Mitsubishi Electric FR-A700 Technical Manual page 214

2.6.2 Adjustable 5 points V/F [Pr. 71, 100 to 109]
When V/F control has been selected, set [Pr. 71 = 2] and
define five points as shown on the right to perform
operation in the V/F pattern connected by straight lines in
sequence.
For a machine of large static friction coefficient and small
dynamic static friction coefficient, for example, set a V/F
pattern that will increase the voltage only in a low speed
region since such a machine requires large torque at a
start.
When [Pr. 19 Base frequency voltage = 8888, 9999], [Pr. 71 =
2] can not be set. Set the rated voltage value in [Pr. 19] to
set [Pr. 71 = 2].
The five points can be set as desired within the range of
the [Pr. 3 Base frequency], and [Pr. 19 Base frequency voltage].
Note that if you attempt to set the same frequency in any
two of the five points, an outside-of -range error occurs.
The setting of inappropriate V/F values will cause
excessive current, abnormal machine collision or vibration
during acceleration and deceleration.
[Pr. ] Name
71 Applied motor
100 V/F1 (first frequency)
101 V/F1(first frequency voltage)
102 V/F2 (second frequency)
V/F2 (second frequency
103
voltage)
104 V/F3 (third frequency)
V/F3 (third frequency
105
voltage)
106 V/F4 (fourth frequency)
V/F4 (fourth frequency
107
voltage)
108 V/F5 (fifth frequency)
109 V/F5 (fifth frequency voltage)
When [Pr. 71 = 2] is set, [Pr. 47 Second V/F] and [Pr. 113 Third
V/F] will not function.
The electronic thermal relay function calculates as
standard motor.
Adjustable 5 points V/F does not function during Advanced
magnetic flux vector control, Simple magnetic flux vector
control, Real sensorless vector control, vector control.
Initial
Setting Range
Value
0 to 8, 13 to 18,
A700
20, 23, 24, 30, 33,
34, 40, 43, 44, 50,
0
53, 54
0, 1, 2, 20
F700
9999
9999
0 to 400Hz
0V 0 to 1000V
9999
9999
0 to 400Hz
0V 0 to 1000V
9999
9999
0 to 400Hz
0V 0 to 1000V
9999
9999
0 to 400Hz
0V 0 to 1000V
9999
9999
0 to 400Hz
0V 0 to 1000V
248
A700 F700
(A700)(F700)
Voltage
Base frequency
voltage
[ ]
Pr.19
V/F4
V/F3
Torque boost
V/F1
[Pr.0]
V/F2
0
V/F Characteristic
Description
Set 2 for adjustable 5 points V/F control.
No V/F1 setting
Set the V/F1 frequency
Set the V/F1 voltage
No V/F2 setting
Set the V/F2 frequency
Set the V/F2 voltage
No V/F3 setting
Set the V/F3 frequency
Set the V/F3 voltage
No V/F4 setting
Set the V/F4 frequency
Set the V/F4 voltage
No V/F5 setting
Set the V/F5 frequency
Set the V/F5 voltage
PARAMETER
V/F5
Frequency
Base frequency
[Pr.3]