ABB

Main Functions

16‑channel discrete digital output: Receives on‑off logic commands from INFI‑90 main processor via backplane slave bus, converts internal control logic into 16‑channel solid‑state digital switching signals for field‑side equipment.More products: www.plcva.com
Dual‑voltage load support: Supports 24 VDC (250 mA per channel) or 48 VDC (125 mA per channel) field load power supply for external actuators.
Electrical isolation protection: Provides high‑voltage dielectric isolation between field output circuits and DCS internal logic circuits, suppresses industrial electromagnetic interference and prevents field surge damage to main control rack.

ABB Bailey IMDSO14 Digital Slave Output Module

Backplane bus data interaction: Communicates with multi‑function processor (IMMFP series) through INFI‑90 slave I/O bus, transmits output status feedback and module diagnostic information back to DCS controller.
Visual status diagnosis: Front‑panel LED indicators show module running fault status and individual channel ON/OFF state for fast on‑site fault location and channel testing.
Hot‑swap capability: Installed in standard MMU rack single slot; supports module replacement without shutting down the whole DCS system for continuous‑process production units.
Cooperates with termination unit: Matches NTRO‑series terminal base, connects field wiring via flat cable, realizes signal distribution for field‑site devices.plcva.com

ABB Bailey IMDSO14 Digital Slave Output Module

Process DCS discrete control: Acts as digital output interface for INFI‑90 DCS system, executes switch‑logic commands from control processors to drive field discrete devices.
Power‑generation industry: Widely used in thermal power plants, controls solenoid valves, contactors, alarm beacons, motor auxiliary relays for boiler and turbine auxiliary systems.
Petrochemical & refining plants: Realizes on‑off control for process valves, local alarms and auxiliary equipment in chemical continuous production processes.plcva.com

ABB Bailey IMDSO14 Digital Slave Output Module

Pulp‑and‑paper, metallurgy industries: Deployed for production line interlock control, equipment status indication and auxiliary actuator driving.
Legacy‑system maintenance & retrofitting: Discontinued original spare I/O card for aging INFI‑90 installations; used for failure replacement, on‑site modification and service‑life extension of old DCS systems, rarely selected for new‑project construction.
Field interlock implementation: Outputs interlock trigger signals for safety‑related auxiliary loops to complete equipment start‑stop and protection logic actions.