Internal frequencyreferenced2-01OperatingrangeFrequency Reference Upper LimitSet frequency referenceFrequency Reference Lower Limitd2-02Figure 1.25 Frequency Reference: Upper and Lower Limitsn d2-03: Master Speed Reference Lower LimitSets a lower limit as a percentage of the maximum output frequency that will only affect a frequency reference entered fromthe analog input terminals (A1 or A2) as the master speed reference. This is unlike parameter d2-02, which affects all frequencyreferences regardless of their source.Note: When lower limits are set to both parameters d2-02 and d2-03, the drive uses the greater of those two values as the lower limit.No. Parameter Name Setting Range Defaultd2-03 Master Speed Reference Lower Limit 0.0 to 110.0% 0.0%u d3: Jump Frequencyn d3-01 to d3-04: Jump Frequencies 1, 2, 3 and Jump Frequency WidthThe Jump frequencies are frequency ranges at which the drive will not operate. The drive can be programmed with threeseparate Jump frequencies to avoid operating at speeds that cause resonance in driven machinery. If the speed reference fallswithin a Jump frequency dead band, the drive will clamp the frequency reference just below the dead band and only acceleratepast it when the frequency reference rises above the upper end of the dead band.Setting parameters d3-01 through d3-03 to 0.0 Hz disables the Jump frequency function.No. Parameter Name Setting Range Defaultd3-01 Jump Frequency 1 0.0 to 240.0 Hz 0.0 Hzd3-02 Jump Frequency 2 0.0 to 240.0 Hz 0.0 Hzd3-03 Jump Frequency 3 0.0 to 240.0 Hz 0.0 Hzd3-04 Jump Frequency Width 0.0 to 20.0 Hz 1.0 HzFigure 1.26 shows the relationship between the Jump frequency and the output frequency.1.4 d: Reference Settings58 YASKAWA SIEP YAIZ1U 03B YASKAWA AC Drive – Z1000 Programming Manual
