YASKAWA A1000 Series Quick Start Manual page 76

4 Start-Up Programming & Operation
E1-03: V/f Pattern Selection
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The user can select the V/f pattern for the drive and motor from 15 predefined patterns, or create a custom V/f pattern.
No.
E1-03
<1> Parameter setting value is not reset to the default value during drive initialization (A1-03).
<2> Settings 0 through E are not available when using any of the vector control modes.
Setting a Predefined V/f Pattern (Setting 0 to E)
Choose the V/f pattern that best meets the application demands from the table below. These settings are available only in
V/f Control modes. Set the correct value to E1-03. Parameters E1-04 to E1-13 can only be monitored, not changed.
Note: 1. Setting an improper V/f pattern may result in low motor torque or increased current due to overexcitation.
2. Parameter E1-03 is not reset when the drive is initialized.
Setting Specification
0
1
2 60 Hz (with 50 Hz base)
3 72 Hz (with 60 Hz base)
4 50 Hz, Heavy Duty 2
5 50 Hz, Heavy Duty 1
6 50 Hz, Heavy Duty 1
7 50 Hz, Heavy Duty 2
8 50 Hz, mid starting torque
9 50 Hz, high starting torque
A 60 Hz, mid starting torque
B 60 Hz, high starting torque
C 90 Hz (with 60 Hz base)
D 120 Hz (with 60 Hz base)
E 180 Hz (with 60 Hz base)
The following tables show details on predefined V/f patterns.
The following graphs are for 200 V class drives. Double the values when using a 400 V class drive.
Predefined V/f Patterns for models CIMR-A 2A0004 to 0021 and CIMR-A 4A0002 to 0011
Setting = 0 50 Hz
200
15
9
0 1.3 2.5 50
Frequency (Hz)
Setting = 4 50 Hz
200
35
8
0 1.3 25 50
Frequency (Hz)
76
Parameter Name
V/f Pattern Selection
Table 27 Predefined V/f Patterns
50 Hz
60 Hz
Table 28 Constant Torque Characteristics, Settings 0 to 3
Setting = 1
200
15
9
0 1.5 3
Frequency (Hz)
Table 29 Derated Torque Characteristics, Settings 4 to 7
Setting = 5
200
50
9
0 1.3 25
Frequency (Hz)
Characteristic
Constant torque
Derated torque
High starting torque
Constant output
60 Hz Setting = 2
200
15
9
60 0 1.5 3
Frequency (Hz)
50 Hz Setting = 6
200
35
8
50 0 1.5
Frequency (Hz)
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide
Setting Range
0 to F
<1>
Application
For general purpose applications. Torque remains
constant regardless of changes to speed.
For fans, pumps, and other applications that require
torque derating relative to the load.
Select high starting torque when:
• Wiring between the drive and motor exceeds 150 m
• A large amount of starting torque is required
• An AC reactor is installed
Output voltage is constant when operating at greater
than 60 Hz.
60 Hz Setting = 3
200
15
50 60
60 Hz Setting = 7
200
30 60
Default
F
<2>
72 Hz
9
0 1.5 3 60 72
Frequency (Hz)
60 Hz
50
9
0 1.5 30 60
Frequency (Hz)