Setting the V/f Pattern
Choose the V/f pattern that meets the application demands from the table below. Set the correct value to E1-03. The V/f
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.
Table 5.16 Predefined V/f Patterns
Setting
Specification
Characteristic
Application
0
50 Hz
Constant torque
For general purpose applications. Torque remains
constant regardless of changes to speed.
1
60 Hz
(default setting)
2
60 Hz (with 50 Hz base)
3
72 Hz (with 60 Hz base)
4
50 Hz, Heavy Duty 2
Derated torque
For fans, pumps, and other applications that require
torque derating relative to the load.
5
50 Hz, Heavy Duty 1
6
60 Hz, Heavy Duty 1
7
60 Hz, Heavy Duty 2
8
50 Hz, mid starting torque
High starting torque
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
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)
Constant output
When operating at greater than 60 Hz the output
voltage will be constant.
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 for 400 V class drives.
Predefined V/f Patterns for 0.1 to 3.7 kW Drives
Table 5.17 Constant Torque Characteristics, Settings 0 to 3
Setting = 0
50 Hz
Setting = 1
60 Hz
(default)
Setting = 2
60 Hz
Setting = 3
72 Hz
0
12
200
1.3 2.5
50
16
Voltage (V)
Frequency (Hz)
0
12
16
200
1.5 3
60
Voltage (V)
Frequency (Hz)
0
12
16
200
1.5 3
60
50
Voltage (V)
Frequency (Hz)
0
12
16
200
1.5 3
72
60
Voltage (V)
Frequency (Hz)
Table 5.18 Derated Torque Characteristics, Settings 4 to 7
Setting = 4
50 Hz
Setting = 5
50 Hz
Setting = 6
60 Hz
Setting = 7
60 Hz
0
8
200
1.3
25
50
35
V
oltage (V)
Frequency (Hz)
0
9
200
1.3
25
50
50
Voltage (V)
Frequency (Hz)
0
8
200
1.5
30
60
35
Voltage (V)
Frequency (Hz)
0
9
200
1.5
30
60
50
Voltage (V)
Frequency (Hz)
5.5 E: Motor Parameters
170
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual