ICS Triplex T8824 40-Channel 120Vac Digital Input FTA

Overview

The ICS Triplex T8824 operates as a 40-channel 120 Vac digital input field termination assembly designed for Trusted TMR safety systems from Rockwell Automation. It connects field devices to the corresponding Trusted digital input modules and supports high-integrity applications that require stable, fault-tolerant signal handling. Moreover, it simplifies installation with standard DIN-rail compatibility and provides fused protection on every input channel.

Safety Architecture

The T8824 strengthens system reliability because it works within the Trusted triple-modular-redundant environment. It enhances functional safety since it maintains accurate signal paths even during processor faults in the associated control modules. Additionally, it supports continuous self-diagnostics, which help technicians detect wiring or input abnormalities before they affect system performance.

Technical Specifications

Specification	Detail
Model	T8824
Series	ICS Triplex Trusted TMR System
Manufacturer	Rockwell Automation
Input Voltage	90–150 Vac (120 Vac nominal)
Input Channels	40 isolated digital input channels
Field Wiring Type	Standard two-wire field device connections
Per-Channel Fuse	50 mA protection fuse
Input Current	Approximately 5–6 mA at 120 Vac
Power Dissipation	Up to 26 W total across 40 channels
Diagnostics	Continuous channel monitoring
Safety Certification	IEC 61508 SIL 3, EN 50128
Mounting Method	Standard DIN-rail mounting

Dimensions and Weight

Height: 111 mm
Width: 335 mm
Depth: 51 mm
Weight: 0.9 kg
Country of Origin: United States

Performance and Reliability

The T8824 improves channel stability because each input uses fused protection to isolate individual faults. It enhances troubleshooting since its diagnostic functions help engineers identify wiring issues quickly. Furthermore, it ensures consistent performance in safety-critical networks by maintaining clean signal transitions even in electrically noisy environments.

Application Areas

The T8824 fits emergency shutdown systems in oil and gas plants, and it supports high-voltage signal inputs in power generation facilities. It also suits chemical processing platforms and machine safety systems that demand certified SIL-rated digital input integrity.

Integration Notes

Engineers mount the T8824 on DIN rails and wire field devices directly through its terminal points. They pair it with Trusted 120 Vac TMR input modules to build complete redundant architectures. Additionally, they verify fuse ratings during commissioning to ensure stable protection across all channels.

Summary

The ICS Triplex T8824 delivers reliable 120 Vac digital input connectivity for Trusted safety systems. Its 40-channel layout, fused isolation, and diagnostic functions create a robust interface for high-integrity industrial automation.