Overview
Manuals
Key Comparison: T9801 vs. T9802 vs. T9803
Maintenance Note
Features:
- Digital Input Termination Assembly, TMR
- 16-channel Triple Modular Redundant (TMR) Digital Input Termination Assembly (TA)
- It is fully certified for use in SIL 3 (Safety Integrity Level 3) systems according to IEC 61508
The ICS Triplex AADvance T9803 series is a 16-channel, triple-modular redundancy (TMR) isolated digital input terminal block designed for high-security and high-availability industrial environments. It is primarily used in Emergency Safety Control (ESD) systems, Fire and Gas Monitoring (F&G) systems, and critical industrial protection and control systems. This component serves as the core physical and electrical interface between field digital instruments (such as switches and sensors) and the AADvance controller, providing up to 16 fully isolated input channels and supporting extremely high noise immunity.
It can simultaneously connect and adapt to three independent parallel T9401 or T9402 digital input modules, thereby eliminating the risk of downtime caused by single-point hardware failure. In addition, each channel of this wiring assembly integrates a highly reliable fuse protection mechanism, which can effectively isolate field overload current, thereby protecting the expensive back-end controller; it also has advanced line monitoring functions, which can automatically diagnose open circuit or short circuit faults in field wiring in real time.
The T9803 ICS triplex Digital Input FTA Module may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
ICS Triplex T9803 Digital Input FTA Module maunal(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The physical differences between these three models in the digital input series determine the number of active controller modules available for backup field lines:
T9801 (Simplified): Routes 16 non-isolated signals directly to a single T9401/T9402 digital input module.
T9802 (Duplex): Routes 16 isolated signals to two side-by-side modules for standard hardware redundancy.
T9803 (TMR): Distributes and routes 16 isolated digital input signals to three independent parallel digital input modules on the AADvance backplane.
According to a safety bulletin issued by Rockwell Automation, some batches of AADvance terminal assemblies are defective, with some 50mA fuses already blown at the factory. If you encounter "open circuit" or "channel failure" errors immediately before connecting field devices when installing new or remaining T9803 circuit boards, please use a standard multimeter to check the miniature fuses on the circuit board.
