DO890 3BSC690074R1 ABB Digital Output

Description

The ABB DO890 3BSC690074R1 includes Intrinsic Safety protection components on each channel for connection to process equipment in hazardous areas without the need for additional external devices.

Each channel can drive a nominal current of 40 mA into a 300-ohm field load such as an Ex-certified solenoid valve, alarm sounder unit, or indicator lamp. Open and short circuit detection can be configured for each channel. All four channels are galvanic isolated between channels and from the ModuleBus and power supply. Power to the output stages is converted from the 24 V on the power supply connections.

Key Feature

Keying Code: Features a specific keying code (AB) to prevent incorrect module insertion.

Compact Design: Standard S800 I/O module dimensions for easy installation in control cabinets.

Module Termination Unit (MTU) Compatibility: Requires specific MTUs (TU890 for Ex applications, TU891 for non-Ex) which facilitate two-wire connection to process devices without additional terminals.

EMC Protection: Built-in electromagnetic compatibility features to ensure reliable operation in industrial environments.

Application

Industries with hazardous environments: Common in oil and gas, chemical processing, pharmaceuticals, and any other industry where flammable gases, vapors, or dust may be present.

General process control in hazardous areas: Interfacing with various low-power digital output devices that are certified for use in potentially explosive atmospheres.

Controlling Ex-certified indicator lamps: Giving visual status indications in classified areas.