Program features70Step referencingIt is possible to predefine four step references. The step references are selected withdigital inputs. Step reference activation overrides the external speed reference.This function operates on a 6 ms time level.The four step references are based on a combination of three digital inputs, forexample, DI3, DI4 and DI5.If you need any other combination than three digital inputs, you can use the followingparameters for defining the combination. For example, if you need two-stepreferences with one digital input, you can set:• Parameter 12.01 STEP REF SEL to STEP POINTER (Speed defined by pointerselections)• Parameter 12.02 to, for example, 500 rpm• Parameter 12.03 to, for example, 1000 rpm• Parameter 12.06 to, for example, +.001.017.04 (= DI5)After this:• If DI5 = 0, step reference 500 rpm is valid by par. 12.02.• If DI5 = 1, step reference 1000 rpm is valid by par. 12.03.SettingsParameter group 12 STEP REFERENCING.DI3 DI4 DI5 Operation0 0 0 STEP REF 11 0 0 STEP REF 21 1 0 STEP REF 31 1 1 STEP REF 4
