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Product Overview
The TRICONEX DI3301S2 is a high-performance digital input module designed for safety instrumented systems (SIS) and critical industrial automation environments. As a key component of TRICONEX’s Tricon and Trident product lines, it specializes in receiving and processing discrete digital signals from field devices such as switches, sensors, and relays, converting them into data that safety controllers can use to make real-time decisions. This role makes the TRICONEX DI3301S2 essential for maintaining operational safety in settings where even small errors could lead to serious incidents.
Integrated with TRICONEX’s triple modular redundancy (TMR) architecture, the TRICONEX DI3301S2 ensures continuous operation even if one processing channel fails. Three independent channels work in parallel, with the module automatically isolating faults to prevent system downtime. It supports up to 16 isolated digital input channels, each protected against voltage spikes and electromagnetic interference—common issues in industrial settings.
The TRICONEX DI3301S2 is engineered to withstand extreme temperatures (-40°C to 70°C) and harsh conditions, making it suitable for oil refineries, chemical plants, and power generation facilities. Its compatibility with standard industrial protocols and TRICONEX’s TriStation software simplifies integration into both new systems and upgrades, reinforcing its value in maintaining the integrity of safety-critical processes. Whether monitoring emergency stop signals or pressure switch alerts, the TRICONEX DI3301S2 delivers reliable performance, ensuring critical data reaches controllers without delay.
Technical Specifications
| Parameter | Value |
|---|---|
| Product model | TRICONEX DI3301S2 |
| Manufacturer | TRICONEX |
| Product type | Digital input module |
| Physical dimensions | 165 mm (length) × 102 mm (width) × 55 mm (height) |
| Weight | 0.8 kg |
| Electrical specifications | 24 V DC operating voltage; 0.3 A maximum current consumption |
| Input channels | 16 isolated digital inputs |
| Interface type | Terminal block connections; compatible with TRICONEX standard racks |
| Communication protocol | Supports Modbus RTU; TRICONEX proprietary protocol |
| Working environment | Operating temperature: -40°C to 70°C; Relative humidity: 5%–95% (non-condensing) |
| Installation requirements | DIN rail or rack mounting; secure fixation to resist vibration |
| Isolation | Galvanic isolation (2.5 kV) between channels and system |
| Certifications | SIL 3 compliant (IEC 61508); ATEX/IECEx certified for Zone 1/2 hazardous areas |
DI3301S2
Related Products
- TRICONEX DI3300: A predecessor to the TRICONEX DI3301S2 with similar core functions but fewer isolation features. The TRICONEX DI3301S2 offers enhanced surge protection and compatibility with newer protocols.
- TRICONEX DO3301: A digital output module that works with the TRICONEX DI3301S2 to form a complete input-output loop. The TRICONEX DI3301S2 receives sensor signals, while the DO3301 sends control commands to actuators or valves.
- TRICONEX 4210: The central processor module of TRICONEX SIS. The TRICONEX DI3301S2 transmits processed input data to the 4210, which uses it to execute safety logic and trigger critical actions.
- TRICONEX 4400: A redundant power supply module that provides stable 24 V DC power to the TRICONEX DI3301S2, preventing operational interruptions during power fluctuations.
- TRICONEX 3211S2: A communication module that connects the TRICONEX DI3301S2 to higher-level systems (e.g., DCS, SCADA). It relays input data from the TRICONEX DI3301S2 to enable remote monitoring.
- TRICONEX 3700A: An analog input module that complements the TRICONEX DI3301S2 in hybrid systems. While the TRICONEX DI3301S2 handles discrete signals, the 3700A processes continuous analog data from sensors like thermocouples.
Main features and advantages
Triple modular redundancy (TMR) for uncompromising reliability: The TRICONEX DI3301S2 uses three independent processing channels to process signals simultaneously. If one channel fails, the other two continue operating, ensuring no loss of data or system downtime. This design meets SIL 3 safety standards, making the TRICONEX DI3301S2 ideal for applications where failure could lead to catastrophic consequences, such as emergency shutdown systems in oil refineries.
Isolated channels for signal integrity: Each of the TRICONEX DI3301S2’s 16 input channels features 2.5 kV galvanic isolation, preventing voltage spikes, ground loops, and electromagnetic interference from disrupting signals. This isolation ensures that critical inputs—like emergency stop commands or pressure switch alerts—are transmitted accurately to safety controllers, reducing the risk of false alarms or missed warnings.
