Download  Print this page

Pwm Carrier Frequency (pr. 72, Pr. 240) - Mitsubishi Electric FR-A500 Instruction Manual

Transistorized inverter.
Hide thumbs

Advertisement

4.2.29 PWM carrier frequency (Pr. 72, Pr. 240)

Pr. 72 "PWM frequency selection"
Pr. 240 "Soft-PWM setting"
You can change the motor tone.
• By parameter setting, you can select Soft-PWM control which changes the motor tone.
• Soft-PWM control changes motor noise from a metallic tone into an unoffending complex tone.
Parameter
Factory Setting Setting Range
72
2
240
1
<Setting>
• Refer to the following list and set the parameters:
Parameter
Pr. 72 Setting
Number
72
0 to 15
0
240
1
Note: 1. A reduced PWM carrier frequency will decrease inverter-generated noise and leakage current but
increase motor noise.
2. Performing continuous operation at 75% or more of the rated current may automatically decrease
carrier frequency even high carrier frequency is set and generate motor noise according to the
carrier frequency, but it is not a failure.
0 to 15
0: 0.7kHz, 15: 14.5kHz
0, 1
1: Soft-PWM valid
PWM carrier frequency can be changed.
The setting displayed is in [kHz]. Note that 0 indicates 0.7kHz and 15 indicates 14.5kHz.
Soft-PWM Invalid
When any of "0 to 5" is set in Pr. 72, Soft-PWM is made valid.
104
Remarks
Description
PARAMETERS

Advertisement

Table of Contents

   Related Content for Mitsubishi Electric FR-A500

Comments to this Manuals

Symbols: 0
Latest comments:
  • Rajesh yadav Nov 23, 2017 01:03:
    electrical controling conction manual
  • TAtang Jan 03, 2017 11:22:
    Jalan sebentar terus muncul E,7 errlor
  • THAI Sep 28, 2015 08:47:
    MANUAL INVERTER MITSUBISHI a100 .thank you very much
  • sandeep Feb 15, 2014 09:20:
    good manual and it is very good to understand the contant of inverter and i lernt many things in this manual