Triconex DI3311 | Industrial Safety Digital Input Module

Product Description

Overview

The Triconex DI3311 is a high-integrity digital input module designed to interface discrete field devices with the Triconex Safety Instrumented System (SIS).
It converts signals from push buttons, limit switches, contact closures, and indicators into logic inputs for the controller.
Built on Triple Modular Redundancy (TMR) architecture, the DI3311 ensures fault tolerance, uninterrupted operation, and SIL 3 compliance.
Moreover, it is engineered for demanding industrial environments, offering reliability in oil & gas, chemical, petrochemical, and power generation applications.

Technical Specifications

• Product Type: Digital Input Module (DI)

• Model Number: DI3311

• Manufacturer: Schneider Electric (Triconex brand)

• System Compatibility: Triconex SIS (Tricon series controllers)

• Architecture: Triple Modular Redundancy (TMR)

• Number of Channels: 32 isolated digital input channels

• Input Signal Types: Dry contact and 24 VDC logic inputs

• Input Voltage Range: 18–32 VDC typical

• Input Current: ~8 mA per channel (typical)

• Isolation: Channel-to-channel and channel-to-system isolation

• Diagnostics: Built-in self-diagnostics, channel status LEDs, redundancy monitoring

• Safety Integrity Level: SIL 3 compliant

• Certifications: UL, CE, ATEX, IECEx

• Operating Temperature: –20 °C to +60 °C

• Storage Temperature: –40 °C to +85 °C

• Humidity Range: 5–95% RH (non-condensing)

• Dimensions (H × W × D): 187 × 114 × 25 mm

• Weight: 1.2 kg

FAQ

Q1: What types of input signals does the DI3311 support?
The module supports dry contact and 24 VDC logic signals for flexible installation.

Q2: Is DI3311 suitable for safety-critical environments?
Yes, it is SIL 3 certified and built with TMR for fault-tolerant operation.

Q3: How many input channels are available?
The DI3311 offers 32 isolated digital input channels for high integrity monitoring.

Q4: What industries typically use DI3311?
It is widely deployed in oil & gas, petrochemical, chemical, and power generation industries.

Q5: Does the module offer diagnostics features?
Yes, it includes channel LEDs and built-in self-diagnostics for real-time monitoring.