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E6580757
E-15
5
1) Constant torque characteristics (general method of use)
Setting of V/F control mode selection to (V/F constant)
This is applied to loads with equipment like conveyors and cranes that require the same torque at low
speeds as at rated speeds.
Base frequency voltage
Base frequency
Output frequency (Hz)
Output voltage (%)
To increase the torque further, increase the setting value of the manual torque boost .
⇒ For more details, see 5.13.
2) Setting for fans and pumps
Setting of V/F control selection 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
Base frequency
Output frequency (Hz)
Output voltage (%)