ICS T9431, AADvance 8‑Channel Isolated 4‑20mA Analogue Input Module

1. Basic Information

2. Electrical Specifications

• Channel count：8 galvanically isolated analogue input channels
• Input signal：4‑20 mA；measurement range 0‑24 mA
• Resolution：15‑bit（0.98 µA）
• Accuracy：±0.05 mA @25℃
• Channel‑to‑backplane isolation：1500 VDC（1min withstand）
• Backplane supply：18‑32 VDC；typical power consumption 3.3 W
• Diagnostics：Per‑channel fault detection；loop break / under‑range / over‑range monitoring；front‑panel per‑channel LED status indicator
• Hot‑swap：Module hot‑swappable；no system trip during replacement
• Architecture：Works with AADvance TMR processor T9110 / T9110C；supports simplex, dual or TMR voting I/O group configuration

3. Environmental Conditions

• Operating temperature：0 ℃ ~ +60 ℃
• Storage temperature：‑40 ℃ ~ +85 ℃
• Humidity：5‑95 % RH, non‑condensing
• Enclosure rating：IP20 (cabinet‑mount installation only)
• Conformal coating：T9431C = full‑PCB conformal coating(G3 offshore grade) for salt‑mist / corrosive atmosphere. Firmware segregated between standard and C‑version.
• Approvals：CE, UL, ATEX, IECEx, SIL‑3 certified.
• Mechanical：166 mm × 42 mm × 118 mm；Weight 280 g

4. Main Functions

1. 8‑channel isolated 4‑20 mA analogue signal acquisition: Interface for pressure transmitters, level transmitters, temperature transmitters in safety‑critical loops.
2. Per‑channel LED indication for channel status and fault diagnosis for fast on‑site troubleshooting.
3. Comprehensive loop diagnostics: detect open‑loop, under‑range, over‑range fault conditions; fault events time‑stamped for SOE.
4. Hot‑swap capability: replace module online without shutting‑down safety logic.
5. Flexible I/O redundancy configuration: simplex / dual / TMR voting I/O groups configured via AADvance Workbench software.
6. Only interoperable with AADvance platform (T9110/T9110C processor), cannot work with Trusted T8000 T84xx / T88xx hardware.

Related AADvance analogue I/O reference

|Part No.|Description|Remark|

|—|—|—|

|T9431|8‑Ch Analogue Input Module|Standard onshore version|

|T9431C|8‑Ch Analogue Input Module, Conformal Coated|Off‑shore / high‑corrosion environment|

|T9432|16‑Ch Analogue Input Module|16‑channel 4‑20 mA AI|

5. Typical Applications

1. On‑shore / offshore SIS‑ESD emergency shutdown system for process analogue variable acquisition.
2. Fire & Gas safety system for gas detector 4‑20 mA signal input.
3. Petrochemical, power‑plant safety‑critical pressure, level, temperature monitoring loops.

6. Important Notes

1. T9431 belongs to AADvance platform, not Trusted T8000. Incompatible with T8000 series cards and T88xx FTA terminals. Must pair with AADvance dedicated analogue FTA.
2. Two variants available: T9431(standard), T9431C(conformal coated offshore version). Firmware cannot be cross‑loaded.
3. Support simplex, dual redundant or TMR voting I/O groups configured via AADvance Workbench software.
4. Hot‑swap operation permitted; install only inside certified safety cabinet, not for direct hazardous‑zone mounting.