NFAI835-H00 Analog I/O Module Unit

Feature & Principle

It collects 4-20mA analog signals from field transmitters, converts them into digital signals for the FCN controller. Meanwhile it converts control commands from CPU into 4-20mA output to drive regulating valves. Each channel is electrically isolated, built-in HART function can read extra diagnostic data from HART instruments, improving loop reliability.

Specifications

Model: NFAI835-H00 Brand: Yokogawa Series: STARDOM FCN Signal: 4AI / 4AO, 4~20mA Function: HART communication, channel isolation Mounting: Rack plug-in Certification: CE

Components & Diagnostics

Signal isolation circuit, A/D & D/A conversion chip, HART transceiver, backplane connector, status LED indicator, terminal block. Common faults: channel no input/output, HART communication failure, signal drift, bus offline, terminal corrosion.

Product Brief

NFAI835-H00 analog I/O module, Yokogawa STARDOM spare widely used for petrochemical, power plant and pipeline control cabinet analog signal loop maintenance.