HV100 Series High Performance Current Vector Inverter
5
● The electromagnetic contactor should not be installed on the output side of the inverter, because the contactor will
turn on and off when the motor is running, which will produce operating overvoltage and cause damage to the inverter.
However, configuration is still necessary for the following three situations:
The frequency conversion governor used for energy-saving control, the system often works at rated speed, and in
order to realize economic operation, it is necessary to cut off the inverter.
Participate in important process flow, cant shut down for a long time, and need to switch between various control
systems to improve system reliability.
When one inverter controls multiple motors. Users should pay attention to the fact that the contactor must not act
when the inverter has output!
1.5 Use safety matters
● Do not operate with wet hands.
● For inverters with stored for more than one year, the voltage regulator should be used to gradually increase the
voltage to the rated value when powering on, otherwise there is danger of electric shock and explosion.
●Don’t touch the inside of the inverter after it is powered on, and don’t put bars or other objects into the inverter,
otherwise it will cause electric shock death or the inverter can’t work normally.
●Please do not open the face cover when the inverter is powered on, otherwise there is a danger of electric shock.
● Use the restart function after power failure with caution, otherwise it may cause personal injury or death.
●If it runs over 50Hz, it is necessary to ensure the speed range of motor bearings and mechanical devices in use.
●Mechanical devices requiring lubrication, such as reduction boxes and gears, should not run at low speed for a long
time, otherwise their service life will be shortened and even equipment will be damaged.
● When the ordinary motor runs at low frequency, it must be derated because of its poor heat dissipation effect. If it is a
constant torque load, it must adopt the forced heat dissipation mode of motor or adopt a special frequency conversion
motor.
● Please cut off the input power of the inverter when it is not used for a long time, so as to avoid the inverter being
damaged or even causing fire due to foreign matter entering or other reasons.
● Since the output voltage of the inverter is PWM pulse wave, please do not install capacitors or surge current
absorbers (such as piezoresistors) at its output end, otherwise the inverter will fail and trip, and even the power
components will be damaged. If installed, be sure to remove it. As shown in figure 1 -3.
Figure 1-3
● Before the motor is used for the first time or placed for a long time before reuse, the motor insulation shall be
checked and the measured insulation resistance shall be ensured to be no less than 5MΩ.
● If you need to use the inverter outside the allowable working voltage range, you need to configure a step-up or
step-down device for transformation processing.
● In the area where the altitude exceeds 1,000 meters, the heat dissipation effect of the inverter will deteriorate due to
the thin air, so it needs to be derated. Generally, it needs to be derated by about 10% for every 1000m increase.
Attention
Danger
Warning
Attention
Inverter
Power factor compensation capacitor
Prohibition
Surge current absorber
Pro
hibit
ion