Mitsubishi Electric FR-S500 Series, Instruction Manual

Page: 82 / 222

72
Explanation of functions (parameters)
2.3.2 Maximum and minimum frequency (Pr. 1 , Pr. 2 )
<Setting>
•
Use Pr. 1 to set the upper limit of the output frequency. If the frequency of the
frequency command entered is higher than the setting, the output frequency is
clamped at the maximum frequency.
•
Use Pr. 2 to set the lower limit of the output frequency.
You can clamp the upper and
lower limits of the output
frequency.
Parameter Name Factory Setting Setting Range
1 Maximum frequency 60Hz 0 to 120Hz
2 Minimum frequency 0Hz 0 to 120Hz
REMARKS
When using the potentiometer (frequency setting potentiometer) connected across terminals
2-5 to perform operation above 60Hz, change the Pr. 1 and Pr. 38 (Pr. 39 when using the
potentiometer across terminals 4-5) values.
CAUTION
If the Pr. 2 setting is higher than the Pr. 13 "starting frequency" value, note
that the motor will run at the frequency set in Pr. 2 according to the
acceleration time setting by merely switching the start signal on, without
entry of the command frequency.
♦
Related parameters
♦
•
Starting frequency setting
⇒
Pr. 13 "starting frequency" (refer to page 81)
•
Maximum frequency setting using external potentiometer
⇒
Pr. 30 "extended function display selection" (refer to page 89),
Pr. 38 "frequency setting voltage gain frequency",
Pr. 39 "frequency setting current gain frequency" (refer to page 91)
Output frequency (Hz)
Pr.1
Pr.2
Set frequency
5,10V
(20mA)
0
(4mA)