SCOV SV800 Series, User Manual

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SV800/SV800A User Manual 1 Safety information and precautions
3
WARNING

Do not touch the fan, radiator or braking resistor directly. May cause mechanical injury and burns.

Do not use the input contactor on/off frequently to control the start and stop of the frequency inverter.
May cause damage to the inverter.

Check the allowable operating range of the motor and machine before operating as it is very easy for
the inverter to drive the motor from low speed to high speed. Otherwise it may cause equipment
damage.
1.1.5 Safety precautions for maintenance and rejection
DANGER

Product maintenance, inspection and component replacement must be performed by qualified
professional engineer. Otherwise it has danger of electric shock.

Forbidden to carry out maintenance or repair on the inverter still with power on. Even if the power is
cut off, the capacitor inside the inverter needs a certain discharge time and the waiting time is not
shorter than the time marked on the inverter. Please confirm that the DC voltage b 1 ~- or + 2
~- is less than 30V. Otherwise it has danger of electric shock.
WARNING

All pluggable devices must be plugged in and removed when the power supply is off. Otherwise it
may cause damage to the inverter.

Do not touch the component body by hand when maintaining, inspecting or replacing parts. Otherwise
it may damage devices by electrostatic.

The inverter must be treated as industrial waste after it is discarded.
1.1.6 Other safety precautions
WARNING

Insulation inspection of motor

When the motor is used for the first time or after being left for a long time and periodically inspected,
the motor insulation inspection should be performed to prevent the inverter from alarming or
damaging due to the insulation failure of the motor winding. The motor wiring must be separated from
the inverter during the insulation check. 500V voltage megohmmeter is recommended and the
insulation resistance of the motor wiring should be larger than 5MΩ.

Low-frequency operation of motor

Non-frequency variable standard motors will have poor cooling effect at low speed and the
temperature of the motor will increase, so please reduce the load torque of the motor at low speed.

Thermal protection of motor
If the rated power of the inverter is greater than the rated power of the motor, please adjust the related
parameters of motor protection in the inverter or install a thermal relay on the front of the motor to
protect it.

Surge protection
This series of inverter is equipped with a surge suppressor inside which has a certain degree of
protection against induced lightning. However, for lightning-prone areas, users need to place an