and digital logic
Indicators	Individual front-panel active and fault indicators
Fault Tolerance	Parallel redundant module operation
Hot Replaceable	Yes
Safety Certification	TÜV, Risk Class 5
Power Supply	24 VDC nominal
Operating Temperature	0°C to +60°C (32°F to 140°F)
Storage Temperature	–25°C to +70°C (–13°F to 158°F)
Humidity	10–95% RH non-condensing
Weight	1.2 kg (2.65 lb)
Mounting	DIN rail compatible

Origin

Parameter	Specification
Country of Manufacture	USA

Applications

High-reliability process control and machine monitoring in industrial automation.
Fault-tolerant analog signal acquisition in safety-critical systems.
Real-time data acquisition for PLCs in oil, gas, power, and manufacturing plants.
Integration with redundant modules for continuous operation during maintenance.