Triconex PI3381 | 4-Channel Pulse Input Module | Schneider Electric SIS--Xiongba Automation

Warranty： 1 year

Quality: Original module

Condition： New / Used

Certificate: COO(Certificate Of Original)

Warehouse: in -stock

HS Code:85389000.00

Delivery term:Express DHL/FedEx/UPS

Delivery time: Shipped in 1 week after payment

Payment term: T/T | Full payment

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Product Description & Procurement Process

TRICONEX PI3381: The Sentinel of High-Speed Safety

The TRICONEX PI3381 is a high-density, 4-channel Pulse Input module designed for use within Schneider Electric’s Triconex safety-instrumented systems (SIS). In industries where "too fast" means "too dangerous," the PI3381 acts as the ultimate guardian. It is engineered to sense high-frequency pulses from magnetic pickups or proximity probes, translating them into ultra-accurate speed or flow data.

Built with Triple Modular Redundancy (TMR) architecture at its heart, the PI3381 ensures that a single point of failure never compromises the safety loop. Whether you are monitoring a critical steam turbine in a power plant or a high-pressure compressor in a refinery, this module delivers the reliability required for SIL3 applications.

TRICONEX PI3381 Triple Modular Redundant TMR Pulse Input Module for SIL3 Safety Systems

Technical Specifications

Feature	Details
Model Number	PI3381
Manufacturer	Schneider Electric (Triconex)
Module Type	Pulse Input (PI)
Channels	4 Independent Isolated Channels
Input Frequency	Up to 20 kHz (Application dependent)
Safety Rating	SIL3 (IEC 61508)
Architecture	Triple Modular Redundancy (TMR)
Signal Compatibility	Magnetic Pickups, Active Proximity Sensors
Update Rate	High-speed (Typically < 25ms)
Condition	100% Original & Brand New

Key Features & Operational Role

Safety-Critical Capability	Operational Benefit
SIL3 Certified Protection	Purpose-built for Emergency Shutdown (ESD) where high-speed response is life-critical.
TMR Reliability	Internal triple-voting ensures continuous operation even if one circuit path fails—no process interruption.
Versatile Pulse Sensing	Accurately tracks RPM and flow by capturing microsecond pulse trains with extreme precision.
Advanced Diagnostics	Constantly monitors field wiring and sensor health to eliminate costly "nuisance trips."
Online Hot-Swap	Replace modules while the system is online, ensuring zero downtime for your critical infrastructure.

Why Choose Us? (Your High-Availability Spares Partner)

Our Standard	Your Guaranteed Advantage
Live Video Unboxing	Visual confirmation of the Schneider factory seal and serial number via WhatsApp/Zoom before shipping.
Certified 100% New	In a SIS environment, refurbished is not an option. We only supply factory-new, verified safety hardware.
12-Month Warranty	Every PI3381 is backed by our full 1-year replacement warranty, securing your plant's uptime.
Logistics Mastery	Specialized anti-static packaging and expert customs clearance for Saudi Arabia, UAE, and Kazakhstan.

Triconex PI3381 4-Channel Pulse Input Module Connection Ports and Factory Label

Frequently Asked Questions (FAQ)

Q1: Can the PI3381 handle active and passive sensors?

A: Yes, the module interfaces with both passive magnetic pickups and active proximity probes. Configuration is managed via TriStation 1131 software.

Q2: What is the primary difference between this and a standard Digital Input?

A: A standard DI detects on/off states; the PI3381 tracks high-frequency pulses (up to 20kHz) to calculate speed and totalization with microsecond precision.

Q3: Is this module compatible with older Tricon systems?

A: It is used in Tricon and Trident systems. We recommend verifying your chassis and TriStation version for specific firmware compatibility.

Q4: How fast is delivery to a refinery in Jubail or Almaty?

A: We maintain ready-to-ship stock. Express air freight (DHL/FedEx) typically reaches major industrial hubs in 3–5 business days.

Request a Professional Quote Today

Is your turbine overspeed protection loop due for an upgrade? Ensure SIL3 reliability with the TRICONEX PI3381. Contact Xiamen Xiongba E-commerce Co., Ltd. today for actual stock photos, technical datasheets, and a competitive quote.