System parameter group 00
PARAMETER DESCRIPTION 91
5.1.5 Speed display
In “monitoring output frequency”
mode, the screen displays corresponding machine speed.
Parameter
Name
Default
Setting Range
Content
00-08
P.37
Speed display
0.0
0
0: Display output frequency(not mechanical speed)
0.1~5000.0
When 00-09(P.259)=1
1~50000
When 00-09(P.259)=0
00-09
P.259
Speed unit selection
1
X0
Speed display unit is 1
X1
Speed display unit is 0.1
0X
Power accumulation rate unit is 1
1X
Power accumulation rate unit is 0.1
2X
Power accumulation rate unit is 0.01
Speed display
The setting value of 00-08(P.37) is the speed of motor when output frequency is 60Hz.
For example:
1.
If the transmitting belt speed is 950 m/minute when the inverter output frequency is 60Hz, set 00-08(P.37) =
950.
2.
After setting, in the keypad “output frequency monitor mode” , the screen will display the speed of the
transmitting belt.
Note: 1.The machine speed on the screen is the theoretical value calculated proportionately by the inverter output
frequency and the setting value of 00-08(P.37). So there’s minute discrepancy between the displayed machine
speed and the actual one.
2. The value in 00-09 (P. 259) = 0X, 1X, 2X is only readable in communication mode.
5.1.6 PWM carrier frequency
The motor sound can be changed by adjusting PWM carrier frequency properly.
Parameter
Name
Default
Setting Range
Content
00-11
P.72
Carrier frequency
5kHz
1~15 kHz
Frame A/B/C
4kHz
1~9 kHz
Frame D/E
2kHz
1~9 kHz
Frame F/G
2kHz
1~3 kHz
Frame H
00-12
P.31
Soft-PWM carrier
function selection
0
0
Off
1
When 00-11(P.72)< 5, Soft-PWM is on (only apply to V/F
control )
Carrier frequency
The higher the carrier frequency, the lower the motor acoustic noise, but will result in greater leakage current and
larger noise generated by the inverter.
The higher the carrier frequency, the more energy inverter will consume, and temperature will also be higher.
If mechanical resonance occurred in a system, 00-11(P.72) can also be adjusted to lower the vibration.
Note: The setting value of carrier frequency is best to be 8 times larger than the target frequency.
Setting
Setting
