YASKAWA FSDrive-MV1000 Parameter Manual page 140

2.4 d: Reference Settings
• Up/Down
The frequency reference value will be saved when the Run command or the drive power is switched off. The drive will
use the frequency reference that was saved when it restarts.
• Up/Down 2 with frequency reference from digital operator
The frequency reference value will be saved when the drive power is switched off. The drive will use the frequency
reference that was saved when it restarts.
Figure 2.34
Figure 2.34 Up/Down 2 Example with Reference from Digital Operator and d4-01 = 1
• Up/Down 2 with frequency reference from input sources other than the digital operator
When a Run command is active and the Up/Down 2 command has been disabled for longer than 5 s, the bias value will
be saved in parameter d4-06. When restarting after the power is switched off, the drive will add the value saved in d4-
06 as a bias to the frequency reference.
Figure 2.35
Figure 2.35 Up/Down 2 Example with Other Reference than Digital Operator and d4-01 = 1
Note: Be sure to set the limits for Up/Down 2 properly when using d4-01 = 1 in combination with the Up/Down 2 function. Refer to
d4-08: Frequency Reference Bias Upper Limit (Up/Down 2) on page 143
(Up/Down 2) on page 143
Clearing the Value that was Saved
Depending on which function is used, the frequency reference value that was saved can be cleared by:
• Releasing the input programmed for acceleration hold.
• Setting an Up or Down command while no Run command is active.
• Parameter d4-06 is reset to zero. Refer to
140
Output
frequency
Frequency
reference
Bias
Up 2 command
Bias is saved in parameter d4-06
Output
frequency
d4-06 value
Bias
Up 2 command
for details on the limit settings.
d4-06: Frequency Reference Bias (Up/Down 2) on page 142
Bias is added to frequency
reference and reset to 0
5 s
5 s
5 s
5 s
and d4-09: Frequency Reference Bias Lower Limit
YASKAWA ELECTRIC EZZ010930 FSDrive-MV1000 Parameter Guide
common_TMonly
common_TMonly
for details.