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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
Tables 5 and 6 are for 240V class units only. For 480V class units, multiply the voltage values by 2.
Table 6 V/f Pattern Default Settings for Drive Capacity 0.5 to 2HP 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.
E1-07 E1-06
E1-09
Min
Mid
Base
Freq
Freq A
Freq
Freq
A
Fig. 29 Custom V/f Pattern Programming Curve
Unit
—
0
Hz
50.0
V
240.0
Hz
50.0
V
2.5
V
17.2
Hz
1.3
V
10.3
Hz
0
V
0
V
0
Programming 40
Frequency
E1-04
E1-11
Mid
Max
Freq B
Freq
Factory Setting
1
2
3
60.0
60.0
72.0
240.0
240.0
240.0
60.0
50.0
60.0
3.0
3.0
3.0
17.2
17.2
17.2
1.5
1.5
1.5
10.3
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
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