ABB DOS810 3BSE078768R1 Digital Output Module

Technical Overview

The DOS810 (3BSE078768R1) is a high-reliability digital output module designed for the ABB Select I/O system. It provides a single-channel, current-limited 24V DC output typically used to drive 2-wire field devices like solenoids and relays. Built for mission-critical industrial automation, it supports full redundancy, hot-swap capabilities, and comprehensive loop supervision (detecting short and open circuits), ensuring maximum system uptime and simplified maintenance.

Detailed Technical Specifications

• Manufacturer: ABB

• Article Number: 3BSE078768R1

• Module Type: Digital Output (Select I/O)

• Channels: 1

• Signal Rating: 24V DC / 0.6A

• Redundancy: Supported

• Hot Swap: Supported

• Output Load Range: 40 – 5000 Ω (Max inductor time constant: 50 ms)

• Isolation: Galvanic isolation; factory tested at 3060V DC

• Power Dissipation: Ultra-low 0.36 W

• Robustness: ±35V protection between all terminals

• Certifications: Suitable for Hazardous Areas/Locations

Advanced Diagnostics & Supervision

• Loop Supervision: Real-time detection of short circuits and open circuits in field wiring.

• Internal Hardware Watchdog: Continuous monitoring of module health and communication integrity.

• Power Management: Monitors internal power levels and power injection stability.

• Field Power Protection: Current-limited output to protect field instrumentation and wiring.