Mitsubishi Electric FR-A700 EC, Инструкция по эксплуатации

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Parameter Set V/f pattern
FR-A700 EC 6 - 181
6.9.4 Adjustable 5 points V/f (Pr. 71, Pr. 100 bis Pr. 109)
A dedicated V/f pattern can be made by freely setting the V/f characteristic between a start-up
and the base frequency and base voltage under V/f control (frequency voltage/frequency).
The torque pattern that is optimum for the machine’s characteristic can be set.
Any V/f characteristic can be provided by presetting the parameters of V/f1 (first frequency volt-
age/first frequency) to V/f5.
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 range since such a
machine requires large torque at a start.
Pr.
No.
Name
Initial
Value
Setting Range Description Parameters referred to
Refer to
Section
71
Applied motor 0
0–8/13–18/
20/23/24/30/
33/34/40/43/
44/50/53/54
Set "2" for adjustable 5 points V/f
control.
3
19
12
113
47
60
71
Base frequency
Base frequency
voltage
DC injection brake
operation voltage
Third V/f (base
frequency)
Second V/f
(base frequency)
Energy saving
control selection
Applied motor
Advanced mag-
netic flux vector
control
Real sensorless
vector control 6.9.1
6.9.1
6.13.1
6.9.1
6.9.1
6.18.1
6.12.2
6.2.2
6.2.2
100
V/f1 (first frequency) 9999 0–400Hz/9999
Set each points (frequency, volt-
age) of V/f pattern.
9999: No V/f setting
101
V/f1 (first frequency voltage) 0V 0–1000V/9999
102
V/f2 (second frequency) 9999 0–400Hz/9999
103
V/f2 (second frequency voltage) 0V 0–1000V/9999
104
V/f3 (third frequency) 9999 0–400Hz/9999
105
V/f3 (third frequency voltage) 0V 0–1000V/9999
106
V/f4 (fourth frequency) 9999 0–400Hz/9999
107
V/f4 (fourth frequency voltage) 0V 0–1000V/9999
108
V/f5 (fifth frequency) 9999 0–400Hz/9999
109
V/f5 (fifth frequency voltage) 0V 0–1000V/9999
I001126E
Fig. 6-64: V/f characteristic
V/F V/F V/F
V/f1
V/f2
V/f3
V/f4
V/f5
Base frequency voltage
Pr. 19
Base frequency Pr. 3
Torque boost
Pr. 0
Frequency
Voltage