Yaskawa iQpump Micro Quick Start - Manual (Page 35)

Transporting the Drive
NOTICE: Never steam clean the drive. During transport, keep the drive from coming into contact with salts, fluorine, bromine, phthalate
ester, and other such harmful chemicals.
u Motor Application Precautions
n Standard Induction Motors
Low Speed Range
The cooling fan of a standard motor is usually designed to sufficiently cool the motor at the rated speed. As the self-cooling
capability of such a motor reduces with the speed, applying full torque at low speed will possibly damage the motor. To prevent
motor damage from overheat, reduce the load torque as the motor slows. Figure i.2 shows the allowable load characteristics
for a Yaskawa standard motor. A motor designed specifically for operation with a drive should be used when 100% continuous
torque is needed at low speeds.
50
3 6 60
60
70
80
90
100
25% ED (or 15 min)
40% ED (or 20 min)
60% ED (or 40 min)
Frequency (Hz)
Continuous operation
Torque
(%)
20
Figure i.2 Allowable Load Characteristics for a Yaskawa Motor
Insulation Tolerance
NOTICE: Consider motor voltage tolerance levels and motor insulation in applications with an input voltage of over 440 V or particularly
long wiring distances.
High-Speed Operation
NOTICE: 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 Characteristics
Torque characteristics differ compared to operating the motor directly from line power. The user should have a full
understanding of the load torque characteristics for the application.
Vibration and Shock
The drive allows selection of high carrier PWM control and low carrier PWM. Selecting high carrier PWM can help reduce
motor 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 constant
speed. If resonance occurs, use shock absorbing mounts to the motor base and enable the Jump frequency selection to prevent
continuous operation in the resonant frequency range.
Audible Noise
The 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 running
from line power.
n Specialized Motors
Multi-Pole Motor
Because the rated current will differ from a standard motor, be sure to check the maximum current when selecting a drive.
Always stop the motor before switching between the number of motor poles. If a regen overvoltage (oV) fault occurs or if
overcurrent protection (oC) is triggered, the motor will coast to stop.
i.1 Preface
YASKAWA TOEP YAIQPM 02B YASKAWA AC Drive - iQpump Micro Quick Start Guide 35