PLCs, Power Supplies & Others

The ABB DSDI130 delivers rugged digital signal acquisition for process control in explosive environments. This ATEX and IECEx certified input module provides 32 digital channels with full environmental sealing for extreme operating conditions.

Key Technical Specifications

Extended Temperature Digital Input Architecture

This module features 32 opto-isolated digital input channels arranged in four independent groups of eight. Unlike standard industrial modules, the ABB DSDI130 maintains full functionality from -40°C to +70°C, enabling reliable operation in unheated facilities and extreme climates.

Each channel accepts 24 VDC signals from field devices while providing complete galvanic isolation. This design eliminates ground loop interference and protects control system electronics from voltage transients.

Hazardous Location Certification

The DSDI130 holds both ATEX and IECEx certifications for use in explosive atmospheres. This compliance allows installation in Zone 2 gas groups and Zone 22 dust environments, significantly expanding application possibilities.

Engineers can confidently deploy this module in oil refineries, chemical processing plants, and grain handling facilities. The certification covers both gas and dust explosion risks without requiring additional protective enclosures.

Mechanical Design and Environmental Sealing

Weighing approximately 0.45 kg, this digital input module measures 240 mm x 110 mm x 35 mm. Its conformal-coated PCB resists humidity and corrosive vapors, while the rugged aluminum housing provides EMI/RFI shielding.

The module connects via a 50-pin male D-Sub connector with locking screws. This termination method ensures reliable electrical contact even under continuous vibration common in industrial settings.

System Integration and Compatibility

The ABB DSDI130 integrates seamlessly with ABB’s distributed control system architecture. It communicates through the S800 I/O bus with ABB AC 800M controllers and supports both redundant and non-redundant configurations.

Configuration software allows engineers to set input filtering, channel inversion, and diagnostic reporting. Each of the 32 input channels includes individual LED indication for rapid troubleshooting during commissioning.

Power and Energy Considerations

This module draws just 3.2 W under full load, minimizing heat generation within control cabinets. The low power consumption proves especially valuable in hazardous area installations where ventilation limitations exist.

Internal energy storage components maintain configuration data during brief power interruptions. The module restores full operation within 100 ms of power restoration without user intervention.

Application Versatility

Process industries deploy the ABB DSDI130 for numerous critical monitoring functions. Typical applications include emergency shutdown system interfacing, tank level limit detection, valve position confirmation, and motor control center status monitoring.

The wide temperature range makes this module particularly suitable for Arctic region installations, desert facilities, and unheated warehouse environments. Field devices connect through standard ABB termination blocks using screw terminal or compression clamp connections.

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