TheTRICONEX 3511is a high-performance Pulse Input (PI) Module designed for Triple Modular Redundant (TMR) safety systems.It is engineered to provide precise frequency and RPM measurements for rotating equipment such as turbines, compressors, and motors.By sensing voltage transitions from non-amplified magnetic speed sensors, the module converts pulse counts into high-resolution data that is transmitted to the Main Processors for critical speed control and overspeed protection logic.
Specifications
Input Signals:8 non-commoned pulse input points.
Resolution:16-bit pulse count measured to 1 microsecond resolution.
Accuracy:±0.01% at frequencies from 1,000 Hz to 20,000 Hz.
Frequency Range:Supports a wide spectrum from20 Hz to 20,000 Hz.
Input Voltage:Detects signals ranging from 1.5 V to 200 V peak-to-peak.
Input Impedance:Greater than 8 kΩ (typically 20 kΩ).
Update Rate:Typically25 milliseconds for rapid process response.
Overrange Protection:Continuous protection up to ±150 VDC.
Features
Triple Modular Redundancy:Features three isolated input channels that independently process field data, allowing the system to perform 2-out-of-3 (2oo3) voting for maximum integrity.
Magnetic Sensor Optimization:Specifically designed to interface withnon-amplified magnetic transducers, common in high-speed rotating machinery.
Hot-Spare Support:Includes Hot-Spare capability, allowing an standby module to take over immediately if the primary module experiences a fault.
Extensive Diagnostics:Performs continuous ongoing self-testson each channel; the "Fault" indicator alerts operators to channel issues without causing a module-wide failure.
Inductive Load Handling:Utilizes AC-coupled, balanced differential inputs to effectively filter out electrical noise and interference in industrial environments.
Simplified Integration:Provides automatic frequency and RPM conversion, reducing the computational load on the system's Main Processors.
