Limiting The Maximum And Minimum Output Frequency (Pr. 1, Pr. 2) - Mitsubishi Electric FR-F720P-0.75K Instruction Manual

Limiting the maximum and minimum
output frequency (Pr. 1, Pr. 2)
5.3

Limiting the maximum and minimum output frequency (Pr. 1, Pr. 2)

Parameter
Name
Number
1 Maximum frequency
2 Minimum frequency
* Performing IPM parameter initialization changes the settings. (Refer to page 43)
Changing
Limit the frequency set by the potentiometer, etc. to
60Hz maximum.
example
(Set "60"Hz in Pr. 1 Maximum frequency.)
1.
Screen at power-ON
The monitor display appears.
2.Operation mode setting
Press
mode.
3.
Press
setting mode.
4.
5.
Press
"
6.
Turn
value "
7.
Press
REMARKS
· The output frequency is clamped by the Pr. 2 setting even if the set frequency is lower than the Pr. 2 setting (The frequency will
not decrease to the Pr. 2 setting.)
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 cannot be set by
· When performing a high speed operation at 120Hz or more, setting of Pr. 18 High speed maximum frequency is necessary. Even if
a value higher than the maximum frequency (refer to page 45) is set in Pr.18 under IPM motor control, the high speed maximum
frequency is limited to the maximum motor frequency. (Refer to Chapter 4 of
If the Pr. 2 setting is higher than the Pr. 13 Starting frequency value, note that the motor will run at the set
frequency according to the acceleration time setting by merely switching the start signal ON, without entry of
the command frequency.
74
Initial Value
55K or lower
75K or higher
0Hz
Operation
to choose the PU operation
to choose the parameter
Pr. 1) appears.
to read the present set value.
"(initial value) appears.
to change it to the set
".
to set.
· By turning , you can read another parameter.
· Press to show the setting again.
· Press twice to show the next parameter.
CAUTION
Setting
Range
120Hz*
Set the upper limit of the output
0 to 120Hz
frequency.
60Hz*
0 to 120Hz Set the lower limit of the output frequency.
Output frequency
(Hz)
Pr.1
Pr.18
Pr.2
Clamped at the 0
minimum frequency (4mA)
Display
PU indicator is lit.
The parameter
number read
previously appears.
Flicker ··· Parameter setting complete!!
the Instruction Manual (Applied).)
Description
Clamped at the
maximum frequency
Frequency setting
5, 10V
(20mA)
.