Rugged design for harsh industrial environments: The TRICONEX DI3301S2 is built to withstand extreme conditions. It operates reliably in temperatures ranging from -40°C to 70°C, making it suitable for cold climates (e.g., Arctic pipelines) and hot settings (e.g., chemical reactors). It is also resistant to vibration and humidity, ensuring consistent performance in offshore platforms, mines, and coastal facilities.
Seamless integration and easy configuration: The TRICONEX DI3301S2 works seamlessly with TRICONEX’s TriStation configuration software, allowing users to set input thresholds, filtering, and response times to match specific application needs. It supports standard industrial protocols like Modbus RTU, enabling compatibility with third-party controllers and legacy systems. This flexibility simplifies both new installations and system upgrades.
Advanced diagnostic capabilities: The TRICONEX DI3301S2 includes built-in diagnostics that continuously monitor channel health, detecting faults such as open circuits or short circuits. Faults are isolated and flagged in real time, allowing maintenance teams to address issues proactively. This reduces mean time to repair (MTTR) and enhances overall system availability.
Installation and maintenance
Pre-installation preparations: Before installing the TRICONEX DI3301S2, power off the target system to avoid electrical damage. Verify that the system firmware is compatible with the module—outdated firmware may cause communication issues. Inspect the TRICONEX DI3301S2 for physical defects, such as bent pins or cracked casings, which could impair performance. Ensure the mounting area (DIN rail or rack) is clean, level, and securely fastened to resist vibration. Confirm that the 24 V DC power supply meets the module’s current requirements (0.3 A max) to prevent overloading.
Maintenance suggestions: Regular maintenance is critical to sustaining the TRICONEX DI3301S2’s performance. Conduct quarterly visual inspections to check for loose terminal connections, dust accumulation, or corrosion. Use compressed air to clean dust from vents, as buildup can cause overheating. Test signal transmission quarterly by sending test signals from connected devices and verifying that the TRICONEX DI3301S2 transmits them accurately to the controller. Update the module’s firmware annually using TriStation software to address bugs and improve compatibility with system upgrades. If faults are detected, refer to TRICONEX’s diagnostic guides to isolate issues; replace the module if necessary, using hot-swap capabilities to minimize downtime.
DI3301S2
Application fields
The TRICONEX DI3301S2 is widely used in industries where safety and reliability are critical. In the oil and gas sector, it monitors signals from pressure switches, flow meters, and emergency shutdown buttons in drilling rigs and pipelines. For example, if a pipeline pressure sensor detects a dangerous spike, the TRICONEX DI3301S2 processes this signal and sends it to the SIS, which triggers an emergency shutdown to prevent leaks or explosions.
In chemical processing plants, the TRICONEX DI3301S2 is part of fire and gas detection systems. It receives signals from gas detectors and heat sensors, passing them to the controller to activate sprinklers, vent valves, or isolation barriers. This rapid response protects workers and prevents the release of hazardous chemicals.
In power generation facilities—including fossil fuel, nuclear, and renewable plants—the TRICONEX DI3301S2 monitors turbine vibration, boiler pressure, and generator temperature sensors. It ensures that critical status signals are transmitted to the SIS, which can shut down equipment if readings exceed safe limits, preventing costly damage or power outages.
In pharmaceutical manufacturing, the TRICONEX DI3301S2 monitors cleanroom sensors (e.g., air pressure, door interlocks) to maintain sterile conditions. It ensures that any deviations from safe parameters are quickly detected and addressed, helping facilities comply with Good Manufacturing Practices (GMP) and regulatory standards.
Product guarantee
Our company, a leading import and export trade distribution company established in 2007 with 17 years of experience, offers a one-year quality warranty service for the TRICONEX DI3301S2, covering hardware malfunctions not caused by human factors. During the warranty period, if the TRICONEX DI3301S2 shows abnormal performance or functional failure, we will provide replacement services. We specialize in selling major brands of industrial control parts, including many unpopular and discontinued models, with a large stock available. Our supply channels allow us to meet the urgent needs of customers anxious to find spare parts. In addition to warranty support, we provide technical assistance for installation and troubleshooting, ensuring the TRICONEX DI3301S2 integrates smoothly into your systems. Relying on our global supply chain network, we can quickly respond to procurement needs for scarce spare parts, supporting the continuous and stable operation of your industrial systems.
Whatsapp:+86 18859254943
E-mail :sales@ygplc.com
E-mail :sales@ygplc.com
