Section Safety - YASKAWA AC Drive-A1000 Technical Manual

2.1 Section Safety

2.1 Section Safety
Provide sufficient cooling when installing the drive inside an enclosed panel or cabinet.
Failure to comply could result in overheating and fire.
When multiple drives are placed inside the same enclosure panel, install proper cooling to ensure air entering the enclosure
does not exceed 40 °C.
Do not carry the drive by the front cover or the terminal cover.
Failure to comply may result in minor or moderate injury from the main body of the drive falling.
Prevent foreign matter such as metal shavings or wire clippings from falling into the drive during drive installation
and project construction.
Failure to comply could result in damage to the drive. Place a temporary cover over the top during installation. Be sure to
remove the temporary cover before start-up, as the cover will reduce ventilation and cause the unit to overheat.
Observe proper electrostatic discharge (ESD) procedures when handling the drive.
Failure to comply could result in ESD damage to the drive circuitry.
Operating the motor in the low-speed range diminishes the cooling effects, increases motor temperature, and may
lead to motor damage by overheating.
Reduce the motor torque in the low-speed range whenever using a standard blower cooled motor. If 100% torque is required
continuously at low speed, consider using a special drive or vector-control motor. Select a motor that is compatible with the
required load torque and operating speed range.
The speed range for continuous operation differs according to the lubrication method and motor manufacturer.
If the motor is to be operated at a speed higher than the rated speed, consult with the manufacturer.
Continuously operating an oil-lubricated motor in the low-speed range may result in burning.
When the input voltage is 440 V or higher or the wiring distance is greater than 100 meters, pay special attention to
the motor insulation voltage or use a drive-rated motor with reinforced insulation.
Failure to comply could lead to motor winding failure.
Motor vibration may increase when operating a machine in variable-speed mode, if that machine previously operated
at a constant speed.
Install vibration-proof rubber on the motor base or use the frequency jump function to skip a frequency resonating the
machine.
The motor may require more acceleration torque with drive operation than with a commercial power supply.
Set a proper V/f pattern by checking the load torque characteristics of the machine to be used with the motor.
The rated input current of submersible motors is higher than the rated input current of standard motors.
Select an appropriate drive according to its rated output current. When the distance between the motor and drive is long, use
a cable thick enough to connect the motor to the drive to prevent motor torque reduction.
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WARNING
Fire Hazard
CAUTION
Crush Hazard
NOTICE
Equipment Hazard
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual