The Triconex 3511 is a pulse input module mainly used for processing pulse signals in Safety Instrumented Systems (SIS). The following is its detailed description:
- High-Sensitivity High-Frequency Input: Provides 8 high-sensitivity, high-frequency input channels, optimized specifically for use with non-amplified magnetic speed sensors commonly found on rotating equipment such as turbines or compressors.
- Signal Processing and Measurement: The module can sense voltage transitions from magnetic sensor input devices and accumulate them within a selected time window (rate measurement). The resulting counts are used to generate frequency or rotational speed, which is transmitted to the main processor, with a pulse counting resolution of up to 1 microsecond.
- Multi-Waveform Support: Supports various waveforms such as sine, square, and pulse, with a duty cycle range of 10%-90% and a frequency range of 20Hz-20000Hz.
- Input Characteristics: AC-coupled, balanced differential input; input resistance (load) greater than 8kΩ, typical value 20kΩ; common-mode range of -100VDC to +100VDC peak-to-peak; normal-mode range of 1.5V to 200V peak-to-peak; with ±150VDC continuous overvoltage protection; typical hysteresis voltage of 150mV.
- Resolution and Accuracy: 16-bit resolution; accuracy of ±0.01% within the frequency range of 1000Hz to 20000Hz.
- Update Rate: Typical value of 25ms.
- Dimensions and Weight: Approximately 16cm x 16cm x 12cm, weighing about 1.5kg.
- Operating Temperature: -40°C to +70°C.
- Redundant Design: Adopts Triple Modular Redundancy (TMR) architecture to improve system reliability and safety.
Widely used in industries such as petrochemical, electric power, manufacturing, and water treatment. It can be applied to scenarios such as rotational speed measurement of turbines and compressors, generator frequency measurement, speed and position measurement in production processes, and rotational speed monitoring of pumps.
