ICS T9402, AADvance 16‑Channel Isolated 24VDC Digital Input Module

1. Basic Information

2. Electrical Specifications

• Channel count：16 galvanically isolated digital input channels
• Nominal input voltage：24 VDC；operating range 0‑32 VDC
• Per‑channel input current：6.5 mA typical
• Isolation：2500 Vrms channel‑to‑backplane isolation
• Response time：＜1 ms
• Backplane supply：18‑32 VDC; typical power consumption 3.8 W
• Diagnostics：Per‑channel fault detection, open‑circuit / short‑circuit monitoring supported; per‑channel LED status indicator on front panel
• Hot‑swap：Module hot‑swappable, no system trip during replacement
• Architecture：Works with AADvance TMR processor T9110 / T9110C; supports simplex, dual or TMR 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：T9402C = 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.

4. Main Functions

1. 16‑channel isolated digital signal acquisition: Receive 2‑wire field discrete signals from pressure switches, level switches, smoke detectors, flame detectors, manual call‑points and relay contacts.
2. Per‑channel LED indication for channel status and fault diagnosis for fast on‑site troubleshooting.
3. Comprehensive built‑in diagnostics: detect channel fault, open‑circuit and short‑circuit 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 under AADvance Workbench.
6. Only interoperable with AADvance platform (T9110/T9110C processor), cannot work with Trusted T8000 T84xx / T88xx hardware.

5. Typical Applications

1. On‑shore / offshore SIS‑ESD emergency shutdown system digital‑input signal collection.
2. Fire & Gas safety system for fire detectors and alarm input signals.
3. Petrochemical, power‑plant safety‑critical discrete signal monitoring.

AADvance related I/O reference

|Part No.|Description|Remark|

|—|—|—|

|T9402|16‑Ch 24VDC Digital Input Module|Standard onshore|

|T9402C|16‑Ch Digital Input Module, Conformal Coated|Offshore / high‑corrosion environment|

|T9451|8‑Ch Digital Output Module|AADvance DO module|

6. Important Notes

1. T9402 belongs to AADvance platform, not Trusted T8000. Incompatible with T8000 series cards and T88xx FTA terminals. Must pair with AADvance dedicated FTA.
2. Two variants available: T9402(standard), T9402C(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.