YASKAWA iQpump1000 Installation & Start?up Manual

Contents

u Motor Application Precautionsn Standard Induction MotorsInsulation 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 (drive current derating may be required).Take particular caution when adding a variable speed drive to an application running a motor from line power at a constantspeed. If resonance occurs, use shock absorbing mounts to the motor base and enable the Jump frequency selection to preventcontinuous 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.Specialized MotorsSubmersible MotorThe rated current of a submersible motor is greater than that of a standard motor, so select the drive accordingly. Use a motorcable large enough to avoid decreasing the maximum torque level from voltage drop caused by a long motor cable.Explosion-Proof MotorThe motor and the drive must be tested together to be certified as explosion-proof. The drive is not designed for explosion-proof areas.Geared MotorMake sure that the gear and the lubricant are rated for the desired speed range to avoid gear damage when operating at lowspeeds or very high speeds. Consult with the manufacturer for applications that require operation outside the rated speed rangeof the motor or gear box.Single-Phase MotorVariable speed drives are not designed to operate with single phase motors. Using capacitors to start the motor causes a high-frequency current to flow to the capacitors and can damage the capacitors. A split-phase start or a repulsion start can burn outthe starter coils because the internal centrifugal switch is not activated. The drive is for use with three-phase motors only.n Notes on Power Transmission MachineryInstalling an AC drive in machinery that was previously connected directly to the power supply will allow the machine tooperate at variable speeds. Continuous operation outside of the rated speeds can wear out lubrication material in gear boxesand other power transmission parts. Make sure that lubrication is sufficient within the entire speed range to avoid machinedamage. Note that operation above the rated speed can increase the noise generated by the machine.i.1 PrefaceYASKAWA TOEP YAIP1W 02E YASKAWA AC Drive - iQpump1000 Installation & Start-up Guide 9