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7.5.3 Reference Constants: d
Advanced Operation
7 - 58
d3-04
d3-03
d3-02
d3-01
Internal frequency reference
Set frequency reference
Dotted lines show operation during
acceleration/deceleration.
Fig 7.31
Setting Prohibited Frequencies
J
Hold Reference Memory Selection: d4-01
D
Constant d4-01 is enabled by making either of the following settings for the multi-function inputs
(H1-01 to H1-06).
•
Acceleration/deceleration ramp hold (setting: A)
•
Up command (setting: 10)/down command (setting: 11)
D
When hold status is established by these external signals, specify whether or not the output frequency
is to be retained.
D
When this function is enabled, operation is re-started after power-up using the frequency reference val-
ue that was retained.
User
Change
during
Setting
Factory
Valid Access Levels
User
Constant
Number
Name
g
during
Opera-
tion
Setting
Range
Unit Factory
Setting
V/f
Control
V/f with
PG
Open
Loop
Vector
Flux
Vector
d4-01
Frequency reference
hold function selec-
tion
×
0, 1
−
0
A
A
A
A
D
Settings
Setting
Description
0
Disabled. Restart after operation stoppage or power-up begins at zero.
1
Enabled. Restart after operation stoppage or power-up begins at the held frequency reference.
D
For information regarding the acceleration/deceleration stop (hold) command and the up/down com-
mand, refer to the description of
Multi-function Inputs (H1)
.
J
Trim Control Level: d4-02
D
The trim control level is valid when the trim control increase command (setting: 1C) or trim control
decrease command (setting: 1D) is set for a multi-function input (H1-01 to H1-06).
D
If the trim control increase command is ON when a frequency reference is input on the analog input,
the trim control level will be added to the analog frequency reference and then output as the output
frequency. If the trim control decrease command is ON, the frequency reference will be decreased by
the trim control level.
User
Change
during
Setting
Factory
Valid Access Levels
User
Constant
Number
Name
g
during
Opera-
tion
Setting
Range
Unit Factory
Setting
V/f
Control
V/f with
PG
Open
Loop
Vector
Flux
Vector
d4-02
+
−
Speed limits
×
0 to 100
%
25
A
A
A
A
D
Set the trim control level as a percentage of the maximum output frequency.
D
If the frequency reference minus the trim control level is less than zero, the output frequency will be
zero.
D
Refer to the description of
Multi-function Inputs (H1)
for details on the trim control increase and trim
control decrease commands.
7
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