E6581381
Warning:
When setting the V/F control mode selection parameter (RV) to any number between and , be sure to set at least the following parameters.
H (Motor rated current): See the motor's nameplate.
H
H (Rated rotational speed of motor): See the motor's nameplate. Set also other torque boost parameters (H to H), as required.
1) Constant torque characteristics
Setting of V/F control mode selection RV to (V/F constant)
This is applied to load that requires the same torque at low speeds as at rated speeds.
Base frequency voltage |
|
|
XNX |
|
|
voltage(%) |
| 5 |
Output |
| |
|
| |
XD |
|
|
0 |
| Output frequency (Hz) |
Base frequency | XN |
*To increase the torque further, increase the setting value of the manual torque boost XD.
⇒For more details, see 5.11.
2)Setting for fans and pumps
Setting of V/F control mode selection RV to (variable torque)
This is appropriate for load characteristics of such things as fans, pumps and blowers in which the torque in relation to load rotation speed is proportional to its square.
Base frequency voltage
XNX
XD
voltage(%) |
|
|
|
|
| ||
Output |
|
|
|
|
| ||
0 |
|
|
|
|
|
| Output frequency (Hz) |
|
|
|
|
|
| ||
|
|
|
|
|
| ||
Base frequency |
|
|
|
| |||
|
|
|
|
|
| ||
|
| XN |
|
| |||
|
|
|
| ||||
