ICS Triplex T9400 Series Modules T9402 Digital Input Module

Technical Dossier

Product Details And Specifications

ICS Triplex T9400 Series Technical Notes

The Evolution of T9400 Series Architecture

The T9400 Series was introduced as part of ICS Triplex's second-generation Trusted® platform, succeeding the earlier T8000 chassis-based architecture. The transition introduced a modular backplane design with dedicated I/O slots, a standardized 32-channel density per module, and a high-speed TMR voting bus that operates independently of the process I/O bus. Early revisions (pre-2005) used parallel backplane communication; later hardware revisions migrated to a serial TMR bus, improving noise immunity in high-EMI environments such as motor control centers and substation switchgear rooms.

T9400 Series Full Catalog & Functionalities (SKU List)

The following SKUs represent the core module population of the T9400 Series, organized by functional category. All models are designed for use within the ICS Triplex Trusted® TMR chassis.

Digital Input (DI) Modules

• T9402: 32-channel 24 VDC digital input module, TMR-voted, SIL 3 rated, field-side isolated
• T9401: 32-channel 120 VAC digital input module, TMR-voted, for high-voltage field devices
• T9403: 32-channel 48 VDC digital input module, extended voltage range DI for NAMUR sensors

Digital Output (DO) Modules

• T9452: 16-channel 24 VDC digital output module, solid-state relay, SIL 3 rated
• T9451: 16-channel 120 VAC digital output module, triac output, process shutdown applications
• T9453: 8-channel high-current digital output module, 2A per channel, valve actuator drive

Analog Input (AI) Modules

• T9310: 16-channel 4–20 mA analog input module, 16-bit resolution, HART pass-through capable
• T9311: 16-channel thermocouple input module, supports J/K/T/E/R/S/B types, cold-junction compensated
• T9312: 16-channel RTD input module, 2/3/4-wire PT100/PT1000 configuration
• T9313: 16-channel millivolt/voltage input module, ±10 V / ±100 mV selectable range

Analog Output (AO) Modules

• T9360: 8-channel 4–20 mA analog output module, 12-bit resolution, loop-powered
• T9361: 8-channel voltage output module, 0–10 V, for positioner and valve control

CPU / Controller Modules

• T9110: Trusted Communications Unit (TCU), primary TMR controller, manages I/O bus and inter-chassis communication
• T9100: Legacy TMR processor module, earlier hardware revision of the T9110, 32 MB application memory

Power Supply Modules

• T9800: 24 VDC redundant power supply module, 20A output, dual-feed input with automatic failover
• T9801: 120/240 VAC to 24 VDC power supply module, universal input, chassis-mount

Communication & Adapter Modules

• T9200: Modbus RTU/TCP communication module, dual-port RS-485 and Ethernet, gateway function
• T9201: PROFIBUS DP slave adapter module, 12 Mbit/s, for DCS integration

Sourcing Hard-to-Find & Obsolete T9400 Series Parts

DriveKNMS maintains a dedicated inventory of T9400 Series modules sourced from decommissioned plant assets, controlled surplus, and verified refurbishment programs. All units are inspected against original ICS Triplex hardware specifications prior to dispatch. DriveKNMS provides lifecycle extension support including: module-level availability checks within 24 hours, cross-reference matching for superseded part numbers, and documentation of hardware revision levels to ensure chassis compatibility. For facilities operating under IEC 61511 functional safety management requirements, DriveKNMS can supply modules with full traceability documentation upon request.

Quality Control for the T9400 Series Range

The T9400 Series presents specific technical challenges during incoming inspection due to its TMR voting architecture and high-density backplane connector interface. DriveKNMS applies a structured test protocol to all T9400 modules prior to shipment:

• Visual inspection of the 96-pin DIN backplane connector for pin deformation, oxidation, and mechanical damage — the primary failure mode for modules removed from high-vibration installations
• Power-on functional test using a dedicated T9400 chassis test rig, verifying module self-diagnostics and LED status codes against ICS Triplex hardware reference documentation
• For DI modules (T9401/T9402/T9403): channel-by-channel input state verification using a calibrated signal injector across all 32 channels
• For AI modules (T9310/T9311/T9312): accuracy verification at 0%, 25%, 50%, 75%, and 100% of input range using a traceable signal source; results logged against module serial number
• For DO modules (T9451/T9452/T9453): output continuity and load switching test at rated current
• Firmware revision identification and documentation, cross-referenced against known-compatible TCU firmware versions
• Final burn-in soak: 48-hour powered operation prior to packaging