Yokogawa NFAI135-S51 Analog Input Module

The Yokogawa NFAI135-S51 is an advanced Analog Input Module, engineered to handle 4 to 20 mA signals with isolated channels. This module ensures precise, reliable input/output performance, making it ideal for a range of industrial automation applications. Furthermore, its isolated channels safeguard system integrity by preventing interference between signals.

Key Features:

• Model: NFAI135
• Number of Channels: 8 input channels, all isolated
• Input Signal: 4 to 20 mA (current input)
• Allowable Input Current: Up to 25 mA
• Accuracy: ±0.1% of full scale
• Data Refresh Cycle: 10 ms
• Step Response Time:
  • Input: 100 ms
  • Output: Not applicable
• Withstanding Voltage:
  • Between input/output and system: 500 V AC for 1 minute
  • Between channels: 500 V AC for 1 minute
• Power Supply: 20.2 to 29.3 V DC for the transmitter
• Temperature Drift: Max. ±0.01%/°C
• Maximum Current Consumption:
  • 360 mA (5 V DC)
  • 450 mA (24 V DC)
• HART Communication: Available for advanced configuration and diagnostics

Additional Features:

• Overcurrent Protection: The module incorporates a built-in overcurrent protection circuit to prevent damage.
• Input Resistance:
  • Power ON: 250 Ω
  • Power OFF: ≥500 kΩ
• External Connections: Connect using pressure clamp terminals or MIL connector cables.
• Weight: 0.3 kg
• Fallback Function:
  • HOLD: Maintains output when fallback is detected.
  • SETV: Outputs a specified value when fallback is detected.
  • Fallback detection time: 4 seconds

• Usage Notes:
  • HART Communication: Supports bidirectional communication with field devices for easy configuration and troubleshooting. See the GS 34P02Q53-01E manual for detailed HART specifications.
  • Power Supply: A 24 V DC analog field power supply is required for proper module operation.
  • Zener Barriers: Do not use Zener barriers. Use an isolation barrier for intrinsically safe applications to avoid electrical hazards.

---

Models and Suffix Codes

• Model: NFAI135 (Analog Input Module, 8 channels, isolated)
• Suffix Codes:
  • -S: Standard type
  • 5: No explosion protection
  • 1: With ISA Standard G3 option

---

About Us

  Meloauto – Your Trusted Supplier for Original, Brand-New PLC and DCS Parts Meloauto offer a vast selection of products from globally recognized brands, including Allen Bradley, Bently Nevada, Honeywell, ABB, GE Fanuc, Siemens, Invensys Triconex, ICS Triplex, Foxboro, Yokogawa, Schneider, and Hima, among others. With tens of thousands of new parts ready to ship, Meloauto has successfully served customers across over 50 countries worldwide. We focus on supplying discontinued and hard-to-find items, ensuring each product is in brand-new, original condition.

Contact Us

• Phone: +86-15915488782
• Email: [email protected]
• WhatsApp: +8615915488782
• Business Hours: 24/7 service
• Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China

Let us help you find the automation parts you need with reliable quality and dedicated support!