Yokogawa NFAI835-S51 Analog I/O Module, 4 Input 4 Output

Product Overview

The Yokogawa NFAI835-S51 is a reliable analog input and output module. It features 4 input channels for 4 to 20 mA signals. It also has 4 output channels for 4 to 20 mA signals. Each channel is isolated for safety. This module supports HART communication. It is ideal for precise industrial control tasks.

Application Scenarios

This module works well in process control systems. Use it in chemical plants and refineries. It fits power generation and water treatment facilities. The NFAI835-S51 also suits oil and gas operations. Its robust design handles harsh environments. Engineers trust it for critical monitoring and control.

Technical Specifications

Input accuracy is ± 0.1 percent of full scale. Output accuracy is ± 0.3 percent of full scale. Data refresh cycle is 10 ms. Input step response time is 100 ms. Output step response time is 100 ms. Temperature drift is max ± 0.01 percent per degree Celsius. Withstanding voltage is 500 V AC between input and system. It is also 500 V AC between channels. Output fallback is set per channel. Transmitter power supply is 20.2 to 29.3 V. Output current limit is 25 mA. It supports two wire and four wire transmitters. Max current consumption is 360 mA at 5 V DC. It consumes 450 mA at 24 V DC. Weight is 0.3 kg.

Installation & Maintenance Guide

Mount the module on a standard DIN rail. Ensure proper grounding before use. Connect input and output wires carefully. Set transmitter type per channel using the terminal. Check all connections for tightness. Perform regular visual inspections. Keep the module clean and dry. Replace it if any damage appears.

Packing List

One Yokogawa NFAI835-S51 Analog I/O module. One user manual. One warranty card. One packing list.