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d2-03: Master Speed Reference Lower Limit
Unlike frequency reference lower limit (d2-02) which will affect the frequency reference no matter where it is sourced from
(i.e., analog input, preset speed, Jog speed, etc.), the master speed lower limit (d2-03) sets a lower limit that will only affect
the analog input (terminals A1 and A2) that is the active master speed frequency.
Set as a percentage of the maximum output frequency.
Note:
The lower limits for the Jog frequency, multi-step speed settings, and 2-step speed settings do not change. When lower limits are set to both
the frequency reference (d2-02) and the main frequency reference (d2-03), the drive uses the greater of those two values as the lower limit.
No.
Parameter Name
Setting Range
Default
d2-03
Master Speed Reference Lower Limit
0.0 to 110.0%
0.0%
u
d3: Jump Frequency
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d3-01 to d3-04: Jump Frequencies 1, 2, 3, and Jump Frequency Width
In order to avoid continuous operation at a speed that causes resonance in driven machinery, the drive can be programmed
with three separate Jump frequencies that will not allow continued operation within specific frequency ranges. If the speed
reference falls within a Jump frequency dead band, the drive will clamp the frequency reference just below the dead band and
only accelerate past it when the frequency reference rises above the upper end of the dead band.
Setting parameters d3-01 through d3-03 to 0.0 Hz disables the Jump frequency function.
No.
Parameter Name
Setting Range
Default
d3-01
Jump Frequency 1
0.0 to 400.0 Hz
0.0 Hz
d3-02
Jump Frequency 2
0.0 to 400.0 Hz
0.0 Hz
d3-03
Jump Frequency 3
0.0 to 400.0 Hz
0.0 Hz
d3-04
Jump Frequency Width
0.0 to 20.0 Hz
1.0 Hz
shows the relationship between the Jump frequency and the output frequency.
Output
frequency
Frequency
reference
Jump
Frequency
Width (d3-04)
Jump
Frequency 3
d3-03
Jump
Frequency 2
d3-02
Jump
Frequency 1
d3-01
Frequency
reference
decreases
Frequency
reference
increases
Jump
Frequency
Width (d3-04)
Jump
Frequency
Width (d3-04)
Figure 5.35 Jump Frequency Operation
Note:
1.
The drive will use the active accel/decel time to pass through the specified dead band range but will not allow continuous operation in
that range.
2.
When using more than one Jump frequency, make sure that d3-01
≥
d3-02
≥
d3-03.
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d4: Frequency Hold and Up/Down 2 Function
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d4-01: Frequency Reference Hold Function Selection
This parameter is effective when either of the digital input functions listed below is used.
• Accel/decel ramp hold function (H1-
oo
= A)
5.4 d: Reference Settings
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YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual