503 6 606070809010025% ED (or 15 min)40% ED (or 20 min)60% ED (or 40 min)Frequency (Hz)Continuous operationTorque(%)20Figure i.2 Allowable Load Characteristics for a Yaskawa MotorInsulation ToleranceNOTICE:Consider motor voltage tolerance levels and motor insulation in applications with an input voltage of over 440 V or particularlylong wiring distances.High-Speed OperationNOTICE:Problems may occur with the motor bearings and dynamic balance of the machine when operating a motor beyond its rated speed.Contact the motor or machine manufacturer.Torque CharacteristicsTorque characteristics differ compared to operating the motor directly from line power. The user should have a fullunderstanding of the load torque characteristics for the application.Vibration and ShockThe drive allows selection of high carrier PWM control and low carrier PWM. Selecting high carrier PWM can help reducemotor oscillation.Take particular caution when adding a variable speed drive to an application running a motor from line power at a constantspeed. If resonance occurs, install shock-absorbing rubber around the base of the motor and enable the Jump frequency selectionto prevent continuous operation in the resonant frequency range.Audible NoiseThe audible noise of the motor varies based on the carrier frequency setting. However, drive current derating may be required.When using a high carrier frequency, audible noise from the motor is comparable to the motor noise generated when runningfrom line power.n Synchronous Motors• Contact Yaskawa or a Yaskawa agent when planning to use a synchronous motor not endorsed by Yaskawa.• Use a standard induction motor when running multiple synchronous motors simultaneously. A single drive does not havethis capability.• A synchronous motor may rotate slightly in the opposite direction of the Run command at start depending on parametersettings and rotor position.• The amount of generated starting torque differs depending on the control mode and motor type. Set up the motor with thedrive after verifying the starting torque, allowable load characteristics, impact load tolerance, and speed control range.Contact Yaskawa or a Yaskawa agent when planning to use a motor that does not fall within these specifications:• To restart a coasting motor rotating over 200 Hz while in V/f Control, first use the Short Circuit Braking function to bringthe motor to a stop. Short Circuit Braking requires a special braking resistor. Contact Yaskawa or a Yaskawa agent fordetails.• To restart a coasting motor rotating below 200 Hz, use the Speed Search function if the motor cable is not too long. If themotor cable is relatively long, stop the motor using Short Circuit Braking.n Specialized MotorsMulti-Pole MotorThe rated current of a multi-pole motor differs from that of a standard motor, so be sure to check the maximum current whenselecting a drive. Always stop the motor before switching between the number of motor poles. The motor will coast to stop ifa regen overvoltage (ov) fault occurs or if overcurrent (oC) protection is triggered.i.2 General Safety18 YASKAWA ELECTRIC TOEP YAIP1U 01B YASKAWA AC Drive - P1000 Quick Start Guide
