620 Fieldbus control through the embedded fieldbus interface (EFB) State transition diagramThe diagram below shows the state transitions in the drive when the drive is using theABB Drives profile, and configured to follow the commands of the control word fromthe embedded fieldbus interface. The upper case texts refer to the states which areused in the tables representing the fieldbus Control and Status words. See sectionsControl Word on page 617 and Status Word on page 619.MAINS OFFPower ON (CW Bit0=0)(SW Bit6=1)(SW Bit0=0)from any state(CW=xxxx x1xx xxxx x110)(SW Bit1=1)n(f)=0 / I=0(SW Bit2=0)A B C D(CW Bit3=0)operationinhibitedOFF1 (CW Bit0=0)(SW Bit1=0)(SW Bit0=1)(CW Bit3=1andSW Bit12=1)C D(CW Bit5=0)(SW Bit2=1)(SW Bit5=0)from any state from any stateEmergency StopOFF3 (CW Bit2=0)n(f)=0 / I=0Emergency OFFOFF2 (CW Bit1=0)(SW Bit4=0)BB C D(CW Bit4=0)(CW=xxxx x1xx xxx1 1111)(CW=xxxx x1xx xx11 1111)D(CW Bit6=0)AC(CW=xxxx x1xx x111 1111)(SW Bit8=1)Dfrom any stateFault(SW Bit3=1)(CW Bit7=1)(CW=xxxx x1xx xxxx x111)(CW=xxxx x1xx xxxx 1111and SW Bit12=1)CW = Control WordSW = Status Wordn = SpeedI = Input CurrentRFG = Ramp FunctionGeneratorf = FrequencyABB Drives profileSWITCH-ONINHIBITEDNOT READY TOSWITCH ONREADY TOSWITCH ONREADY TOOPERATEOPERATIONINHIBITEDOFF1ACTIVEOPERATIONENABLEDRFG: OUTPUTENABLEDRFG: ACCELERATORENABLEDOPERATIONOFF2ACTIVEFAULTOFF3ACTIVESTATEconditionrising edge
