The operation depends on with what function parameter d4-01 is used.Setting 0: Disabled• Acceleration HoldThe hold value will be reset to 0 Hz when the Run command is canceled or the drive power is switched off. The activefrequency reference will be the value the drive uses when it restarts.• Up/DownThe frequency reference value will be reset to 0 Hz when the Run command is canceled or the drive power is switchedoff. The drive will start from 0 Hz when restarted.• Up/Down 2The frequency bias is not saved when the Run command is switched off or 5 s after the Up/Down 2 command has beenreleased. The Up/Down 2 function will start with a bias of 0% when the drive is restarted.Setting 1: Enabled• Acceleration HoldThe last hold value will be saved when the Run command or the drive power is switched off. The drive will use the valuethat was saved as the frequency reference when it restarts. The accel/decel hold input must be enabled the entire time orelse the hold value will be cleared.Power supplyForward Run / StopHold Accel/DecelFrequency referenceOutput frequency d4-01 = 1d4-01 = 0Hold HoldOFFOFFOFFOFF OFFONON ONON ONONFigure 5.36 Frequency Reference Hold with Accel/Decel Hold Function• Up/DownThe frequency reference value will be saved when the Run command or the drive power is switched off. The drive willuse the frequency reference that was saved when it restarts.• Up/Down 2 with Frequency Reference from Digital OperatorWhen the digital operator is selected as the frequency reference source, the bias will be added to the frequency referencethat was selected 5 s after the Up/Down 2 command has been released, and then reset to 0 afterwards. The new frequencyreference value is then saved. When the Run command or the power supply is switched off, the drive will use the valuethat was when it restarts.5.4 d: Reference SettingsYASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual 1575 Parameter Details
