Core Configuration

Integrated high-density integrated hybrid I/O

Digital Input DI: 16 channels

Digital Output DO: 8 channels

Analog Input AI: 4 channels

Analog Output AO: 2 channels Electrical parameters

Digital quantity DI/DO

Operating voltage: 24VDC

Response speed: Millisecond level

Supports contact signals, valve position feedback, and solenoid valve drive

Has intelligent diagnosis for open circuit and short circuit

Analog quantity AI

Standard signal: 4-20mA

Accuracy: ±0.1% FS

Suitable for temperature, pressure, level, and flow measurement

Analog quantity AO

Standard signal: 4-20mA

Has strong load capacity and can directly drive on-site regulating valves

Used for safety circuit regulation output Product features

Single-module integrates multiple signals, significantly reducing cabinet slots

Triple redundant hardware voting, no downtime in case of failure, supports hot-swappable replacement

Complete self-diagnosis function, real-time reporting of faults, event sequence recording (SOE)

Wide temperature operation: -40℃ ~ +70℃, suitable for industrial harsh environments

Electrical isolation design, strong anti-interference ability

Compatible with mainstream configuration software, convenient programming and debugging Applicable scenarios

Simplified configuration of medium-sized safety instrument systems

Compact ESD, BMS, F&G systems for the chemical, petrochemical, power, and oil & gas industries

Limited space and few points, requiring simultaneous consideration of both discrete and analog safety control projects

Series differentiation

4501/4502: Pure digital input

4503/4504: Pure digital output

4505/4506: Analog input

4507: Analog output

4508: Integrated mixed all-in-one I/O