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Product Overview
The TRICONEX 3401 is a digital output module designed to play a key role in safety instrumented systems (SIS) within industrial automation. Its core function is to convert digital signals from a central controller into physical actions, such as opening or closing valves, activating alarms, or starting/stopping pumps. This makes the TRICONEX 3401 essential in safety-critical setups where precise control of field devices can prevent accidents or minimize their impact.
As part of TRICONEX’s family of I/O modules, the 3401 is built to integrate seamlessly with TRICONEX Tricon and TriconEX systems, which use triple modular redundancy (TMR) to ensure reliability. In these systems, three independent channels work in parallel, cross-checking each other to eliminate errors. The TRICONEX 3401 fits into this architecture, ensuring that output signals are accurate and consistent, even in harsh industrial environments. Whether in a refinery or a power plant, this module helps keep operations safe and efficient by ensuring that critical devices respond correctly when needed most.
Technical Specifications
| Product model | 3401 |
|---|---|
| Manufacturer | TRICONEX |
| Product type | Digital Output Module |
| Input voltage | 24V DC ±10% |
| Output current per channel | 3A |
| Number of channels | 16 isolated channels |
| Electrical isolation | 2500Vrms between channels and system ground |
| Physical dimensions | 135mm (W) x 165mm (H) x 215mm (D) |
| Weight | 1.2 kg |
| Interface type | Screw terminal block |
| Working environment | Operating temperature: -40°C to +70°C; Relative humidity: 5% to 95% (non-condensing) |
| Place of origin | United States |
| Safety compliance | SIL 3 (IEC 61508), ISA S84.01 |
3401
Related products
- TRICONEX 3311S2: A digital input module that pairs with 3401 to form a complete control loop. While 3401 sends output signals to actuate devices, 3311S2 collects input signals from sensors, providing the data needed for the controller to decide when to act.
- TRICONEX 4351B: The main processor module in TRICONEX Tricon systems. It generates the digital signals that 3401 converts into actions, ensuring the module operates according to preprogrammed safety logic.
- TRICONEX 8312: A redundant power supply module that delivers stable 24V DC to 3401. This ensures the module continues working even if the primary power source fails, critical for uninterrupted safety operations.
- TRICONEX 3403E: A higher-voltage digital output module (125V DC) that can replace 3401 in applications requiring more power to operate larger field devices, such as heavy-duty industrial valves.
- TRICONEX 9662-810: A communication module that shares data about 3401’s status (e.g., which channels are active) with external systems like SCADA, allowing operators to monitor device actions remotely.
- TRICONEX 2401H: A digital output module with 2A per channel output, serving as a lower-current alternative to 3401 for applications with smaller field devices like light alarms or small relays.
Main features and advantages
Reliable power delivery: The TRICONEX 3401 provides 3A of current per channel, enough to operate a range of field devices, from solenoid valves in chemical plants to emergency shutdown relays in oil refineries. Its 2500Vrms electrical isolation between channels and system ground blocks electrical noise and surges, preventing false activations or failures caused by interference.
Safety through redundancy: Designed for TRICONEX’s TMR systems, the 3401 works with three parallel channels that check each other’s outputs. A signal from the controller only triggers an action in 3401 if at least two of the three channels agree it is correct. This redundancy eliminates single points of failure, helping systems meet SIL 3 safety standards.
Fast response times: The module can actuate a device within milliseconds of receiving a signal from the controller. This speed is critical in emergencies—for example, if a gas leak is detected, the 3401 can close a shutoff valve quickly to limit the leak’s spread.
Easy to install and maintain: The 3401 uses a screw terminal block for wiring, making it simple to connect to field devices without special tools. It also has status lights for each channel, showing whether a device is active or if there’s a fault. This allows maintenance teams to quickly identify issues, such as a loose wire or a failed device, reducing downtime.
Durable design: Built to withstand tough industrial conditions, the 3401 operates in temperatures from -40°C to +70°C and resists humidity. This durability ensures it works reliably in extreme environments, from freezing offshore rigs to hot power plant control rooms.
3401
Installation and maintenance
Pre-installation preparations: Before installing 3401, confirm it is compatible with the target TRICONEX chassis (e.g., TriconEX main racks). Check that the input voltage matches the 24V DC requirement. Ensure the mounting area has enough space for wiring and airflow to prevent overheating. Turn off the system power and disconnect all field device wires to avoid electrical shock. Inspect the module’s terminal block for damage, such as bent pins, before inserting it into the chassis.
Maintenance suggestions: For 3401, check the terminal block connections every three months to ensure they are tight and free of corrosion—loose connections can cause devices to act erratically. Use a multimeter to verify that output voltage stays within the 24V DC ±10% range. Clean dust from the module’s surface and ventilation slots regularly to prevent overheating. Monitor the status lights: a red light for a channel indicates a fault, such as a short circuit, which needs immediate attention. In systems with two 3401 modules (for redundancy), test the failover function once a year to ensure the backup module takes over smoothly if the primary one fails.
Application fields
The TRICONEX 3401 is widely used in industries where safety and control of field devices are critical. In oil and gas facilities, it actuates emergency shutdown valves (ESV) on pipelines and offshore platforms. If a pressure sensor detects a dangerous spike, the controller sends a signal to 3401, which closes the ESV to stop the flow of oil or gas, preventing explosions or leaks.
In chemical processing plants, the 3401 controls valves that regulate the flow of raw materials into reactors. It ensures these valves open or close at precise times to keep reactions within safe temperature and pressure limits, avoiding spills or toxic releases.
In power generation facilities, the module operates relays that disconnect generators from the grid during overloads or faults. By acting quickly, the 3401 helps prevent damage to expensive turbine equipment and reduces the risk of power outages.
In pharmaceutical manufacturing, it controls small pumps that deliver precise amounts of ingredients, ensuring batch consistency and compliance with strict regulatory standards. In all these fields, the TRICONEX 3401 acts as a trusted link between the controller and field devices, ensuring that safety and efficiency are never compromised.
3401
Product guarantee
Our company offers a one-year quality warranty service for 3401, covering hardware malfunctions not caused by human factors. During the warranty period, if the product shows abnormal performance or functional failure, we will provide replacement services. In addition, for discontinued models or urgent demands, relying on our global supply chain network, we can quickly respond to customers’ procurement needs for scarce spare parts, and provide reliable services to support the continuous and stable operation of industrial systems. Our company is a leading enterprise in the industrial control industry, established in 2007, with 17 years of experience. We are an import and export trade distribution company, mainly selling major brands of industrial control parts, with many unpopular discontinued models and a large stock. Our company has the advantage of supply channels, with a large number of spot items to meet the needs of customers anxious to find spare parts.
Whatsapp:+86 18859254943
E-mail :sales@ygplc.com
E-mail :sales@ygplc.com
