Output Frequency Range (Pr. 1, Pr. 2, Pr. 18) - Mitsubishi Electric FR-E540-0.4K-EC Instruction Manual

4.2.2 Output frequency range (Pr. 1, Pr. 2, Pr. 18)

Pr. 1 "maximum frequency"
Pr. 2 "minimum frequency"
Pr. 18 "high-speed maximum frequency"
Used to clamp the upper and lower limits of the
output frequency. Used for high-speed operation at or over 120Hz.
z Can be used to set the upper and lower limits of motor speed.
Parameter
Number
1
2
18
z
Output frequency range (Pr. 1, Pr. 2, Pr. 18
<Setting>
y 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.
To perform operation over 120Hz, set the upper limit of the output frequency in
Pr. 18.
(When the Pr. 18 value is set, Pr. 1 automatically changes to the frequency in
Pr. 18. Also, when the Pr. 1 value is set, Pr. 18 automatically changes to the
frequency in Pr. 1.)
y Use Pr. 2 to set the lower limit of the output frequency.
Note: When the potentiometer (frequency setting potentiometer) connected across
terminals 2-5 is used for operation beyond 50Hz, change the value of Pr. 38
(or Pr. 39 for use of the potentiometer connected across terminals 4-5). If the
Pr. 1 or Pr. 18 value is only changed, the motor cannot run beyond 50Hz.
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.
Factory Setting
Setting Range
120Hz 0 to 120Hz
0Hz 0 to 120Hz
120 to
120Hz
400Hz
Pr. 13 "starting frequency"
Pr. 38 "frequency at 5V (10V) input"
Pr. 39 "frequency at 20m A input"
Pr. 79 "operation m ode selection"
Output frequency
(Hz)
Pr.1
Pr.18
Pr.2
(4mA)
CAUTION
71
PARAMETERS
Related parameters
Frequency setting
0 5,10V
(20mA)