DSDO130 | ABB Digital output board

Digital output board, 16 relay ch., 24-240 VAC/VDCThe Master Vote 3000 output stage is a safety output unit designed to reduce output spurious trips to a minimum, while at the same time guaranteeing executive action on demand. The Master Vote 3000 units are designed to support extended and independent self-testing and monitoring functions, including associated field devices such as cables and actuators. The system incorporates a fail-to-safe isolate function, and offers true output state read-back and continuous loop fault monitoring.The Master Vote 3000 functions handle:• One out of two output voting (1oo2D) in normal operation for Normally Energized (NE) and Normally De-energized (ND) signals.• Performs active testing and diagnosis on itself and the processing units to control fault tolerant and fail-to-safe fall-back.• Permits isolation of one branch for maintenance operations.• Tests and/or read-back the field output loops to provide information on internal and external component malfunctions.