u d4: Frequency Hold Functionn d4-01: Frequency Reference Hold Function SelectionThis parameter is effective when either of the digital input functions listed below is used.• Accel/decel ramp hold function (H1-oo= A)• Up/Down function (H1-oo = 10 and 11, sets the frequency reference by digital inputs)Parameter d4-01 determines whether the frequency reference value is saved when the Run command is cleared or the powersupply is shut down.No. Parameter Name Setting Range Defaultd4-01 Frequency Reference Hold Function Selection 0 or 1 0The 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 switched off.The drive will start from 0 Hz when 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 or elsethe hold value will be cleared.Power supplyForward Run / StopHold Accel/DecelFrequency referenceOutput frequency d4-01 = 1d4-01 = 0Hold HoldOFFOFFOFFOFF OFFONON ONON ONONFigure 5.12 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 will usethe frequency reference that was saved when it restarts.Clearing the Value that was SavedDepending on which function is used, the frequency reference value that was saved can be cleared by:• Releasing the acceleration hold input.• Setting an Up or Down command while no Run command is active.5.4 d: Reference SettingsYASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual 935 Parameter Detailshttp://nicontrols.com
