Operating Instruction - Frequency Inverter 230V / 400V ... - opis.cz

16.2 Voltage controllerThe voltage controller contains the functions necessary for monitoring the DC linkvoltage.− The DC link voltage which rises in generator operation or in the braking process ofthe 3-phase machine is controlled to the set limit value by the voltage controller.− The mains failure regulation uses the rotation energy of the drive to bridge shorttermpower failures.The voltage controller is set with the parameter Operation Mode 670 in accordancewith the application.Operation modeFunction0 - Off The function is switched offOvervoltage controller switched on,1 - Udc-Limitation activewith motor chopperMains failure regulation switched on,2 - Mains Support activewith motor chopper, for quick shutdownUdc-Limit. & Mains Overvoltage controller and mains failure regulation3 -Supp. activeswitched on, with motor chopperMains Support active, Mains failure regulation switched on,12 -Chopper not active without motor chopperUdc-Limit. & MainsOvervoltage controller and mains failure regulation13 - Supp. active,switched on, without motor chopperwithout ChopperThe function motor chopper is available in the field-oriented control methods (in configurations210, 230, 410, 411 and 430).When an operation mode with motor chopper is selected, set the Trigger Threshold507 to the Reference DC-Link Limitation 680.Operation mode Overvoltage control,Voltage controller: Parameter Operation Mode 670 = 1680Ud, fOvervoltage controller activeUdf421 or 423681The overvoltage controller prevents a switch-off of the frequency inverter in generatoroperation. The reduction of the drive speed by a ramp gradient selected via the parameterDeceleration Clockwise 421 or Deceleration Anticlockwise 423 can lead toan overvoltage in the DC link.t02/06 145