16.8.4 Improvements with Open-Loop-operationInformationThe described possibilities for improvements apply only to parameter which are available only in theU/f-operation mode (Open-Loop).Possibilities for improving travel curve or the signal-timing are described in the chapter"Commissioning".16.8.4.1 Optimizing start up behaviorIf the motor has a rollback during the start, the minimum current, which is impressed to the motor, toolow. In this case the parameter Controller/I_IxR must be increased to minimise the rollback.Control|-" I_IxR 15 A|-" 1816.8.4.2 Slip-compensationDue to the different speeds in upwards and downwards direction the different positioning travels orinexactness during the stopping can occur. By having nearly the same speed in both directions theseinaccuracies can be minimised. The adjustment of the speed is carried out by the slip-compensation.The slip-compensation will be activated with the parameter Controller/s_COMP=On.Control|-" s_COMP On|-" OnU/F: Slip compensation16.9 Operation with a 3-phase 230 VAC power supplyDer ZETADYN 4 ZETADYN 4C can be operated with a voltage supply 3~ 230 VAC.For this purpose, it is only necessary to adapt various monitoring functions to the lower power supply.Power component|-" UDC_N 325 V|-" 325Nominal DC voltageIn the menu "Power section" configure the parameter "UDC_N=325 V"Power component|-" UDC_MIN 250 V|-" 250Min. DC voltageIn the menu "Power section" configure the parameter "UDC_MIN=250 V"Power component|-" UDC_MAX 760 V|-" 760Max. DC voltageIn the menu "Power section" configure the parameter "UDC_MAX=760 V"Power component|-" U_BC 650 V|-" 650BC intervention voltageIn the menu "Power section" configure the parameter "U_BC=650 V"Translation of the original operating instructionsZETADYN 4C Special functionsR-TBA12_01-GB 1415 Part.-No. 00163371-GB175/20416Special functions
