Mitsubishi Electric FR-A700 Series Instruction Manual page 104

Parameter
Name
PWM frequency
72
selection
Soft-PWM
240
operation selection
Analog input
73
selection
Terminal 1 added
compensation
242
amount (terminal 2)
Terminal 1 added
compensation
243
amount (terminal 4)
Override bias
252
Override gain
253
Terminal 4 input
267
selection
Input filter time
74
constant
Speed setting filter 1
822
Torque setting filter 1
826
Speed setting filter 2
832
Torque setting filter 2
836
Analog input offset
849
adjustment
Incre Initial
Range
ments Value
PWM carrier frequency can be changed.
The setting displayed is in [kHz].
Note that 0 indicates 0.7kHz, 15 indicates
14.5kHz, 25 indicates 2.5. (25 is
exclusively for a sine wave filter.)
0 to 15/
The following settings are for real
1 2
0 to 6, 25
sensorless vector control and vector
*
control.
0 to 5: 2kHz, 6 to 9: 6kHz,
10 to 13: 10kHz, 14 to 15: 14kHz
* The setting range differs according to the
0 Soft-PWM invalid
1 1
When Pr. 72 = "0 to 5" ("0 to 4" for the 75K
1
or more), Soft-PWM is valid.
You can select the input specifications of
terminal 2 (0 to 5V, 0 to 10V, 4 to 20mA)
and input specifications of terminal 1 (0 to
±5V, 0 to ±10V). For the 5.5K or more, the
0 to 7, input specifications can be selected when
1 1
10 to 17 the voltage/current input switch is off.
Terminal 2 is always used for current input
when the switch is on, the parameter
needs to be set to current input. Override
and reversible operation can be selected.
Set the ratio of added compensation
0.1% 100% 0 to 100%
amount when terminal 2 is the main speed.
Set the ratio of added compensation
0.1% 75% 0 to 100%
amount when terminal 4 is the main speed.
Set the bias side compensation value of
0.1% 50% 0 to 200%
override function.
Set the gain side compensation value of
0.1% 150% 0 to 200%
override function.
Terminal 4 input
0
4 to 20mA
Terminal 4 input
1
0 to 5V
1 0
Terminal 4 input
2
0 to 10V
The primary delay filter time constant for
1 1 0 to 8 the analog input can be set.
A larger setting results in a larger filter.
Set the time constant of the primary delay
0 to 5s,
0.001s 9999 filter relative to the external speed
9999
command (analog input command).
Set the time constant of the primary delay
0 to 5s,
0.001s 9999 filter relative to the external torque
9999
command (analog input command).
0 to 5s, Second function of Pr. 822 (valid when the
0.001s 9999
9999 RT terminal is on)
0 to 5s, Second function of Pr. 826 (valid when the
0.001s 9999
9999 RT terminal is on)
This function provides speed command by
analog input (terminal 2) with offset and
0.1% 100% 0 to 200%
avoids frequency command to be given
due to noise under 0 speed command.
Description
inverter capacity. (55K or less/75k or more)
For the 5.5K or
more, the input
specifications can
be selected when
the voltage/current
input switch is off.
Set "0" when the
switch is ON.
Parameter List
All
Param Param
param
eter eter
eter
copy clear
clear
: enabled
× : disabled
×
×
3
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