Omron Q2A Series Technical Manual page 30

2.1 Safety Precautions
The speed range for continuous operation will be different depending on the lubrication method
and motor manufacturer. To operate the motor at a speed higher than the rated speed, contact
the manufacturer.
If you continuously operate an oil-lubricated motor in the low-speed range, it can cause burning.
When the input voltage is 440 V or higher or the wiring distance is more than 100 meters, pay
special attention to the motor insulation voltage or use a drive-rated motor with reinforced
insulation.
Failure to obey can cause motor winding failure.
If you operated a machine at constant speed and then operated the same machine in variable-
speed mode, motor vibration will increase.
Install vibration-proof rubber on the motor base or use the frequency jump function to avoid the frequency that is
resonating the machine.
The motor may require more acceleration torque with drive operation than with a commercial
power supply. Check 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. Use the rated output current to select an applicable drive. When the distance between
the motor and drive is long, use a wire that can connect the motor to the drive without a
reduction in motor torque.
To use an explosion-proof motor, you must do an explosion-proof test with the drive. As the
drive is not explosion-proof, make sure that you install it in a safe area.
Failure to obey could cause damage to the drive.
Do not lift the drive with the cover removed.
Failure to obey can cause damage to the drive board and terminal block.
Do not use unshielded wire for control wiring. Use shielded, twisted-pair wires and ground the
shield to the ground terminal of the drive.
Failure to obey can cause electrical interference and unsatisfactory system performance.
Do not allow unqualified personnel to use the product. Before you connect a dynamic braking
option to the drive, make sure that you review Braking Unit and Braking Resistor Unit
Installation Manual TOBPC72060001.
Failure to obey can cause damage to the drive and braking circuit.
Do not change the drive circuitry.
Failure to obey can cause damage to the drive and will void warranty. The manufacturer is not responsible for
modifications of the product made by the user.
Make sure that all connections are correct after you install the drive and connecting peripheral
devices.
Failure to obey can cause damage to the drive.
30
NOTICE
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual