Parameter Details1111.5 d: Reference SettingsYASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual 677◆ d4: Frequency Reference Hold and Up/Down 2 Functiond4 parameters set the Frequency Reference Hold function, the Up/Down and Up/Down 2 commands.WARNING! Crush Hazard. Make sure that proper safety measures have been taken in hoist-type application to prevent the loadfrom falling. Failure to do so may result in injury.WARNING! Sudden Movement Hazard. If using the Baseblock command with hoist-type application, make sure the holdingbrake is closed when the Baseblock command is input and the drive shuts off its output. Failure to do so may result in the motorsuddenly coasting when the Baseblock command is input, which may result in the load slipping or falling.WARNING! Sudden Movement Hazard. When using a mechanical holding brake with the drive in a lifting application, close thebrake when the drive output is cut off by a baseblock command triggered by one of the input terminals. Failure to comply willresult in a slipping load from the motor suddenly coasting when the baseblock command is entered and may cause seriousinjury or death.• Frequency Reference Hold Function Command: This acceleration/deceleration ramp hold commandmomentarily stops the acceleration/deceleration of the motor with a multi-function digital input, and continuesoperating the motor at the present output frequency at which the command reference was input. Acceleration/deceleration will resume when the acceleration/deceleration ramp hold command is switched OFF.With a crane for example, use the function in combination with 2-stage push button to stop acceleration andoperate at low speed with one of the output frequencies.• Up/Down command: The Up/Down command is a function to raise and lower the frequency reference byswitching multi-function digital input ON/OFF. The Up/Down command overrides frequency references fromthe analog input terminal, pulse train input terminal and keypad.• Up/Down 2 command: The Up/Down 2 command is a function to accelerate or decelerate by adding a presetbias value to the frequency reference. The Up/Down 2 command adds a bias value by switching the multi-function digital input ON/OFF.■ d4-01: Freq Reference Retention SelectNo.(Hex.) Name Description Default(Range)d4-01(0298)Freq ReferenceRetention Select Determines whether the frequency reference or the frequency bias (Up/Down 2) value is saved when the Stop command is entered or the powersupply is shut down.0(0, 1)This parameter is available when H1-xx [MFDI Function Select] has been set to one of the following.• H1-xx = A [Accel/Decel Ramp Hold]• H1-xx = 10/11 [Up/Down Command]• H1-xx = 75/76 [Up/Down 2 Command]The Frequency Reference Hold function depends on which function it is combined with.0 : Disabled• Acceleration/deceleration Ramp HoldThe hold value will be reset to 0 Hz when the Stop command is entered or the drive is de-energized. The activefrequency reference will be the value the drive uses when it restarts.• Up/Down CommandThe frequency reference value will be reset to 0 Hz when the Stop command is entered or the drive is de-energized. The drive will start from 0 Hz when it is restarted.• When combined with the Up/Down 2 CommandThe frequency bias is not saved when the Stop command is entered, or 5 s after the Up/Down 2 command hasbeen released. The Up/Down 2 function will start with a bias of 0% when the drive is restarted.1 : Enabled• Acceleration/deceleration Ramp HoldThe last hold value will be saved when the Run command is cleared or when the drive is de-energized. Thedrive will use the saved value as the frequency reference when it restarts.Note:Make sure to continuously enable multi-function digital input terminal set for Accel/Decel Ramp Hold [H1-xx = A] when energizing thedrive. If the digital input does not switch ON, the hold value is cleared and reset to 0 Hz.V/f CL-V/f OLV CLV AOLV OLV/PMOLV/PM AOLV/PM CLV/PM EZOLV
