Core configuration

High-density integrated multi-functional I/O control module

Digital input DI: 16 channels (24VDC)

Digital output DO: 16 channels (24VDC/2A)

Analog input AI: 8 channels (4-20mA)

Analog output AO: 4 channels (4-20mA)

Integrated loop control and logic operation functions Electrical parameters

Digital quantity DI/DO

Operating voltage: 24VDC ±10%

Input impedance: ≥10kΩ

Output load: Maximum 2A per point, short-circuit protection

Response time: ≤1ms

Includes fault detection for open circuit, short circuit, and abnormal load

Analog quantity AI

Signal range: 4-20mA

Accuracy: ±0.1% FS

Resolution: 16bit

Input impedance: 250Ω

Analog quantity AO

Signal range: 4-20mA

Drive capability: ≥750Ω

Accuracy: ±0.15% FS

Refresh rate: 100ms

System power supply

Power supply: 24VDC (backplane power supply)

Power consumption: ≤25W

Isolation strength: 1500VAC isolation between I/O and the system Product features

All-in-one integration: Single module covers DI/DO/AI/AO, saving 50% of cabinet space

Triple redundancy: TMR hardware voting, no single point of failure, no system downtime in case of faults

Real-time control: Built-in PID and logic functions, supporting closed-loop regulation and interlock

Full self-diagnosis: Real-time monitoring and reporting of I/O channels, power supply, communication, and load status

Hot-swappable: Online replacement without interrupting system operation, convenient maintenance

Wide temperature resistance and anti-interference: Operates from -40℃ to +70℃, industrial-grade anti-interference for EMI/EMC

SOE events: Millisecond-level event sequence recording, facilitating accident traceability Applicable scenarios

Chemical / Petrochemical / Oil and Gas: ESD emergency stop, BMS burner management, F&G fire protection system

Power / Energy: Boiler protection, turbine interlock, unit control

Compact SIS project: Limited space, dense points, need to combine I/O + control functions

Critical loop control: Pressure / Temperature / Flow closed-loop regulation + safety interlock integration

Series differentiation

5701: 16-channel DI digital input module

5702: 16-channel DO digital output module

5703: 8-channel AI analog input module

5704: 16DI + 16DO + 8AI + 4AO all-in-one mixed control module