MITSUBISHI ELECTRIC FR-S520 - Manual (Page 68)

59
2
2
.3.2 Maximum and minimum frequency
You can clamp the upper and
lower limits of the output
frequency.
Output frequency (Hz)
Pr.1
Pr.2
Set frequency
5,10V
(20mA)
0
(4mA)
Parameter Name
Factory Setting
<EC version>
Setting Range
1 Maximum frequency 60Hz <50Hz> 0 to 120Hz
2 Minimum frequency 0Hz 0 to 120Hz
<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.
REMARKS
When using the potentiometer (frequency setting potentiometer) connected across
terminals 2-5 to perform operation above 60Hz <50Hz>, change the Pr. 1 and Pr. 38
(Pr. 39 when using the potentiometer across terminals 4-5) values.
CAUTION
When the Pr. 2 setting is higher than the Pr. 13 "starting frequency" value, note
that the motor will run at the set frequency by merely switching the start signal
on, without entering the command frequency.
♦ ♦ ♦ ♦
Related parameters
♦ ♦ ♦ ♦
Starting frequency setting
⇒
Pr. 13 "starting frequency" (refer to page 65)
Maximum frequency setting using external potentiometer
⇒
Pr. 30 "extended function display selection" (refer to page 72), Pr. 38 "frequency setting
voltage gain frequency", Pr. 39 "frequency setting current gain frequency" (refer to page 74)
2
.3.3 Base frequency, Base frequency voltage
Used to adjust the inverter
outputs (voltage, frequency) to
the motor rating.
Pr.19
Ou
tp
ut
v
o
lt
ag
e
Output
frequency (Hz)
Pr.3
Pr.47