You usually set the V/F curve according to the motor’s allowable loading characteristics. Pay
special attention to the motor’s heat dissipation, dynamic balance, and bearing lubrication when
the loading characteristics exceed the loading limit of the motor.
There is no limit for the voltage setting, but a high voltage at a low frequency may cause motor
damage, overheating, and trigger the stall prevention or the over-current protection; therefore,
use low voltage at low frequency to prevent motor damage or drive error.
The diagram below shows the V/F curve for motor 1. You can use the same V/F curve for motor
2, motor 3, and motor 4. For multi-motor selections, refer to the multi-function input terminal
(Pr.02-01–Pr.02-07) settings 83 and 84.
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