YASKAWA V1000 Series Installation & Start-Up Manual page 353

No. Name
Use d4 parameters to configure the drive frequency reference hold function.
Frequency
d4-01 Reference Hold
Function Selection
Frequency
d4-03
Reference Bias Step
<22>
(Up/Down 2)
Frequency
d4-04
Reference Accel/
<22>
Decel (Up/Down 2)
Frequency
Reference Bias
d4-05
Operation Mode
<22>
Selection
(Up/Down 2)
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
Description
d4: Frequency Reference Hold
0: Disabled
1: Enabled
This parameter is used to hold the last frequency
reference in U1-01 (d1-01) when power is
removed. This function is available when the
multi-function inputs "accel/decel ramp hold" or
"up/down" commands are selected
(H1- = A or 10 and 11).
When set to 0.00 Hz, the bias value is adjusted
according to d4-04. The final accel/decel rate is
0 (cancels Soft-Starter). When greater than 0.0
Hz, the frequency reference bias will follow d4-
03 when the Up 2 or Down 2 commands are
switched on. The acceleration or deceleration
rate is ultimately determined by d4-04.
0: Adjusts the bias value according to the
currently selected accel/decel time.
1: Adjusts the bias value by Accel/Decel Time 4
(C1-07 and C1-08).
0: Holds the bias value when Up/Down 2
reference is on or off.
1: When the Up 2 reference and Down 2
reference are both on or both off, the frequency
reference bias becomes 0. Final reference
accelerates or decelerates at the time selected.
Enabled only when d4-03 = 0.
B.2 Parameter Table
Control
Mode
Range Def. Addr.
O
V/ P
Hex
L
f M
V
0,1 0 A A A 298
0.00 to
0.00
99.99 A A A 2AA —
Hz
Hz
0,1 0 A A A 2AB
0,1 0 A A A 2AC
Pg.
—
—
—
B
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