YASKAWA GA700 Series Technical Manual page 726

12.5 d: References
• 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.
Figure 12.65 Frequency Reference Hold with Accel/Decel Hold Function
• 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.
Figure 12.66 Up/Down 2 Example with Reference from Keypad and d4-01 = 1
• 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.
726 YASKAWA SIEPC71061705H GA700 Series Technical Manual