I. Product Description
Model: DSDI120AV1, Part Number 3BSE018296R1
It belongs to the ABB S800 distributed I/O series high-density digital input module, compatible with AC800M, System 800xA, and Freelance complete DCS/PLC control systems. It collects the on-site 24VDC switches, limit switches, relays, proximity switches’ on/off states, and transmits them to the controller through the backplane ModuleBus bus; it supports hot swapping, channel fault self-diagnosis, hardware filtering and anti-jitter, with a 32-channel ultra-high-density layout, significantly saving cabinet installation space. It is the main card for large-scale DI point collection in process industries.
Core Brief Parameters
Channel Configuration: 32 digital inputs, divided into 2 groups × 16 channels
Input Signals: 24VDC NPN/PNP compatible, current-sensing input
Backplane Communication: S800 ModuleBus internal bus
Power Supply: Backplane power supply 24VDC; The overall power consumption is approximately 5W
Isolation: Electrical isolation between channel groups, withstand voltage 2500V AC
Installation: Standard 35mm DIN rail, equipped with TU8xx terminal base
Temperature and Humidity: Working range -20℃ ~ +60℃; 5%–95% RH without condensation
Protection: IP20; Supports hot-swappable replacement of modules while powered on
Weight and Size: Approximately 0.33kg, compact S800 standard module housing
Application Scenarios
Thermal / Hydroelectric / Thermal Power Plants
Boiler, turbine, auxiliary equipment valve feedback, fan and pump operation status, trip interlock, local switch quantity centralized collection; 800xA unit DCS standard IO card
Petroleum, chemical, refining plants
Reactor, compressor, pump valve switches, safety interlocks, explosion-proof Zone 2 area remote DI station signal collection
Metallurgical steel production line
Roller, blast furnace, dust removal, feeding system limit switches, encoder position signals, equipment start-stop status monitoring
Cement, papermaking, water treatment plants
Bulk switch points centralized collection of belt conveyors, mixers, pump stations, filtration equipment
Ship, offshore platform automation
Class certification compatible with power stations, skid-mounted equipment distributed switch quantity monitoring
Equipment renovation spare parts
Replace old S800 I/O faulty input modules, no need to modify cabinet wiring, directly compatible and replaceable
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