1 3

Yokogawa NFAI135-S50 Isolated Analog Input Module

Yokogawa NFAI135-S50 Isolated Analog Input Module

Configured for high-density signal acquisition in STARDOM FCN/FCJ autonomous controller platforms, the Yokogawa NFAI135-S50 (NFAI135 Analog Input Module) provides direct electrical execution for 8-channel analog current loops. This module facilitates...

20 people are viewing this right now

Availability: Low stock: 50 left

SKU: NFAI135-S50
Vendor: Yokogawa
Category: Isolated Analog Input Module
Related Series:

Shipping & Returns

Reliable Worldwide Delivery

  • Carriers: Shipped via DHL, FedEx, UPS, or USPS.
  • Dispatch: Orders processed in 1-2 business days and dispatched within 3-5 business days.
  • Tracking: Full tracking details provided via email upon shipment.

30-Day Money-Back Guarantee

  • Guarantee: 30-day return window for in-stock, factory-sealed products.
  • Condition: Items must be unopened, unused, and in original packaging.
  • Authenticity: We guarantee 100% original and authentic hardware.

Need more details? Read our fullShipping PolicyandRefund Policy.

Authenticity & Warranty

  • Genuine Guarantee: We supply only 100% original, brand-new, and factory-sealed industrial automation parts.
  • Full Coverage: Every component is backed by a 12-month comprehensive warranty from the date of purchase.
  • Traceability: All products come with original factory documentation and accessories for full industrial compliance.

Technical Support & Sourcing

  • Expert Assistance: Our technical team provides free consultation to help you verify compatibility for DCS and PLC systems.
  • Rare Part Sourcing: Specializing in obsolete and hard-to-find components from Allen-Bradley, Siemens, ABB, HIMA, and more.
  • Bulk Inquiries: Contact us at pambo@5gplc.com for volume pricing or customized project quotes.
View full product details

Configured for high-density signal acquisition in STARDOM FCN/FCJ autonomous controller platforms, the Yokogawa NFAI135-S50 (NFAI135 Analog Input Module) provides direct electrical execution for 8-channel analog current loops. This module facilitates precise conversion of 4-20 mA inputs while maintaining galvanic integrity between signal channels and the internal system backplane to prevent common-mode noise propagation.

Suffix Breakdown & Model Matrix

Suffix Code Specification
NFAI135 Base Analog Input Module (8-channel)
-S50 Standard version with specific wiring interface
/CCC01 Included MIL connector cable with protective cover

Hardware Specifications

Parameter Specification
Model NFAI135-S50
Brand Yokogawa
Origin Japan
Weight 0.3 kg
Dimensions Standard FCN/FCJ module form factor
Operating Temp -10 deg C to +60 deg C
Power Consumption 360 mA (5 V DC), 450 mA (24 V DC)
Input Channels 8 (individually isolated)
Input Signal 4-20 mA
Accuracy +/- 0.1% of full scale
Data Refresh 10 ms

DCS Instrumentation and Channel Isolation

The NFAI135-S50 utilizes galvanic isolation to provide a 500 V AC withstand voltage rating between individual channels and between channels and the system bus. This architecture effectively suppresses ground loops in large-scale installations. The module supports loop-powered transmitters, delivering a supply voltage of 20.2 to 29.3 V DC with a current limit of 25 mA per channel. With a temperature drift specification of 0.01% per deg C, the module ensures measurement stability in varying ambient industrial conditions.

Frequently Asked Questions

Q: Does the NFAI135-S50 support hot-swapping while the STARDOM controller is in operation?

A: No, module removal must be performed while the power supply to the specific base unit is disconnected to prevent potential electrical arcing or system bus communication errors.

Q: What is the behavior of the input resistance when the module power is removed?

A: When power is OFF, the input resistance transitions to a high-impedance state of at least 500 kOhm, effectively isolating the field loop from the module circuitry.

Field Installation Guidelines

  • Ensure the module is securely seated in the designated slot of the base unit and locked using the provided latching mechanism.
  • Utilize the /CCC01 MIL connector cable for all field wiring to maintain the integrity of the shielding and environmental protection.
  • Route analog signal cables separately from high-voltage AC power lines to minimize induced electromagnetic interference.
  • Verify that the 24 V DC external power supply is within the 20.2-29.3 V DC range to ensure proper operation of connected transmitters.
  • Observe the 100 ms step response time when configuring loop control parameters in the STARDOM software environment to avoid overshoot or instability.