Precaution - Veikong VFD500 Series User Manual

VFD500 high performance vector control frequency inverter user manual
Use stage Security Level
DANGER
Before
Power-on
WARNING
DANGER
After Power-
on
WARNING
DANGER
During
Operation
WARNING
DANGER
Maintenance
WARNING

1.2 Precaution

Contactor using

If the contactor is installed on the power input side of the inverter, do not make the contactor
frequent on-off operation. The interval between ON and OFF of the contactor should not be less
than one hour. Frequent charging and discharging will reduce the use of capacitors in the
inverter life.
Make sure the voltage level of the input power is the same as the

rated voltage of the driver. Check if the wiring position of the power
input terminals (R, S, T) and output terminals (U, V, W) is correct; Of
the external circuit is short-circuited, the connection is tightened, or
cause damage to the drive!

No part of the drive needs to withstand voltage test, the product has
been made before the test. Otherwise, it may cause accident!
The driver must be covered before the cover can be powered,

otherwise it may cause electric shock!
All peripheral accessories must be wired according to the instructions

in this manual, and be properly wired in accordance with this manual.
Otherwise, it may cause accident!
Do not open the cover after power on, otherwise there is danger of

electric shock!
If the indicator light does not light after power on, the keyboard does

not display the situation, immediately disconnect the power switch,
do not touch any input and output terminals of the drive, otherwise
there is the risk of electric shock!
If parameter identification is required, preclude the possibility of

injury when rotating the motor!
Do not arbitrarily change the drive manufacturer parameters, or it may

cause damage to the device!
Do not touch the cooling fan, radiator and discharge resistance to

test the temperature, otherwise it may cause burns!
Non-professional technicians Do not detect the signal during

operation, otherwise it may cause personal injury or equipment
damage!
Drive operation, should avoid something falling into the device,

otherwise it will cause damage to the device!
Do not use the contactor on-off method to control the start and stop

the drive, otherwise it will cause damage to the equipment!
Do not live on the equipment repair and maintenance, or there is a

risk of electric shock!
Turn off the input power for 10 minutes before performing

maintenance and repair on the drive, otherwise the residual charge
on the capacitor will cause harm to people!
Do not carry out maintenance and repair on the drive without

personnel who have been professionally trained, otherwise personal
injury or equipment damage will occur!
All pluggable plug-ins must be unplugged in the case of power

failure!
The parameters must be set and checked after replacing the drive.

 Before performing maintenance work on the drive, make sure that the
motor is disconnected from the drive to prevent the motor from feeding
back power to the drive due to accidental rotation.
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Chapter 1 Safety information and precautions
Precautions