Fieldbus Profile for Vacon brake chopper unit vacon • 1924-hour support +358 (0)40 8371 150 • Email: vacon@vacon.com5. FIELDBUS PROFILE FOR VACON BRAKE CHOPPER UNITFollowing document describes fieldbus profile for Brake Chopper Unit application.If Profibus, Modbus or CANopen is used then Operate Mode = Bypass is to be used to be able toread or write the following info.Signals from Overriding System to Vacon regenerative Drive.Fieldbus Data NameSignalName Min MaxFBScale Scaling DescriptionControl WordMainControlWord See bitwise description belowReference Value Reserved for future use.Process Data IN1 Reserved for future use.Process Data IN2 Reserved for future use.Process Data IN3 Reserved for future use.Process Data IN4 Reserved for future use.Process Data IN5 Reserved for future use.Process Data IN6 Reserved for future use.Process Data IN7 Reserved for future use.Process Data IN8 Reserved for future use.Table 5-1. Signals from overriding systemSignals from Vacon Drive to Overriding systemFieldbus Data Name Signal NameFBScale Scaling DescriptionMain Status Word Main Status Word See bitwise description belowActual Value DC Voltage 1=1V DC Voltage in VoltsProcessDataOut1 Total current 10=1A Total CurrentProcessDataOut2 Power 10=1% PowerProcessDataOut3 Active fault Active FaultProcessDataOut4 Reserved for future use.ProcessDataOut5 Reserved for future use.ProcessDataOut6 Reserved for future use.ProcessDataOut7 Reserved for future use.ProcessDataOut8 Reserved for future use.Table 5-2. Signals to overriding system