The Triconex 3505E Digital Input Module is a high-reliability I/O component designed for Safety Instrumented Systems (SIS) operating under Triple Modular Redundancy (TMR) architecture. It is engineered to capture discrete signals from field devices—such as switches, sensors, and safety contacts—and transmit them to the safety controller with maximum integrity.
With advanced diagnostics and low-threshold detection capabilities, the 3505E ensures accurate signal validation even in harsh industrial environments. It is widely deployed in mission-critical systems where continuous monitoring, fault detection, and SIL-level safety performance are required.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Digital Input Module |
| Model | 3505E |
| System Compatibility | Triconex Safety Instrumented Systems (TMR) |
| Input Channels | 32 digital inputs (grouped in 8) |
| Input Voltage Range | 20 – 42.5 V DC (nominal 24 V DC) |
| Input Type | Low-threshold digital input |
| Switching Levels | ON > 12 V / OFF < 4 V |
| Input Delay | < 8 ms (OFF→ON), < 15 ms (ON→OFF) |
| Isolation | ≥ 1500 V DC (channel to logic) |
| Input Current | ~3–5 mA typical |
| Diagnostics | PASS / FAULT / ACTIVE, per-channel monitoring |
| Architecture | Triple Modular Redundancy (TMR) |
| Operating Temperature | –40 °C to +70 °C |
| Storage Temperature | –40 °C to +85 °C |
| Mounting | Rack-mounted in Tricon chassis |
| Dimensions (H × W × D) | 263 × 58 × 28 mm |
| Weight | Approx. 2.3 – 2.5 kg |
Key parameters such as 32 channels, 20–42.5 V input range, and fast response times are standard for this module class.
Recommended Related Models
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