VD560 Series Inverter User Manual Safety and Precautions
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1.2.6 During Operation
● Do not touch the cooling fan or braking resistor etc, otherwise may cause personal injury!
● Do not do inspection while inverter run, except for professional technician, otherwise may cause
inverter damaged or personal injury.
● Do not move inverter or the installed cabinet while it is run, keep external objects falling into the
device. Failure to comply will result in damage.
● Start/Stop inverter via terminal function or other control method, try not to start inverter via directly
power-on control method. Do not use contactor on inverter output terminal to control motor starting
or stop.
1.2.7 During Maintenance
● Do not repair and maintain the equipment if power is connected. Otherwise there will be danger of
electric shock!
● If the LED is still on light on control panel, it is Disabled to disassemble the body in order to avoid
electric shock.
●The inverter shall be repaired and maintained only by the qualified person who has received
professional training. Otherwise, it may cause personal injury or equipment damage.
● For all the standard equipped or optional accessories, must be dismounted or mounted while the
inverter power is disconnected.
1.3 General Precautions
1.3.1 Motor Insulation Inspection
For first time usage, motor is left unused for long time or periodically inspected, insulation inspection
must be done to avoid motor coils insulation failure which may result in inverter damage. Disconnect
motor and inverter before inspection, 500V voltage type Meg-ohmmeter is recommended. It is up to
standard if insulation resist value no less than 5MΩ.
1.3.2 Motor Overheat Protection
If selected motor and inverter rated capacity doesn’t match, especially the inverter rated power larger
than motor rated power, it is necessary to adjust the motor protect parameter of inverter into actual
used motor parameter. Or a thermal relay can be installed to motor to protect motor.
1.3.3 Run with Power Frequency (under or above)
This inverter can provide 0.00Hz~650.00Hz output frequency, so motor is run at low frequency on
long time. Take care of motor cooling or frequency converted motor could be a choice. When motor
run with over-limit rate frequency, consider the bearing capacity of mechanic system with high speed,
to avoid the shortening of lifespan of equipment.
1.3.4 Vibration and Resonance of Mechanic System
Since inherent property of mechanic system, inverter could have mechanic system resonance point
while accelerating or decelerating, by setting inverter jump frequency can avoid mechanic system
resonance point. If customer required run frequency is happened to be the same with mechanic
resonance frequency, it is necessary to change run frequency or change the inherent resonance
frequency of mechanic system.
