Setting Output Voltage (V/F Control) - Mitsubishi Electric FR-A700 Technical Manual

2.6 Setting output voltage (V/F control)

2.6.1 V/F pattern and torque boost [Pr. 0, 3, 14, 19, 46, 47, 112
The inverter controls not only the output frequency but also
the output voltage. The relationship between the output
frequency and voltage is as follows.
[Pr. 14] allows the load pattern to be selected between a
linear ramp (for constant torque load) and a square
curve (for variable torque load) for the ratio of the output
voltage to the output frequency at not more than the
base frequency.
When the base frequency is reached, the output voltage
is maximum and is almost equal to the input power
supply voltage. At not less than the base frequency, the
output voltage is kept constant. [Pr. 19] allows the setting
of the output voltage at not less than the base
frequency. Note that the voltage output is less than the
power supply voltage.
[Pr. ] Name
14 Load pattern selection
3 V/F (base frequency)
47 Second V/F (base frequency)
113 Third V/F (base frequency)
19 Base frequency voltage
0 Torque boost
46 Second torque boost
112 Third torque boost
(*[Pr. 112
Initial Value
0
A700 E700 D700
1
F700
60Hz
9999
9999
9999
F700
A700 E700 D700
0.75K
0.75K or less 6%
1.5K to 3.7K
1.5K to 3.7K 4%
5.5K, 7.5K
5.5K, 7.5K 3%
11K to 37K
11K to 55K 2%
45K, 55K
75K or more 1%
75K or more
9999
9999
Pr. 113] are not available for
,
When power supply voltage varies, the output voltage
varies according to the power supply voltage. When a
value other than 8888 and 9999 is set to [Pr.19 Base
frequency voltage], output voltage is limited to within the
set voltage.
Set the base frequency in [Pr. 3] .
Set the output voltage at the output frequency of 0 in [Pr.
0 Torque boost] to increase/decrease the motor starting
torque.
% indicated for the [Pr. 0 Torque boost], assumes that the
output voltage (
frequency is 100%.
When the advanced magnetic flux vector control, Simple
magnetic flux vector control, Real sensorless vector
control, and vector control are selected, [Pr. 0, Pr. 3, Pr.
14, Pr. 19, Pr. 46, Pr. 47, Pr. 112, Pr. 113] are invalid.
Setting Range
0 For constant torque load
1 For variable-torque load
For constant torque elevators
2
(at reverse rotation boost 0%)
For constant torque elevators
3
(at forward rotation boost 0%)
When the RT signal is ON
............For constant torque load
4 When the RT signal is OFF
............For constant torque elevators
(at reverse rotation boost 0%)
When the RT signal is ON
............For constant torque load
5 When the RT signal is OFF
............For constant torque elevators
(at forward rotation boost 0%)
0 to 400Hz
,
0 to 400Hz 9999
0 to 400Hz , 9999
, ,
0 to 1000V 8888 9999
6%
4%
0 to 30%
3%
2%
1.5%
1%
0 to 30%, 9999
0 to 30%, 9999
244
PARAMETER
* * common
, 113 ]
(common)
F700 E700
power supply voltage) of the base
Available Inverters
A700 F700
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D700
E700
D700
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