d4-01: Freq Reference Hold Selection

No. (Hex.)	Name	Description	Default (Range)
d4-01 (0298)	Freq Reference Hold Selection	Sets the function that saves the frequency reference or the frequency bias (Up/Down 2) after a Stop command or when de-energizing the drive.	0 (0, 1)

Set H1-xx [MFDI Function Selection] to one of these values to enable this parameter:

• A [Accel/Decel Ramp Hold]

• 10/11 [Up/Down Command]

• 75/76 [Up/Down 2 Command]

0

Disabled

• Acceleration/Deceleration Ramp Hold

  When you enter a Stop command or de-energize the drive, the hold value is reset to 0 Hz. The drive will use the active frequency reference when it restarts.

• Up/Down Command

  When you enter a Stop command or de-energize the drive, the frequency reference value is reset to 0 Hz. The drive will start from 0 Hz when it restarts.

• Up/Down 2 Command

  When you enter the Stop command or 5 s after you release the Up/Down 2 command, the drive does not save the frequency bias. The Up/Down 2 function will start with a bias of 0% when the drive restarts.

1

Enabled

• Acceleration/Deceleration Ramp Hold

  When you clear the Run command or de-energize the drive, it will save the last hold value. The drive will use the saved value as the frequency reference when it restarts.

  Note:

  When you energize the drive, continuously enable the MFDI terminal set for Accel/Decel Ramp Hold [H1-xx = A]. If the digital input does not activate, the drive will clear the hold value and set it to 0 Hz.

  

• Up/Down Command

  When you clear the Run command or de-energize the drive, it will save the frequency reference value. The drive will use the saved value as the frequency reference when it restarts.

• Up/Down 2 Command with Frequency Reference from Keypad

  When a Run command is active and you release the Up/Down 2 command for longer than 5 s, the drive adds the Up/Down 2 bias value to the frequency reference and sets it to 0. The drive saves the frequency reference value to which the bias value was added. The drive will use the new value as the frequency reference when it restarts.

  

• Up/Down 2 Command with Frequency Reference from Input Sources Other Than the Keypad

  When a Run command is active and you release the Up/Down 2 command for longer than 5 s, the drive will save the bias value in d4-06 [Frequency Ref Bias (Up/Down 2)]. The drive saves the frequency reference + d4-06 as a frequency reference value. The drive will use the new value as the frequency reference when it restarts.

  

Note:

To use the combination of the frequency reference hold function and the Up/Down 2 function, configure the Up/Down 2 upper limit [d4-08] and lower limit [d4-09] correctly.