YOKOGAWA NFAP135-S50

YOKOGAWA NFAP135-S50

The YOKOGAWA NFAP135-S50 is a high-performance 8-channel isolated pulse input module, designed for the STARDOM FCN-500 platform and CENTUM series DCS. It precisely captures contact, voltage, and current pulse signals, delivering reliable data acquisition for flow meters, encoders, and tachometers in process automation, energy, and manufacturing sectors.

Key Technical Specifications

• Model: YOKOGAWA NFAP135-S50
• Module Type: Isolated pulse input module
• Channel Configuration: 8 isolated channels (channel-to-channel & channel-to-system isolation)
• Input Signal Types: Contact ON/OFF, voltage pulse, current pulse (2-wire/3-wire compatible)web-material3.yokogawa.com
• Input Frequency Range: 0.1 Hz to 10 kHz
• Input Voltage: 0–24 V DC; 5–24 V DC (high-level)web-material3.yokogawa.com
• Pulse Width: 40 μs (high-speed signal capture)web-material3.yokogawa.com
• Input Impedance: Approx. 5.1 kΩ
• Isolation Strength: 500 V AC for 1 minute (input-to-system & channel-to-channel)web-material3.yokogawa.com
• Current Consumption: 300 mA (5 V DC)
• Limiter Current: 40 mA (12 V DC ±10%); 30 mA (24 V DC ±10%)
• Operating Temperature: 0°C to +55°C
• Storage Temperature: -20°C to +70°C
• Dimensions (W×H×D): 32.8 × 107.5 × 130 mm
• Weight: 0.3 kg
• Diagnostics: Channel-level open/short detection, line integrity monitoring
• Certifications: CE, IEC 61508 (SIL3 capable)

Core Advantages

Robust Isolation & Noise Immunity: The NFAP135-S50 features 500 V AC isolation between channels and the system, eliminating crosstalk and ensuring stable operation in high-interference environments like power plants and chemical facilitiesweb-material3.yokogawa.com.

High-Precision Signal Acquisition: With a 40 μs minimum pulse width and 10 kHz frequency range, it accurately captures high-speed pulse data. The ±0.1% measurement accuracy guarantees reliable monitoring of flow, speed, and position parametersweb-material3.yokogawa.com.

Flexible & Durable Design: Compatible with STARDOM FCN-500 and CENTUM DCS, it supports pressure clamp terminals and MIL cable connections for easy installation. The compact, lightweight design optimizes cabinet space, while industrial-grade components ensure long-term durability.