Configured for high-integrity digital signal execution in Trusted safety systems, the ICS Triplex T3481 (T3481 TMR Digital Output Module) provides direct physical signal processing via a 16-channel guarded output interface.
| Parameter | Specification |
|---|---|
| Model | T3481 |
| Brand | ICS Triplex |
| Origin | United States |
| Weight | 1.82 kg |
| Dimensions | 3.2 cm x 26.5 cm x 35.8 cm |
| Operating Temp | -20 deg C to +60 deg C |
| Power Consumption | 4 W |
| Output Channels | 16 isolated digital outputs |
| Output Voltage | 24 VDC |
| Isolation | 3000 VAC channel-to-channel |
The T3481 integrates triple modular redundancy (TMR) to maintain fail-safe state execution across all 16 output channels. Each high-side transistor output provides independent galvanic isolation, ensuring that electrical transients or downstream faults remain contained within the individual circuit loop. The module performs continuous diagnostic monitoring to detect open circuits, short circuits, and stuck-on/stuck-off states, reporting status anomalies directly to the controller. Adhering to IEC 61508 SIL 3 standards, the T3481 facilitates high-integrity actuation for emergency shutdown and process safety interlocks while maintaining physical isolation between the field-side load and the internal backplane logic.
Q: Can the T3481 be removed or replaced while the Trusted chassis is powered on?
A: Yes, the module supports hot-swappable installation. The internal design permits safe removal and insertion into the backplane without causing a system-level reset or affecting the execution of redundant channels.
Q: How does the T3481 identify an output fault during standard operations?
A: The module executes active voltage and current loop monitoring. If an output channel deviates from its commanded state, or if a load-side short circuit is detected, the module signals a fault condition via its integrated status LEDs and communicates the failure to the main processor.
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