Ecowatt
®
Drive K120 series
Safety precautions
-2-
1.3
Safety guidelines
Only qualified electricians are allowed to operate on the VFD.
Do not carry out any wiring and inspection or changing
components when the power supply is applied. Ensure all input
power supply is disconnected before wiring and checking and
always wait for at least the time designated on the VFD or until the
DC bus voltage is less than 36V. The waiting time list is as follows.
VFD module
Minimum waiting time
1PH 220V
0.4kW-4kW
5 minutes
Do not refit the VFD unauthorized; otherwise, fire, electric shock or
other injury may occur.
The base of the radiator may become hot during running. Do not
touch to avoid hurt.
The electrical parts and components inside the VFD are
electrostatic. Take measurements to avoid electrostatic discharge
during related operation.
1.3.1
Delivery and installation
Please install the VFD on fire-retardant material and keep the VFD
away from combustible materials.
Connect the braking optional parts according to the wiring diagram.
Do not operate on the VFD if there is any damage or components
loss to the VFD.
Do not touch the VFD with wet items or body; otherwise, electric
shock may occur.
Note:
Select appropriate moving and installing tools to ensure a safe and normal running
of the VFD and avoid physical injury or death. For physical safety, the erector
should take some mechanical protective measurements, such as wearing exposure
shoes and working uniforms.
Ensure to avoid physical shock or vibration during delivery and installation.
Do not carry the VFD by its cover. The cover may fall off.
Install away from children and other public places.
The leakage current of the VFD may be above 3.5mA during operation. Ground with
proper techniques and ensure the grounding resistor is less than 10Ω. The
conductivity of PE grounding conductor is the same as that of the phase conductor.
For models higher than 30kW, the cross sectional area of the PE grounding
conductor can be slightly less than the recommended area.
Summary of Contents for Ecowatt Drive K120 Series
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Page 170: ...Ecowatt Drive K120 series Optional peripheral accessories 163 PB External braking resistor VFD...
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