Overview
The YOKOGAWA NFAF135-S00 Frequency Input Module is designed for industrial automation applications that require precise frequency measurement. It offers isolated channels for high-noise environments and a wide frequency measurement range, making it suitable for various process control tasks.
Technical Specifications
General
- Number of Input Channels: 8, isolated channels
- Input Signal: Contact ON/OFF, voltage pulse (rectangular wave)
- Input Frequency: 0.1 Hz to 10 kHz
- Frequency Accuracy: 0.1% of reading
Withstanding Voltage
- Between input and system: 500 V AC for 1 minute
- Between channels: 500 V AC for 1 minute
Minimum Input Pulse Width
- 40 μs
Input Signal Level
-
Contact Input:
- Open: 100 kΩ or more
- Close: 200 Ω or less
-
Voltage Pulse Input:
- VH-VL (swing value): 3 V or more
- VH (high level): 3 to 24 V DC
- VL (low level): -1 to 8 V DC
Signal Source Resistance
- 1 kΩ or less
Shunt Resistance
- Select from OFF/1000 Ω (Open when power is OFF)
Pull-up Resistance
- 68 kΩ (12 V DC or 24 V DC)
Data Refresh Cycle
- 10 ms
Field 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
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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