6 4 KEB COMBIVERT F4-C6Name: Basis28.01.98© KEB Antriebstechnik, 1997All Rights reservedFunctional Description Set Value and Ramp AdjustmentChapter Section Page Date100%100% REF / ±REFSelection of set value androtation direction (oP.0)Set value sources:Sources of direction of rotation:Fine adjustment±10%Analog_SetTo preset the speed of a drive two potentiometers shall be set. A coarse adjustmentof the set value shall be made with the first potentiometer and a fine adjustment withthe second potentiometer.1. Connect potentiometer for coarse adjustment of set value to REF2. Connect potentiometer for fine adjustment to ±REF3. Reduce the amplification of the ±REF-channel to the desired fine adjustment(e.g. An.3 = „0,1“ for ±10% change)4. Adjust An.12 so that ±REF serves as AUX-signal (An.12 = „1“, see 6.2.7)5. Adjust the AUX-function so that the analog set value is created from Ref_internal+Aux_internal (An.13 = „1“)Example to AUX-FunctionPicture 6.4.2.b Example to AUX-FunctionWith parameter oP.0 „Selection of set value and direction of rotation“ the requuiredset value source can be linked with the corresponding rotation source (see picture6.4.2).The possible set value sources are a result of the previously described set values.Regarding the source of direction of rotation there are three different settingspossibilitie:oP.3 Display Set direction of rotation0 LS (Low Speed)standstill1 F (Forward) forward2 r (Reverse) reverse1. Direction of rotation viaparameter oP.3 „DigitalRotation Setting“