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Product Overview: TRICONEX 3503E
The TRICONEX 3503E is a high-reliability relay output module designed for safety-critical industrial automation systems. It is a core component of TRICONEX’s Tricon and Trident safety instrumented system (SIS) platforms. The TRICONEX 3503E functions as a critical interface between safety controllers and field devices requiring high-power actuation, such as emergency shutdown valves, fire suppression system actuators, and isolation relays.
Its primary role is to convert low-voltage control signals from the SIS controller into high-power relay outputs. This ensures reliable operation of safety-critical equipment in environments where failure could lead to catastrophic consequences. The TRICONEX 3503E integrates TRICONEX’s triple modular redundancy (TMR) architecture. This architecture processes each output signal through three independent channels. It uses a 2-out-of-3 voting mechanism to eliminate single points of failure.
The TRICONEX 3503E is engineered to operate in harsh industrial conditions. It combines rugged construction with advanced diagnostic features. This makes it indispensable in industries such as oil and gas, chemical processing, and nuclear power generation. These industries demand uncompromising safety and operational continuity.
Technical Specifications
| Parameter | Value |
|---|---|
| Product model | TRICONEX 3503E |
| Manufacturer | TRICONEX |
| Product type | Relay output module |
| Physical dimensions | 102 mm (height) × 152 mm (width) × 51 mm (depth) |
| Weight | 0.85 kg |
| Electrical specifications | 24 V DC operating voltage; 1.5 A maximum current per relay |
| Output channels | 8 isolated relay outputs |
| Relay rating | 5 A @ 250 V AC / 30 V DC (resistive load) |
| Isolation | 2500 V DC channel-to-bus and channel-to-channel isolation |
| Working environment | Operating temperature: -40°C to 70°C; Relative humidity: 5%–95% (non-condensing) |
| Certifications | SIL 3 compliant (IEC 61508); ATEX/IECEx certified (Zone 1/2); UL 508 listed |
| Installation requirements | 19-inch rack mount; DIN rail compatible; vibration resistance up to 5 g (10–2000 Hz) |
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Related Products
- TRICONEX 3301S2: A digital input module that works with the TRICONEX 3503E to form a complete safety loop. It captures discrete signals from sensors (e.g., pressure switches) and sends them to the controller, which then triggers outputs via the TRICONEX 3503E.
- TRICONEX MP 3101: The main processor module of TRICONEX SIS. It executes safety logic and sends control commands to the TRICONEX 3503E to actuate field devices during abnormal conditions.
- TRICONEX 3211: A communication interface module that enables the TRICONEX 3503E to transmit diagnostic data to SCADA systems or cloud platforms, supporting remote monitoring of relay status.
- TRICONEX 4400: A redundant power supply module that provides stable 24 V DC power to the TRICONEX 3503E, preventing relay misoperation due to voltage fluctuations.
- TRICONEX 3503: The predecessor of the TRICONEX 3503E. It lacks the enhanced diagnostic features and extended temperature range of the TRICONEX 3503E.
- TRICONEX 3604E: A high-density relay output module with 16 channels. It is suitable for large-scale systems where the TRICONEX 3503E’s 8 channels are insufficient.
Main features and advantages
Triple Modular Redundancy (TMR) Architecture: The TRICONEX 3503E processes each output signal through three independent channels. A 2-out-of-3 voting mechanism ensures that only consistent signals are sent to field devices. This design eliminates single-point failures. It guarantees continuous operation even if one channel malfunctions. This is critical for applications like offshore oil platform emergency shutdown systems, where downtime can lead to environmental disasters or financial losses.
Enhanced Relay Reliability: Each relay in the TRICONEX 3503E is rated for 100,000 operations. It can switch up to 5 A at 250 V AC, making it suitable for both low-power solenoids and high-power motorized valves. The relays are hermetically sealed. This protects them from dust and moisture. It extends their lifespan in harsh environments such as chemical plant processing areas.
Advanced Diagnostics: The TRICONEX 3503E includes real-time monitoring of relay contacts, coil integrity, and power supply status. Faults (e.g., welded contacts or open coils) are detected within 10 ms. They are reported to the SIS controller via internal communication buses. This allows maintenance teams to address issues before they affect system safety. LED indicators on the module provide at-a-glance status checks, simplifying on-site troubleshooting.
Hot-Swap Capability: Technicians can replace the TRICONEX 3503E without powering down the SIS. This minimizes maintenance downtime. This feature is especially valuable in continuous-process industries like pharmaceuticals. In these industries, production halts can result in batch losses worth thousands of dollars.
Safety Certifications: The TRICONEX 3503E is certified to SIL 3 (IEC 61508) and ATEX/IECEx for Zone 1/2 hazardous areas. It ensures compliance with global safety standards. This certification is essential for industries handling flammable or toxic materials, where equipment failure could cause explosions or chemical leaks.
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Installation and maintenance
Pre-installation preparations: Before installing the TRICONEX 3503E, verify that the SIS controller’s firmware is compatible with the module. Check the module for physical damage, such as bent pins or cracked casing. Ensure the 19-inch rack or DIN rail is securely mounted and level. This prevents vibration-induced stress on the module’s connectors. Connect the 24 V DC power supply and confirm voltage stability (±10% tolerance) to avoid damage to the relay coils. Label all output wiring according to the system schematic to ensure correct connection to field devices.
Maintenance suggestions: Clean the TRICONEX 3503E’s ventilation slots monthly using compressed air. This prevents dust buildup and overheating. Perform quarterly diagnostic tests via TriStation software. Check relay operation and contact resistance. Replace relays if contact resistance exceeds 100 mΩ, as this indicates wear. Update the module’s firmware annually to access bug fixes and improved diagnostic algorithms. If the module reports a persistent fault (e.g., unresponsive relay), use the hot-swap feature to replace it. This ensures minimal disruption to system operation.
Application fields
The TRICONEX 3503E is widely used in industries where safety and reliability are paramount. In oil and gas refineries, it controls emergency shutdown (ESD) valves. It closes these valves when gas detectors detect leaks, preventing explosions. Its TMR architecture ensures the valves actuate even if one channel fails, a critical safeguard in remote pipeline stations.
In chemical processing plants, the TRICONEX 3503E triggers fire suppression systems. It does this when heat detectors sense abnormal temperatures. Its hermetically sealed relays resist corrosion from chemical fumes. This ensures reliable operation in aggressive environments.
In nuclear power facilities, the module controls isolation valves in coolant systems. It maintains pressure and prevents radiation leaks. Its SIL 3 certification meets the strict safety requirements of nuclear regulatory bodies.
In pharmaceutical manufacturing, the TRICONEX 3503E manages cleanroom isolation systems. It shuts down ventilation fans if particulate levels exceed limits. This prevents contamination of drug batches. Its hot-swap capability allows maintenance without halting production, supporting continuous manufacturing goals.
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Product guarantee
Our company offers a one-year quality warranty service for the TRICONEX 3503E, covering hardware malfunctions not caused by human factors. During the warranty period, if the TRICONEX 3503E shows abnormal performance or functional failure, we will provide replacement services. As a leading import and export trade distribution company with 17 years of experience, we maintain a large inventory of TRICONEX 3503E and other industrial control parts, including unpopular and discontinued models. Our global supply chain network enables us to quickly respond to urgent procurement needs, ensuring the continuous and stable operation of your industrial systems.
Whatsapp:+86 18859254943
E-mail :sales@ygplc.com
E-mail :sales@ygplc.com
