YASKAWA F7 Programming Manual page 61

To set up a custom V/f pattern, program the points shown in the diagram below using parameters E1-04 through E1-13. Be
sure that the following condition is true:
E1-09 ≤ E1-07 ≤ E1-06 ≤ E1-11 ≤ E1-04
Max Voltage E1-05
Mid Voltage B E1-12
Base Voltage E1-13
Mid Voltage A E1-08
Min Voltage E1-10
Increasing the voltage in the V/f pattern increases the available motor torque. However, when setting a custom V/f pattern,
increase the voltage gradually while monitoring the motor current, to prevent:
• Drive faults as a result of motor over-excitation
• Motor overheating or excessive vibration
Table 9 V/f Pattern Default Settings for Drive Capacity 0.4~1.5kW for 240V Class
Parameter
Name
No.
E1-03 V/f Pattern Selection
E1-04 Max Output Frequency
E1-05 Max Output Voltage
E1-06 Base Frequency
E1-07 Mid Output Frequency A
E1-08 Mid Output Voltage A
E1-09 Min Output Frequency
E1-10 Mid Output Voltage
E1-11 Mid Output Frequency B
E1-12 Mid Output Voltage B
E1-13 Base Voltage
For 480V class units, the value is twice that of 240V class units.
E1-09 E1-07 E1-06
Min
Mid Base
Freq Freq A
Freq Freq
A
Fig.38 Custom V/f Pattern Programming Curve
Unit
— 0
Hz 50.0 60.0
V 240.0 240.0
Hz 50.0 60.0
V 2.5
V 17.2 17.2
Hz 1.3
V 10.3 10.3
Hz 0
V 0
V 0
Programming 53
Frequency
E1-04
E1-11
Mid Max
Freq B Freq
Factory Setting
1 2 3
60.0 72.0
240.0 240.0
50.0 60.0
3.0 3.0 3.0
17.2 17.2
1.5 1.5 1.5
10.3 10.3
0 0 0
0 0 0
0 0 0
4 5 6
50.0 50.0 60.0
240.0 240.0 240.0
50.0 50.0 60.0
25.0 25.0 30.0
40.2 57.5 40.2
1.3 1.3 1.5
9.2 10.3 9.2
0 0 0
0 0 0
0 0 0
7
60.0
240.0
60.0
30.0
57.5
1.5
10.3
0
0
0