Overview

The Yokogawa NFAP135-S50 is an isolated input module designed for various industrial applications. It supports multiple input signal types, making it versatile for a wide range of monitoring and control tasks.

Technical Specifications

• Number of Input Channels: 8, isolated channels

• Input Signal Types:

  • 2-wire type: Contact ON/OFF, voltage pulse, current pulse (can supply transmitter power)
  • 3-wire type: Power-supply-type voltage pulse

• Input Frequency: 0 to 10 kHz

• Withstanding Voltage:

  • 500 V AC for 1 minute (between input and system)
  • 500 V AC for 1 minute (between channels)

• Minimum Input Pulse Width: 40 μs

• Input Signal Levels:

  • Contact Input:
    • Open/close levels of relay contact and transistor contact
    • Open: 100 kΩ or more
    • Close: 200 Ω or less
  • Contact Capacity:
    • When supplying 12 V DC: 15 V DC, 15 mA or more
    • When supplying 24 V DC: 30 V DC, 30 mA or more
  • Voltage/Current Pulse Input (Current input is converted to voltage):
    • VH-VL (Voltage Swing): 3 V or greater
    • VH (High Level): 3 to 24 V
    • VL (Low Level): -1 to 8 V
  • Signal Source Resistance: 1 kΩ or less
  • Shunt Resistance: Select from OFF/200/500/1000 Ω (open when power is OFF)
  • Pull-up Resistance: 68 kΩ (12 V DC or 24 V DC)

• Data Refresh Cycle: 2 ms

• Filter Function: Can select a filter that eliminates chattering

• Transmitter Power Supply: Can select 24 V DC/12 V DC

• Limiter Value:

  • 12 V DC ±10%: 40 mA
  • 24 V DC ±10%: 30 mA

• Maximum Current Consumption:

  • 300 mA (5 V DC)
  • 400 mA (24 V DC)

• Weight: 0.3 kg

• External Connection: Pressure clamp terminal, MIL connector cable