YASKAWA FSDrive-MV1000 Parameter Manual page 145

• 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 2.35
Figure 2.35 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 2.36
Figure 2.36 Up/Down 2 Example with Other Reference than Digital Operator and d4-01 = 1
Note: Set the limits for Up/Down 2 properly when using d4-01 = 1 in combination with the Up/Down 2 function.
Frequency Reference Bias Upper Limit (Up/Down 2) on page 148
Down 2) on page 148
Clearing the Saved Value
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.
YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
Output
frequency
Frequency
reference
Bias
Up 2 command
Output
frequency
d4-06 value
Bias
Up 2 command
for details on the limit settings.
Refer to d4-06: Frequency Reference Bias (Up/Down 2) on page 147
Bias is added to frequency
reference and reset to 0
5 s
5 s
Bias is saved in parameter d4-06
5 s
5 s
and d4-09: Frequency Reference Bias Lower Limit (Up/
2.4 d: Reference Settings
common_TMonly
common_TMonly
Refer to d4-08:
for details.
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