Yaskawa G5HHP Drive - Manual (Page 158)

Basic Operation
6.5.2 V/f Pattern Selection: E1-03
6 - 40
6.5.2 V/f Pattern Selection: E1-03
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The V/f pattern can be set to any of the following:
•
One of 15 preset patterns (settings 0 through E)
•
A custom user-set pattern (setting F)
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The factory setting for E1-03 is “F” (user-defined V/f pattern), but the default contents of this setting
are the same as setting “1.”
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
E1-03 V/f pattern selection x 0 to F -- F Q Q x x
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Selecting a Preset V/f Pattern: E1-03 = “0” through “E”
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Refer to the following table when selecting one of the 15 preset patterns.
Characteristics Applications Setting Specifications
These patterns are for general-purpose
applications
0 50 Hz
Fixed torque
p g p p
applications.
Use these patterns when the load torque
1 60 Hz
Fixed torque Use these patterns when the load torque
is to remain constant for any rotational
speed such as in straight-line convey-
2 60 Hz, Voltage saturation at 50 Hz
speed, such as in straight-line convey-
ors. 3 72 Hz, Voltage saturation at 60 Hz
U th tt h th i
4 50 Hz, cubic
Variable torque
Use these patterns when there is a qua-
dratic or cubic relationship between the
5 50 Hz, quadratic
Variable torque
dratic or cubic relationship between the
rotational speed and load, such as in fans
or pumps
6 60 Hz, cubic
or pumps.
7 60 Hz, quadratic
Select a high starting torque V/f pattern
only in the following cases:
S The wiring distance between the In-
8 50 Hz, low starting torque
High starting
S The wiring distance between the In-
verter and motor is relatively large
(greater than 150 m).
S A large torque is required at startup
9 50 Hz, high starting torque
High starting
torque *
S A large torque is required at startup
(such as heavy axis loads).
S An AC or DC reactor is connected to
the Inverter’s input or output
A 60 Hz, low starting torque
the Inverter’s input or output.
S A motor less than the maximum appli-
cable motor is being used.
b 60 Hz, high starting torque
Hi h d
These patterns are for applications that
f i h
C 90 Hz, Voltage saturation at 60 Hz
High-speed op-
erations
These patterns are for applications that
must rotate at frequencies greater than
60 Hz. A fixed voltage is applied at fre-
d 120 Hz, Voltage saturation at 60 Hz
erations 60 Hz. A fixed voltage is applied at fre-
quencies greater than 60 Hz. E 150 Hz, Voltage saturation at 60 Hz
* Normally it isn’t necessary to use these patterns because starting torque isensured byautomatic
torque boost functions.
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The constant settings for E1-04 through E1-10 will be changed automatically when one of these patterns
is selected.
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The characteristics for these patterns are shown in the diagrams on page 6 - 23.
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Setting a User-defined V/f Pattern: E1-03 = “F”
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Constants E1-04 through E1-10 can be set by the user when E1-03 has been set to “F.”
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Refer to page 6 - 24 for details on setting these constants.
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