Yokogawa NFAI835-S50 Analog I/O Module 4 Input / 4 Output 4–20 mA
Yokogawa NFAI835-S50
Analog I/O Module
4-Channel Analog Input
Place of Origin:
JAPAN
Brand Name:
Yokogawa
Yokogawa NFAI835-S50
,Analog I/O Module
,4-Channel Analog Input
Yokogawa NFAI835-S50
Analog I/O Module · FCN Control Systems
Product Overview
Designed for analog signal interfaces in compatible Yokogawa FCN control systems, the NFAI835-S50 combines current-signal acquisition and output in one module. It supports process measurement inputs and analog control outputs where a compatible 4–20 mA interface is required.
Key specifications for identification and replacement assessment.
Model code and ordering options
- -S: Standard type.
- 5: No explosion protection.
- 0: Basic type.
- /13S00: Pressure-clamp terminal block option for analog I/O.
- /13S10: Pressure-clamp terminal block option with surge absorber.
- /CCC01: Connector cover option for MIL cable.
Accessory suffixes indicate separate ordering configurations. Confirm the required terminal connection, system compatibility and complete part code before ordering.
The NFAI835-S50 datasheet specifications identify the electrical interface and operating characteristics used for product verification.
Suitable for compatible Yokogawa FCN control installations that require analog current input and output.
- Unstable or missing input: process values may become unreliable or unavailable to the controller.
- Output channel fault: a connected actuator or control device may not receive the expected current command.
- Module or channel alarm: affected control loops may require troubleshooting and could contribute to unplanned downtime.
Check field wiring, loop conditions, channel configuration and system diagnostics before replacing the module.
- Testing: inspection and available test results can be confirmed with the quotation.
- Packaging: protective packaging for transport.
- Returns / DOA: report issues promptly with order details and fault evidence for review.
- Warranty: coverage and remedies follow the agreed quotation and order terms.
Your Next Step: Request a Quotation
Send the part number, quantity and destination for a quotation. Our team can help review the requested configuration and available supply options.
1. What signals does the NFAI835-S50 support?
It supports four 4–20 mA analog input channels and four 4–20 mA analog output channels.
2. What are the input and output accuracy specifications?
The specified input accuracy is ±0.1% of full scale, while output accuracy is ±0.3% of full scale.
3. What output load resistance is supported?
The specified output load resistance range is 0–750 Ω. Confirm the connected load and loop design before commissioning.
4. Does NFAI835-S50 include a terminal block?
The terminal block and connector-cover options depend on the complete order code. Confirm the installed connection type and required accessories before ordering.
5. What information should I provide when ordering?
Provide the complete part number, quantity, destination, required date and machine/system model. A clear nameplate photo can help verify the requested configuration.
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