Pwm Carrier Frequency And Soft-Pwm Control - Mitsubishi Electric FR-A800 Series Instruction Manual

 Clearing a parameter from a user group (Pr.174)
• To delete Pr.3 from a user group.
Operating procedure
1.
Power ON
Make sure the motor is stopped.
2.
Changing the operation mode
Press
3.
Selecting the parameter setting mode
Press
4.
Selecting a parameter
Turn
5.
Parameter read
Press
6.
Clearing the parameter
Turn
"
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
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 340

5.7.18 PWM carrier frequency and Soft-PWM control

The motor sound can be changed.
Pr.
72
PWM frequency selection
E600
240 Soft-PWM operation
E601 selection
260 PWM frequency automatic
E602 switchover
*1 The setting range of the FR-A820-03160(55K) or lower and the FR-A840-01800(55K) or lower
*2 The setting range of the FR-A820-03800(75K) or higher and the FR-A840-02160(75K) or higher
356
5. PARAMETERS
5.7 (E) Environment setting parameters
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to choose the PU operation mode. [PU] indicator turns ON.
to choose the parameter setting mode. (The parameter number read previously appears)
until " " (Pr.174) appears.
. " " appears.
until " " (Pr.3) appears. Press
" and " "are displayed alternately.
selectionpage 345
lock/unlockpage 348
selectionpage 400
selectionpage 400
Initial
Name
value
2
1
1
search engine
to delete the parameter.
timepage 410
Setting range
The PWM carrier frequency can be changed. The setting value
*1
0 to 15
represents the frequency in kHz. However, "0" indicates 0.7
kHz, "15" indicates 14.5 kHz, and "25" indicates 2.5 kHz.
*2
0 to 6, 25
(The setting value "25" is for the sine wave filter only.)
0 Soft-PWM control disabled.
1 Soft-PWM control enabled.
PWM carrier frequency automatic reduction function disabled
0
(for the LD, ND, or HD rating)
1 PWM carrier frequency automatic reduction function enabled
Description