Chapter 5 ParametersVFD-S Series
Frequency | Frequency | |
output | ||
output | ||
frequency | ||
frequency | ||
| ||
motor | motor | |
speed | ||
speed | ||
|
|
|
| Time |
| Time | ||||
operation |
| stops according to |
|
| operation |
| free run to stop |
| |
RUN | decel eration time |
|
| RUN | STOP |
| |||
command | STOP |
|
| command | |||||
ramp to stop and free run to stop
PWM Carrier Frequency Selections | Unit: 1 |
| 115V/230V/460V Series |
Power | 0.25 to 3hp (0.2kW to 2.2kW) |
Setting Range | d3 to d10 kHz |
Factory Setting | d10 kHz |
This parameter determines the PWM carrier frequency of the AC motor drive.
Carrier | Acoustic | Electromagnetic | Heat | Current |
Frequency | Noise | Noise or leakage | Dissipation | Wave |
|
| current |
|
|
3kHz | Significant | Minimal | Minimal | Minimal |
|
|
|
|
10kHz
Minimal
Significant
Significant
Significant
From the table, we see that the PWM carrier frequency has a significant influence on the electromagnetic noise, AC motor drive heat dissipation, and motor acoustic noise.
|
| Factory Setting: d0 |
Settings | d0 | Enable forward/reverse operation |
| d1 | Disable reverse operation |
|
|
|
The parameter determines whether the AC drive can operate in the reverse direction.
Revision August 2006, SE08, SW V2.61 |
