Chapter 4 Parameters
VFD-EL-W
4-39
Example uses are blowers, punching machines, centrifuges and pumps.
RUN
STOP
RUN
STOP
Frequency
Frequency
Time
Time
output
frequency
output
frequency
motor
speed
motor
speed
operation
command
operation
command
stops according to
decel eration time
free run to stop
ramp to stop and free run to stop
EF
Frequency
Frequency
frequency output
motor
speed
EF
operation
command
stops according to
decel eration time
When Pr.02.02 is set to 2 or 3
frequency
output
free run to stop
operation
command
When Pr.02.02 is set to 0 or 1
motor
speed
02.03
PWM Carrier Frequency Selection
Unit: 1
Default: 8
Settings
2–12 kHz
Determines the PWM carrier frequency of the AC motor drive.
2kHz
8kHz
12kHz
Carrier
Frequency
Acoustic
Noise
Electromagnetic
Noise or leakage
current
Heat
Dissipation
Current
Wave
Significant
Minimal
Significant
Minimal
Minimal
Significant
Minimal
Significant
From the table, you can see that the PWM carrier frequency has a significant influence on the electromagnetic
noise, AC motor drive heat dissipation, and motor acoustic noise. The PWM carrier frequency is decreased
automatically according to the ambient temperature and output current of the AC motor drives. It is used to
prevent the AC motor drive from overheating and thus extend the IGBT’s life. Increasing the PWM carrier
frequency may reduce the noise of motor operation, but interference measures have to be taken for the
consideration of overall wiring.
Содержание VFD-EL-W Series
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Страница 21: ...Chapter 1 Introduction VFD EL W 1 14 This page intentionally left blank ...
Страница 34: ...Chapter 2 Installation and Wiring VFD EL W 2 13 This page intentionally left blank ...
Страница 42: ...Chapter 3 Keypad and Start up VFD EL W 3 8 This page intentionally left blank ...
Страница 150: ...Chapter 4 Parameters VFD EL W 4 108 This page intentionally left blank ...
Страница 152: ...Chapter 5 Troubleshooting VFD EL W 5 2 5 1 Over Current oc ...
Страница 153: ...Chapter 5 Troubleshooting VFD EL W 5 3 5 2 Over Voltage ov ...
Страница 154: ...Chapter 5 Troubleshooting VFD EL W 5 4 5 3 Low Voltage Lv ...
Страница 155: ...Chapter 5 Troubleshooting VFD EL W 5 5 5 4 Overheat oH1 ...
Страница 156: ...Chapter 5 Troubleshooting VFD EL W 5 6 5 5 Overload oL ...
Страница 157: ...Chapter 5 Troubleshooting VFD EL W 5 7 5 6 Keypad Display is Abnormal 5 7 Phase Loss PHL ...
Страница 158: ...Chapter 5 Troubleshooting VFD EL W 5 8 5 8 Motor Does Not Run ...
Страница 159: ...Chapter 5 Troubleshooting VFD EL W 5 9 5 9 Motor Speed Cannot be Changed ...
Страница 160: ...Chapter 5 Troubleshooting VFD EL W 5 10 5 10 Motor Stalls During Acceleration 5 11 The Motor Does Not Run as Expected ...
Страница 163: ...Chapter 5 Troubleshooting VFD EL W 5 13 This page intentionally left blank ...
Страница 173: ...Chapter 6 Fault Code Information and Maintenance VFD EL W 6 10 This page intentionally left blank ...
Страница 179: ...Appendix A Specifications VFD EL W A 6 This page intentionally left blank ...
Страница 186: ...Appendix B Accessories VFD EL W B 7 B 3 1 3 Operation Flow Chart Write parameters failure Write parameters success ...
Страница 190: ...Appendix B Accessories VFD EL W B 11 3 Replace the top cover to complete the cooling fan installation ...
Страница 197: ...Appendix C How to Select the Right AC Motor Drive VFD EL W C 7 This page intentionally left blank ...