0G0010.00-090 | ABB Cable I/O Bus expansion

Distributed I/O bus controls and supervises each cabinet fan separately. It detectsmalfunctioning fans and indicates them with warning or fault messages. The controlprogram performs identification run for cabinet fans to detect nominal speed values of thefans.Typically, the control unit of the supply unit acts as an I/O bus master. Cabinet fans in drivecubicles are controlled with separate PWM (pulse-width modulation) outputs. When thecontrol program detects a malfunctioning fan, DDCS communication delivers the warningcode from the supply unit to the inverter unit. You can access the settings of the distributedI/O bus via panel bus or Drive composer PC tool.