Chapter
1
Safety
Precautions
3
Chapter 1 Safety Precautions
1. Servo motor insulation test
Perform the insulation test when the servo motor is used for the first time, reused after
being stored for a long time, or in a regular checkup, in order to prevent poor insulation of
servo motor windings from damaging the servo drive. The servo motor must be
disconnected from the servo drive during the insulation test. A 500-V mega-Ohm meter is
recommended for the test. Ensure that the insulation resistance is not less than 5 M
Ω
.
2. Thermal protection of motor
If the rated capacity of the motor selected does not match that of the servo drive,
especially when the rated power of the servo drive is greater than that of the motor, adjust
the motor protection parameters on the operation panel of the servo drive or install a
thermal relay for the motor for protection.
3. Motor heat and noise
The output of the servo drive is pulse width modulation (PWM) wave with certain
harmonics, and therefore, the temperature rise, noise, and vibration are slightly greater
than those at running with the mains frequency.
4. Voltage-sensitive device or capacitor on the output side of the servo drive
The output of the AC drive is PWM wave. Do not install the capacitor for improving power
factor or lightning protection voltage-sensitive resistor on the output side of AC drive.
Otherwise, the AC drive may suffer transient overcurrent or even be damaged.
