Emotron VS Series Quick Start Guide
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Maintenance
Danger
◆
Maintenance and inspection can only be performed by
professionals . Risk of personal injury.
◆
Maintain and inspect devices after power is off. Risk of
electric hazard.
◆
Repair or maintain the AC drive only ten minutes after
the AC drive is powered off. This allows for the residual
voltage in the capacitor to discharge to a safe value.
Failure to comply will result in personal injury.
◆
All pluggable components can be inserted or pulled out
only when power has been turned off.
◆
Set and check the parameters again after the AC drive
is replaced.
1.2 Precautions
1.2.1 Motor Insulation Inspection
When the motor is used for the first time or when the motor is reused after being kept, or when
periodical inspection is performed, insulation inspection shall be conducted with motor so as to avoid
damaging the inverter because of the insulation failure of the motor windings. The motor wires must be
disconnected from the inverter during the insulation inspection. It is recommended to use the 500V
mega meter, and the insulating resistance measured shall be 5MΩ at least.
1.2.2 Motor Thermal Protection
If the motor rating does not match that of the inverter, especially when the rated power of the
inverter is higher than that of the motor, adjust motor protection parameters in the inverter or install
thermal relay to protect motor.
1.2.3 Operating with the Frequency Higher than Grid Power Frequency
Output frequency of VS is 0.00Hz
～
600.00Hz. If VS is required to operate above 50.00Hz, please
take the endurance of mechanical devices into consideration.
1.2.4 Mechanical Vibrations
Inverter may encounter mechanical resonance point of the load device at certain output
frequencies which can be avoided by setting the skip frequency parameters of the inverter.
1.2.5 Motor Heat and Noise
Since output voltage of inverter is PWM wave and contains a certain amount of harmonics, so
that the temperature, noise and vibration of the motor will be higher than those when the inverter runs
at grid power frequency.
1.2.6
Voltage-sensitive device or capacitor on output side of the AC drive
Do not install the capacitor for improving power factor or lightning protection voltage-sensitive
resistor on the output side of the AC drive because the output of the AC drive is PWM wave.
Otherwise, the AC drive may suffer transient overcurrent or even be damaged.
1.2.7 Contactor at the I/O terminal of the AC drive
When a contactor is installed between the input side of the AC drive and the power supply, the AC
drive must not be started or stopped by switching the contactor on or off. If the AC drive has to be
operated by the contactor, ensure that the time interval between switching is at least one hour since
frequent charge and discharge will shorten the service life of the capacitor inside the AC drive.
When a contactor is installed between the output side of the AC drive and the motor, do not turn
off the contactor when the AC drive is active. Otherwise, modules inside the AC drive may be
damaged.
1.2.8 Applied with the Rated Voltage
Apply VS with the rated voltage. Failure to comply will damage inverter. If required, take a
transformer to boost or step-down voltage.
