226 Actual signals and parameters2020 BRAKECHOPPERSelects the brake chopper control.When using the drive in a Common DC bus system, theparameter must be set to EXTERNAL. When in CommonDC, the drive cannot feed or receive more power than PN.INBUILTINBUILT Internal brake chopper control.Note: Ensure the brake resistor(s) is installed and theovervoltage control is switched off by setting parameter2005 OVERVOLT CTRL to selection DISABLE. See also2005 OVERVOLT CTRL selection EN WITH BRCH.0EXTERNAL External brake chopper control.Note: The drive is compatible only with ABB ACS-BRK-Xbrake units.Note: Ensure the brake unit is installed and the overvoltagecontrol is switched off by setting parameter 2005OVERVOLT CTRL to selection DISABLE.12021 MAX SPEEDSELMaximum speed source for torque control PAR 2002PAR 2002 Value of parameter 2002 MAXIMUM SPEED 0EXT REF 1 Value of signal 0111 EXTERNAL REF 1 121 START/STOP Start and stop modes of the motor2101 STARTFUNCTIONSelects the motor starting method. AUTOAUTO The drive starts the motor instantly from zero frequency ifparameter 9904 MOTOR CTRL MODE setting is SCALAR:FREQ. If flying start is required use selection SCAN START.If parameter 9904 MOTOR CTRL MODE value is VECTOR:SPEED or VECTOR: TORQ, the drive pre-magnetizes themotor with DC current before the start. The pre-magnetizingtime is defined by parameter 2103 DC MAGN TIME. Seeselection DC MAGN.For permanent magnet synchronous motors, flying start isused if the motor is rotating.1All parametersNo. Name/Value Description Def/FbEq
