402-736-919 Control Board Unit

Module Feature

402-736-919 is an industrial printed circuit board assembly for automation equipment.

It provides signal conditioning, data acquisition and bus communication functions for field instruments. It is installed on system backplane and supports hot swap for convenient on-site maintenance. This spare card is widely used in legacy industrial control cabinet renovation and replacement.

Working principle

Field analog and digital signals are sampled and filtered by onboard circuit.

Valid signal data is transmitted to main controller through backplane bus. Onboard isolation circuit reduces electromagnetic interference from industrial environment.

Onboard components

Signal conditioning chips, isolation module, backplane connector, surface mount components, status LED array.

LED indicators

Onboard LEDs display power supply, running state and fault alarm status.

Hardware self‑diagnosis

Power-on self-test detects power abnormality, bus contact failure and signal circuit error, fault information can be read by host controller.

Programming software

Vendor dedicated configuration software, used for signal calibration and fault diagnosis.

Electrical & Process Parameters

Model:402-736-919 Brand:Unspecified Device type:Industrial control PCB assembly Supply voltage:24V DC Function:Field signal acquisition and transmission for industrial control system

Mechanical & Structure

Mounting:Plug-in installation on system backplane

Protection class:IP20

Housing:PCB assembly with metal shielding frame

Environmental

Operating temperature:0℃ ~ +60℃

Storage temperature:-40℃ ~ +85℃

Ambient humidity:5~95% non‑condensing

Certification:CE

Status:Original industrial automation spare

Installation

Cut off cabinet power before replacement, insert board into the matched slot and lock fasteners.

Wire field signal cables according to schematic drawing, verify bus communication and signal sampling function after power on.

Interface

Backplane bus connector, field signal terminal connector.

Diagnostic

Board communication offline: Damaged backplane pin, loose board locking.

Signal reading abnormal: Isolation circuit damage, wrong wiring polarity.

No LED light: Missing 24V DC power supply.

Product Brief

402-736-919 industrial PCB assembly, signal processing control board for automation equipment maintenance replacement.