Справочник Пользователя для Mitsubishi Electronics FR-A500

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.

Can be used to set the upper and lower limits of motor speed.

<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.

• 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, setting the Pr. 1

value automatically changes the Pr. 18 value to the frequency in Pr. 1.)

• Use Pr. 2 to set the lower limit of the output frequency.

Parameter

Number

Factory Setting

Setting Range

120Hz

0 to 120Hz

0Hz

0 to 120Hz

120Hz

120 to 400Hz

Note: When the frequency setting analog signal is used to run the motor beyond 60Hz, change the Pr. 903

and Pr. 905 values. If Pr. 1 or Pr. 18 is only changed, the motor cannot run beyond 60Hz.

CAUTION

When the Pr. 2 setting is higher than the Pr. 13 "starting frequency" value, note that the

motor will run at the preset frequency according to the acceleration time setting by

merely switching the start signal on, even if the command frequency has not been enterd.

Related parameters

Pr. 13 "starting frequency"

Pr. 903 "frequency setting voltage gain"

Pr. 905 "frequency setting current gain"

Pr.1
Pr.18

Pr.2

5,10V

Frequency setting

utput frequency (Hz)

(20mA)

(4mA)