TRICONEX 3703E Safety Programmable Logic Controller

CPU Type: 32-bit RISC processor.

Memory Capacity: 256KB.

I/O Points: 16 digital input/output points.

Communication Interfaces: RS232, RS485, CAN bus.

Power Supply Voltage: 24VDC.

Operating Temperature Range: -20°C to +70°C.

Operating Humidity: 0% to 95% (non-condensing).

Installation Method: DIN rail mounting.

Dimensions: 90mm x 70mm x 25mm.

Weight: 0.3kg.

Triple Independent Channels: Each controller contains three completely independent CPU channels (A, B, C) that process the same control logic in parallel, ensuring output consistency through a 2oo3 (two-out-of-three) voting mechanism.

A single point of failure does not affect system operation, and the module supports hot-swap replacement, achieving true fault tolerance.

Fail-Safe Mechanism: When inconsistencies between channels or internal faults are detected, the system automatically switches to a safe state (such as emergency shutdown) to avoid dangerous working conditions.

SIL 3 Certification: Complies with IEC 61508 and ISA S84.01 standards, suitable for applications with the highest safety integrity level, with a failure rate as low as 10⁻⁹ per hour.

Redundant Power Supply and Communication: Supports dual redundant power input and redundant communication interfaces (such as FTE, Modbus TCP) to ensure data transmission is not affected when communication links fail.

High-Speed CPU: Adopts a dedicated safety processor (such as Motorola PowerPC) with an execution cycle as short as 1ms, meeting the requirements of fast-response safety control.

Large-Capacity Memory: Supports more than 256KB of program memory, which can store complex safety logic and historical data.

Deterministic Execution: Based on a hardware-based real-time operating system (RTOS), ensuring the predictability of instruction execution time and avoiding jitter.

Digital I/O: Integrates 16 digital input/output points, supporting dry contacts, wet contacts, or solid-state outputs, and can directly drive actuators such as solenoid valves and relays.

Analog I/O: Optional analog input/output modules are available, supporting standard signals such as 4-20mA and 0-10V, for continuous quantity monitoring of temperature, pressure, etc.

Communication Protocols: Built-in RS232/485, CAN bus, and Ethernet interfaces, supporting industrial protocols such as Modbus, Profibus, and HART, facilitating integration with third-party systems.

Online Self-Diagnosis: Real-time monitoring of hardware status such as CPU, memory, power supply, and communication links, triggering sound and light alarms and recording event logs when faults occur.

I/O Loop Monitoring: Detects disconnection and short circuit of input signals, as well as abnormal current/voltage of output signals, providing accurate fault location.

Regular Self-Testing: Supports periodic redundant channel synchronization verification and functional testing to ensure continuous and reliable operation of the system.

Standard Programming Languages: Supports five programming languages specified in IEC 61131-3 (LD, FBD, ST, IL, SFC), compatible with mainstream PLC programming software.

Graphical Configuration Tools: Provides dedicated configuration software (such as Triconex Tools) for visual design of safety logic, supporting online program downloading and modification.

Fault Mode Customization: Configurable in "fail-safe" or "last state retention" modes to adapt to different process requirements.

Wide Temperature Operating Range: -20°C to +70°C (standard type), with optional extended temperature range (-40°C to +85°C) to adapt to extreme working conditions.

Vibration/Shock Resistance: Complies with IEC 60068-2 standards, resistant to mechanical vibration and shock in industrial environments.

Protection Rating: IP20 (module), up to IP65 when used with a cabinet, dustproof and waterproof, suitable for harsh industrial sites.

Safety Certifications: Certified by SIL 3, ATEX, IECEx, UL, etc., meeting global explosion-proof and safety regulatory requirements.

Industry Compliance: Complies with safety standards of specific industries such as petrochemical (API), nuclear power (10CFR50), and railway (EN50126).

Oil and Gas Industry: Can be used for safety interlocking, emergency shutdown, leak detection, and alarm, etc.

Chemical Industry: Mainly used for process control and safety monitoring, monitoring and controlling chemical reaction processes.

Power Industry: Suitable for protection of power plants and substations.

Nuclear Industry: Can be applied to safety-critical control systems for reactor protection, emergency shutdown, and plant monitoring.

Emergency Shutdown System (ESD): Quickly responds to abnormal process parameters and triggers equipment shutdown.

Burner Management System (BMS): Monitors the ignition and flameout logic of boilers and heating furnaces.

Fire and Gas Monitoring System (F&G): Links fire-fighting equipment and ventilation systems.

Nuclear Power Auxiliary System Control: Redundant control of non-nuclear safety loops.

Rail Transit Signal Interlocking: Critical logic control to ensure safe train operation.