Triconex
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Triconex PI3381 Pulse Input / Process Interface (PI) Module
Triconex PI3381 Pulse Input / Process Interface (PI) Module
Manufacturer: Triconex
Product No.: PI3381
Product Type: process interface (PI) module
Product Origin: USA
Payment: T/T
Weight: 2700g
Shipping port: Xiamen
Warranty: 12 months
Description
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The Triconex PI3381 is a high-reliability Pulse Input / Process Interface (PI) Module designed for use within Triconex’s fault-tolerant Safety Instrumented System (SIS).
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It is used to monitor and process digital pulse or frequency signals from field sensors such as magnetic pickups, NAMUR sensors, or open-collector devices.
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The module converts these pulse inputs into process data for safety-critical control applications, ensuring high integrity and reliability.
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Typical applications include emergency shutdown systems (ESD), rotating machinery speed monitoring, and gear-tooth counting in demanding industrial environments.
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The module is known for its fault-tolerant design, wide frequency range, high accuracy, and robust isolation, ensuring optimal performance in safety-critical systems.
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Channels | 8 channels |
| Input Type | Differential and single-ended |
| Compatible Sensors | Magnetic, active, and open-collector sensors |
| Input Voltage Range | ±33 V DC maximum |
| Minimum Input (Differential) | 500 mV p-p for 2 Hz – 32 kHz |
| Minimum Input (Single-ended) | 1 V p-p for 0.5 Hz – 2 Hz |
| Input Frequency Range | 0.5 Hz – 32 kHz |
| Speed Range Example | 0 – 32 000 RPM (with 60 gear teeth) |
| Resolution | 24-bit counter resolution |
| Accuracy | ±0.1% (0.5–2 000 Hz), ±0.01% (2 000–32 000 Hz) |
| Duty Cycle | 20% – 80% |
| Minimum Pulse Width | 10 µs |
| Continuous Slew Rate | 4 000 Hz/sec or 4 000 RPM/sec (60 gear teeth example) |
| Isolation (Functional – Protective Earth) | ≥ 500 V DC |
| Isolation (Functional – Logic) | ≥ 800 V DC |
| Minimum Scan / Update Rate | 20 ms |
| Operating Temperature Range | –10 °C to +60 °C (typical) |
| Alternative Extended Range | –40 °C to +70 °C (varies by revision) |
| Dimensions | 5 cm × 16.6 cm × 26.7 cm |
| Weight | 1.25 – 2.7 kg |
