Pwm Carrier Frequency And Soft-Pwm Control - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

Operating procedure
1.
Power ON
Make sure the motor is stopped.
2.
Changing the operation mode
Press to choose the PU operation mode. [PU] indicator turns ON.
3.
Selecting the parameter setting mode
Press to choose the parameter setting mode. (The parameter number read previously appears)
4.
Selecting a parameter
Turn until "
5.
Parameter read
Press . "
6.
Clearing the parameter
Turn until "
" " and "
To continue deleting parameters, repeat steps 5 and 6.
NOTE
• Pr.77 Parameter write selection, Pr.160, Pr.296 Password lock level, Pr.297 Password lock/unlock and Pr.991 PU
contrast adjustment can always be read regardless of the user group setting. (For Pr.991, only when the FR-LU08 or the
FR-PU07 is connected.)
• Pr.77, Pr.160, Pr.172 to Pr.174, Pr.296, and Pr.297 cannot be registered in a user group.
• When Pr.174 is read, "9999" is always displayed. "9999" can be written, but it does not function.
• Pr.172 is disabled if set to a value other than "9999".
Parameters referred to
Pr.15 Jog frequency, Pr.16 Jog acceleration/deceleration
Pr.77 Parameter write selectionpage 328
Pr.296 Password lock level, Pr.297 Password
Pr.550 NET mode operation command source
Pr.551 PU mode operation command source
Pr.991 PU contrast adjustmentpage 322

5.7.18 PWM carrier frequency and Soft-PWM control

The motor sound can be changed.
Pr. Name
72
PWM frequency selection
E600
240 Soft-PWM operation
E601 selection
260 PWM frequency automatic
E602 switchover
*1 The setting range of FR-A820-03160(55K) or lower and FR-A840-01800(55K) or lower
*2 The setting range of FR-A820-03800(75K) or higher and FR-A840-02160(75K) or higher
 Changing the PWM carrier frequency (Pr.72)
• The PWM carrier frequency of the inverter can be changed.
" (Pr.174) appears.
" appears.
" (Pr.3) appears. Press
"are displayed alternately.
timepage 390
lock/unlockpage 331
selectionpage 380
selectionpage 380
Initial
Setting range
value
*1
0 to 15
2
*2
0 to 6, 25
0
1
1
0
1
1
to delete the parameter.
The PWM carrier frequency can be changed. The setting
displayed is in [kHz]. Note that 0 indicates 0.7 kHz, 15 indicates
14.5 kHz, and 25 indicates 2.5 kHz.
(The setting value "25" is for the sine wave filter.)
Soft-PWM is invalid
The soft-PWM is enabled.
PWM carrier frequency automatic reduction function disabled
(for the LD, ND, or HD rating)
PWM carrier frequency automatic reduction function enabled
5.7 (E) Environment setting parameters
Description
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
339