Contactor Using; Lightning Impulse Protection; Precaution - Veikong VFD500 Series Operation Manual

Chapter1 Safety information and precaution
Use stage Security Level
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.
If a contactor is installed between the inverter output terminals (U, V, W) and the motor, make sure that the
inverter is turned on and off when there is no output. Otherwise, the inverter may be damaged.


Lightning impulse protection

Although this series of inverters are equipped with lightning over-current protection device, there is a certain
degree of self-protection for inductive lightning, but for lightning frequent place, customers should also install
lightning protection device in the front of the inverter.
VFD500 high performance vector control frequency inverter user manual
damage to the drive!

No part of the drive need 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.
- 2 -
Precautions