You are here:
- Home
- Product
- I/O Modules
- Digital Input Modules
- ICS Triplex T8240C Trusted Digital Input Module
SKU: T8240C
ICS Triplex T8240C Trusted Digital Input Module
The ICS Triplex T8240C is a 40-channel, SIL 3-rated Digital Input Module for the Trusted TMR system. Featuring conformally coated circuitry and advanced line monitoring, this 24 VDC module delivers the high-density signal acquisition and fault tolerance required for safety-instrumented systems.
Technical Overview
The ICS Triplex T8240C functions as a high-integrity, 40-channel Digital Input Module designed for the Trusted Triple Modular Redundant (TMR) safety system. This module serves as the primary interface for capturing discrete field data from sensors, switches, and contacts in safety-critical environments. Because the T8240C utilizes a “C” variant specification, it features conformally coated electronics, which effectively protect the internal circuitry against corrosion, humidity, and atmospheric pollutants. By providing 40 independent channels within a single high-density module, the T8240C optimizes rack space while maintaining the highest levels of safety and fault tolerance.
TMR Architecture and Diagnostic Logic
The T8240C manages input signals through a sophisticated Triple Modular Redundant (TMR) architecture. Each of the 40 input signals is internally routed to three separate processing paths. To ensure maximum data integrity, the module performs hardware “voting” to determine the true state of each input. Consequently, if a single internal component fails, the module continues to operate correctly using the remaining two paths. Furthermore, the T8240C incorporates comprehensive onboard diagnostics that continuously monitor for internal hardware discrepancies and external field wiring faults.
In addition to its voting logic, the module features advanced line monitoring capabilities. This allows the system to distinguish between a legitimate signal state and a field wiring issue, such as an open circuit or a short to ground. Moreover, since the T8240C supports high-speed data acquisition, it captures rapid process changes with millisecond precision. To further enhance system availability, the module supports “Hot-Replacement,” enabling technicians to swap out a unit without interrupting the safety process. Ultimately, the T8240C provides the robust, fail-safe monitoring required for the most demanding applications in the energy and chemical sectors.
Key Technical Characteristics
- Brand:Â ICS Triplex (Rockwell Automation)
- Model Number:Â T8240C
- Product Series:Â Trusted TMR Safety System
- Module Type:Â Digital Input (DI)
- Input Capacity:Â 40 Isolated Channels
- Safety Integrity:Â SIL 3 (IEC 61508)
- Architecture:Â Triple Modular Redundant (TMR)
- Environmental Protection:Â Conformal Coating (C-variant)
- Input Voltage:Â 24 VDC (Nominal)
- Diagnostic Features:Â Line monitoring (short-circuit/open-wire) and self-test
Primary Applications
- Monitoring emergency shutdown (ESD) pushbuttons and field limit switches.
- Interfacing with fire and gas (F&G) detection devices and status contacts.
- Managing turbine trip signals and auxiliary machinery interlocks.
- Supervising burner management system (BMS) discrete sensors.
- Capturing sequence-of-events (SOE) data for post-fault analysis in power plants.
Tags: Digital Input Module
You may also like
The GE Multilin UR7BH is a high-performance communication processor module for Universal Relay systems. It supports IEC 61850 and DNP 3.0 protocols. This module provides dual-redundant Ethernet connectivity for reliable industrial automation and power system protection.
Triconex 3501T Digital Input Module
The Triconex 3501T is a 32-point TMR digital input module designed for 115V AC/DC signals. It provides triple-redundant signal processing and integrated diagnostics for Safety Instrumented Systems, ensuring maximum uptime and fault tolerance in critical process control environments.
Yokogawa ADV141-S12Â S1 Digital Input Module
The Yokogawa ADV141-S12 S1 is a 16-channel digital input module for CENTUM VP systems. Built for extreme temperatures and high isolation, it provides reliable signal monitoring and seamless integration for demanding industrial automation environments.
General Electric UR6FH Multilin Digital I/O Module
The GE Multilin UR6FH is a high-speed digital I/O module for the Universal Relay series. It features 8 fast Form-C outputs and operates on 24 VDC. This module provides rapid response times and secure signal interfacing for advanced power system protection and substation automation applications.
Yokogawa ADV151-P53Â S2 Digital Input Module
The Yokogawa ADV151-P53 S2 is a high-density 32-channel digital input module for CENTUM VP systems. It provides 24V DC isolated signal acquisition with advanced noise filtering. This durable, hot-swappable module ensures reliable status monitoring for critical industrial automation processes.
Yokogawa ADV142-S02Â S1 Digital Input Module
The Yokogawa ADV142-S02 S1 is a high-performance 32-channel digital input module for CENTUM VP systems. It features 24V DC isolated inputs and robust noise protection. This reliable I/O module supports hot-swapping and provides clear LED diagnostics for industrial automation status monitoring.
Yokogawa ADV159-P00 Digital Input Module
The Yokogawa ADV159-P00 is a 32-channel digital input module designed for the CENTUM VP system. It offers isolated signal acquisition, supports dual-redundancy, and features a hot-swappable design. This module ensures high-speed, reliable monitoring for critical industrial automation tasks.
Yokogawa ADV142-S03Â S1 High Precision Digital Output Module
The Yokogawa ADV142-S03 S1 is a 32-channel high-voltage digital input module for the CENTUM VP system. It features optical isolation, 200-240V AC support, and a rugged Japan-made design. This hot-swappable module provides precise signal acquisition for demanding industrial control environments.
Yokogawa CENTUM VP ADV151-P00 S2 ATD5A-00 Digital Input Module
The Yokogawa ADV151-P00 S2 ATD5A-00 is a high-performance 32-channel digital input module for the CENTUM VP DCS. It provides 24 V DC signal acquisition, IP20 protection, and a wide operating temperature range for reliable industrial automation and process control.
Yokogawa CENTUM VP ADV151-E50 S2 Digital Input Module
The Yokogawa ADV151-E50 S2 is a 32-channel digital input module designed for the CENTUM VP DCS. It provides high-speed discrete signal processing and supports Sequence of Events (SOE) data capture. This Japan-manufactured module offers reliable sink/source compatibility for demanding industrial control applications.
Yokogawa ADV161-P50 S2 Digital Input Module for CENTUM VP
The Yokogawa ADV161-P50 S2 is a 64-channel high-density digital input module for the CENTUM VP DCS. Engineered for 24 VDC signals, this FIO module provides reliable, isolated data acquisition and a compact footprint for demanding industrial automation environments.
Yokogawa ADV151-P60 S2 Digital Input Module
The Yokogawa ADV151-P60 S2 is a high-density 64-channel digital input module designed for the CENTUM VP DCS. It provides reliable 24V DC signal monitoring with integrated photocoupler isolation and hot-swap support, making it ideal for large-scale industrial automation and control system expansions.


























