D4: Frequency Reference Hold And Up/Down 2 Function - YASKAWA AC Drive-A1000 Technical Manual

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.
u

d4: Frequency Reference Hold and Up/Down 2 Function

n d4-01: Frequency Reference Hold Function Selection
Determines whether the frequency reference or the frequency bias (Up/Down 2) value is saved when the Stop command is
entered or the power supply is shut down. This parameter is effective when either of the digital input functions listed below
are used:
• Accel/decel ramp hold function (H1-oo= A)
• Up/Down function (H1-oo = 10 and 11)
• Up/Down 2 function (H1-oo = 75 and 76)
No.
d4-01
The operation depends on the function used with parameter d4-01.
Setting 0: Disabled
• Acceleration hold
The hold value will be reset to 0 Hz when the Stop command is entered or the drive power is switched off. The active
frequency reference will be the value the drive uses when it restarts.
• Up/Down
The frequency reference value will be reset to 0 Hz when the Stop command is entered or the drive power is switched off.
The drive will start from 0 Hz when it is restarted.
• Up/Down 2
The frequency bias is not saved when the Stop command is entered, or 5 s after the Up/Down 2 command has been released.
The Up/Down 2 function will start with a bias of 0% when the drive is restarted.
Setting 1: Enabled
• Acceleration hold
The last hold value will be saved when the Run command or the drive power is switched off and the drive will use the saved
value as the frequency reference when it restarts. The multi-function input terminal set for "Accel/decel ramp hold" (H1-
oo = A) must be continuously enabled or the hold value will be cleared when the power is switched on.
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Output
frequency
Jump
Frequency 3
d3-03
Figure 5.43 Jump Frequency Operation
Parameter Name
Frequency Reference Hold Function Selection
Frequency
reference
decreases
Frequency
Width (d3-04)
Jump
Frequency
Width (d3-04)
Jump
Frequency
Width (d3-04)
Jump Jump
Frequency 2 Frequency 1
d3-02 d3-01
5.4 d: Reference Settings
Frequency
reference
increases
Jump
Frequency
reference
Setting Range
0, 1
Default
0
5
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