Description

3 SEO Product Titles

• Yokogawa NFAP135-S00 S2 8-Channel Isolated Pulse Input Module
• NFAP135-S00 S2 Yokogawa Frequency Measurement Module for DCS
• Yokogawa NFAP135-S00 S2 High-Speed Pulse Input Card

Product Overview

The Yokogawa NFAP135-S00 S2 is a high-performance, 8-channel isolated pulse input module engineered for precise frequency measurement and pulse accumulation. It serves as a critical interface for translating high-speed signals from field sensors into accurate data for Distributed Control Systems (DCS).

Precision Frequency Acquisition

The NFAP135-S00 S2 excels in high-speed environments, supporting an extensive input frequency range from 0 to 10 kHz. Because it can detect pulses as narrow as 40 μs, this module accurately captures data from fast-moving machinery and high-resolution flow meters. The isolated channel architecture provides a significant advantage by eliminating common-mode noise and preventing ground loop interference. Consequently, the module maintains signal integrity even when deployed in electrically noisy industrial settings.

Configurable Signal Conditioning

Engineers can customize the module to match specific sensor requirements through selectable electrical parameters. The NFAP135-S00 S2 offers adjustable shunt resistance (OFF, 200, 500, or 1000 Ω) and dual pull-up voltage levels of 12V or 24V DC. Additionally, the integrated 68kΩ pull-up resistor and programmable software filters work together to suppress signal chattering. These features ensure that the controller receives stable, debounced readings from rotary encoders, turbine meters, and production counters.

Real-Time Performance and Integration

This module prioritizes responsiveness with an ultra-fast 2ms data refresh cycle, which is essential for real-time turbine monitoring and manufacturing throughput tracking. To simplify field wiring, the unit provides a flexible transmitter power supply, allowing it to power various 12V or 24V DC sensors directly. Its compact form factor optimizes rail space, while the “S2” enhanced design ensures long-term durability in process industries where operational continuity is non-negotiable.

Technical Characteristics