Yaskawa iQpump Micro Manuel d'utilisateur télécharger pdf (Page 41)

Acceleration/Deceleration Times

Acceleration and deceleration times are affected by the amount of torque generated by the motor, the load torque, and the

inertia moment. Set a longer accel/decel time when Stall Prevention is enabled. The accel/decel times are lengthened for as

long as the Stall Prevention function is in operation.

General Handling

Wiring Check

NOTICE: Do not connect power supply lines to output terminals U/T1, V/T2, or W/T3. Failure to comply will destroy the drive. Be sure to

perform a final check of all sequence wiring and other connections before turning on the power and also check for short circuits on the

control terminals, which may damage the drive.

Selecting a Circuit Breaker or Circuit Interrupter

Yaskawa recommends installing a Ground Fault Circuit Interrupter (GFCI) to the power supply side. The GFCI should be

designed for use with AC drives (e.g., Type B according to IEC 60755).

Select a Molded Case Circuit Breaker (MCCB) or GFCI with a rated current 1.5 to 2 times higher than the drive rated input

current to avoid nuisance trips caused by harmonics in the drive input current.

Magnetic Contactor Installation

NOTICE: To get the full performance life out of the electrolytic capacitors and circuit relays, refrain from switching the drive power supply

off and on more than once every 30 minutes. Frequent use can damage the drive. Use the drive to stop and start the motor.

Inspection and Maintenance

WARNING! Electrical Shock Hazard. Capacitors in the drive do not immediately discharge after shutting off the power. Wait for at least the

amount of time specified on the drive before touching any components after shutting off the power. Failure to comply may cause injury to

personnel from electrical shock.

WARNING! Burn Hazard. Because the heatsink can get very hot during operation, take proper precautions to prevent burns. When replacing

the cooling fan, shut off the power and wait at least 15 minutes to be sure that the heatsink has cooled down. Failure to comply may cause

burn injury to personnel.

Wiring

Yaskawa recommends using ring terminals on all drive models. UL/cUL approval requires the use of UL Listed closed-loop

crimp terminals when wiring the drive main circuit terminals. Use only the tools recommended by the terminal manufacturer

for crimping.

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.

Motor Application Precautions

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.

i.2 General Safety

YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual

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Yaskawa iQpump Micro Manuel d'utilisateur Page 41