Mitsubishi FR-D740-1.5K

45
DRIVE THE MOTOR
3
Before operation
3.3.5 Setting the maximum and minimum output frequency (Pr. 1, Pr. 2)
Motor speed can be limited.
Parameter
Number
Name Initial Value Setting Range Description
1 Maximum frequency
120Hz 0 to 120Hz Set the upper limit of the output frequency.
2 Minimum frequency
0Hz 0 to 120Hz Set the lower limit of the output frequency.
Changing
example
Limit the frequency set by the potentiometer, etc. to 60Hz
maximum.
(Change Pr. 1 Maximum frequency to 60Hz.)
Operation Display
1.
Screen at powering ON
The monitor display appears.
2. Press to choose the PU operation mode.
PU indication is lit.
3. Press to choose the parameter setting
mode.
PRM indication is lit.
(The parameter number read previously appears.)
4. Turn until (Pr. 1) appears.
5. Press to read the currently set value.
" "(120.0Hz (initial value)) appears.
6. Turn to change the set value to
" " (60.00Hz).
7. Press to set.
Flicker ··· Parameter setting complete!!
 Turn to read another parameter.
 Press to show the setting again.
 Press twice to show the next parameter.
REMARKS
 If the set frequency is less than Pr. 2, the output frequency is clamped at Pr. 2 (will not fall below Pr. 2). Note that Pr. 15 Jog
frequency has higher priority than the minimum frequency.
 When the Pr. 1 setting is changed, frequency higher than the Pr. 1 setting can not be set by .
 When performing a high speed operation at 120Hz or more, setting of Pr. 18 High speed maximum frequency is necessary.
( Refer to Chapter 4 of the Instruction Manual (Applied)).
CAUTION
Note that when Pr. 2 is set to any value equal to or more than Pr. 13 Starting frequency, simply turning ON the start signal
will accelerate the motor to the set frequency of Pr.2 according to the set acceleration time even if the command
frequency is not input.
Pr. 2
Output frequency (Hz)
Pr. 1
Pr. 18
Frequency setting
Clamped at the
maximum frequency
Clamped at the
minimum frequency
5, 10V
(20mA)
0
(4mA)