EV-DIO/01 Digital I/O Module Unit

Module Feature

EV-DIO/01 is an opto-isolated digital input and output expansion module for industrial control system.

It is used to acquire dry contact or 24V digital switching signals from field sensors, limit switches and buttons, and output relay or transistor switching signals to drive actuators. The optical isolation circuit isolates field interference from the control side, improving anti-interference performance. Widely stocked as maintenance spare for packaging, machine tool and process control cabinet.

Working principle

Field switching signals enter the module through optocoupler isolation.

The onboard logic chip identifies the high/low level status of each input channel, uploads signal status to the host controller via bus. According to the command from controller, it drives output circuit to switch on or off, so as to control contactors, indicators and other field actuators.

Onboard components

Optocoupler isolation array, logic processing chip, input terminal bank, output drive circuit, status LED array and flame retardant plastic housing.

LED indicators

Front LEDs indicate power supply, input channel status and output channel status separately.

Hardware self‑diagnosis

Internal circuit monitors power supply and channel circuit status. Channel signal status can be read through host control software.

Programming software

Matching host configuration software, used for channel definition, signal mapping and diagnostic checking.

Electrical & Process Parameters

Model: EV-DIO/01 Brand: OEM industrial control Device type: Digital input output expansion module Function: Digital signal acquisition and switching output for industrial control system

Mechanical & Structure

Mounting: DIN rail mounting inside electrical cabinet Protection class: IP20 Housing: Flame retardant reinforced plastic

Environmental

Operating temperature: -20℃ ~ +60℃ Storage temperature: -40℃ ~ +85℃ Ambient humidity: 5~95% non‑condensing

Certification: CE Status: Original industrial control spare

Installation

Cut off 24V DC power before replacement.

Mount module on DIN rail, connect power supply, field I/O wiring and communication bus, map I/O channels in host software, test signal acquisition and output action after commissioning.

Interface

24V DC power terminal, digital input terminals, digital output terminals, communication bus connector.

Diagnostic

No input signal: Field switch failure, wiring open circuit. Output no action: Output channel damaged, control command error. Communication loss: Bus cable loose or address conflict.

Product Brief

EV-DIO/01 module, opto-isolated digital I/O expansion module spare for PLC and industrial control cabinet signal collection and output replacement.