YASKAWA A1000 Technical Manual page 100

4.6 Basic Drive Setup Adjustments
n E1-03: V/f Pattern Selection
Selects the V/f pattern for the drive and motor from 15 predefined patterns or creates a custom V/f pattern.
No.
E1-03
<1> Settings 0 through E are not available when A1-02 = 2, 3, 5, 6, or 7.
<2> Parameter is not reset to the default value when the drive is initialized using A1-03.
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. Drive initialization does not reset parameter E1-03.
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.
Predefined V/f Patterns for models CIMR-Ao2A0004 to 2A0021, CIMR-Ao4A0002 to 4A0011,
and CIMR-Ao5A0003 to 5A0009
The values in the following graphs are specific to 200 V class drives. Double the values for 400 V class drives. Multiply the
values by 2.875 for 600 V drives.
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)
100
Parameter Name
V/f Pattern Selection
Table 4.12 Predefined V/f Patterns
50 Hz
60 Hz
Table 4.13 Constant Torque Characteristics, Settings 0 to 3
Setting = 1
200
15
9
0 1.5 3
Frequency (Hz)
Table 4.14 Derated Torque Characteristics, Settings 4 to 7
Setting = 5
200
50
9
0 1.3 25
Frequency (Hz)
Characteristic
For general purpose applications. Torque remains constant
Constant torque
regardless of changes to speed.
For fans, pumps, and other applications where the required
Variable torque
torque changes as a function of the speed.
Select high starting torque when:
• Wiring between the drive and motor exceeds 150 m.
High starting torque
• A large amount of starting torque is required.
• An AC reactor is installed.
Output voltage is constant when operating at greater than
Constant output
60 Hz.
60 Hz Setting = 2
200
15
9
60
0 1.5 3
50 Hz Setting = 6
200
35
8
50 0 1.5
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide
Setting Range
<1>
0 to F
Application
60 Hz Setting = 3
200
50 60
Frequency (Hz)
60 Hz Setting = 7
30 60
Frequency (Hz)
Default
<2>
F
72 Hz
15
9
0 1.5 3 60 72
Frequency (Hz)
60 Hz
200
50
9
0 1.5 30 60
Frequency (Hz)