d1-04d1-05d1-06d1-07d1-17d1-12d1-13d1-14d1-15d1-16ONONONONONONONONONONON ON ONONONFWD (REV) Run/StopMulti-step Speed Ref. 2Multi-step Speed Ref. 3Jog Reference SelectionTimeMulti-step Speed Ref. 1Multi-step Speed Ref. 4Frequencyreferenced1-01(A1)d1-02(A2)d1-03(A3)Figure 1.39 Preset Reference Timing Diagramu d2: Frequency Upper/Lower LimitsUpper and lower frequency limits prevent motor speed from going above or below levels that may cause resonance orequipment damage.n d2-01: Frequency Reference Upper LimitSets the maximum frequency reference as a percentage of the maximum output frequency. This limit applies to all frequencyreferences.Even if the frequency reference is set to a higher value, the drive internal frequency reference will not exceed this value.No. Parameter Name Setting Range Defaultd2-01 Frequency Reference Upper Limit 0.0 to 110.0% 100.0%n d2-02: Frequency Reference Lower LimitSets the minimum frequency reference as a percentage of the maximum output frequency. This limit applies to all frequencyreferences.If a lower reference than this value is entered, the drive will run at the limit set to d2-02. If the drive is started with a lowerreference than d2-02, it will accelerate up to d2-02.No. Parameter Name Setting Range Defaultd2-02 Frequency Reference Lower Limit 0.0 to 110.0% 0.0%1.4 d: Reference SettingsYASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual 611 Parameter Details