5.4 d: Reference Settings
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual 167
■ d2-03: Master Speed Reference Lower Limit
Unlike frequency reference lower limit (d2-02) that affects the all frequency references wherever they are 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 a frequency reference entered from the analog input terminals (A1, A2, or A3).
Set as a percentage of the maximum output frequency.
Note: When lower limits are set to both parameters d2-02 and d2-03, the drive uses the greater of those two values as the lower limit.
◆ d3: Jump Frequency
■ d3-01 to d3-04: Jump Frequencies 1, 2, 3 and Jump Frequency Width
To avoid operating at a speed that causes resonance in driven machinery, the drive can be programmed with three
separate Jump frequencies. The Jump frequencies are frequency ranges that the drive will not operate at. 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.
Figure 5.26 shows the relationship between the Jump frequency and the output frequency.
Figure 5.26
Figure 5.26 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 setting more than one Jump frequency, make sure that d3-01 ≥ d3-02 ≥ d3-03.
◆ d4: Frequency Reference Hold Function
■ 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-= A)
• Up/Down function (H1- = 10/11)
No. Parameter Name Setting Range Default
d2-03 Master Speed Reference Lower Limit 0.0 to 110.0% 0.0%
No. Parameter Name Setting Range Default
d3-01 Jump Frequency 1 0.0 to 200.0 Hz 0.0 Hz
d3-02 Jump Frequency 2 0.0 to 200.0 Hz 0.0 Hz
d3-03 Jump Frequency 3 0.0 to 200.0 Hz 0.0 Hz
d3-04 Jump Frequency Width 0.0 to 20.0 Hz 1.0 Hz
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)
SIEP_C710616_35.book 167 ページ ２０１５年１１月３０日 月曜日 午後２時２分
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