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  • 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. Below is the table of the waiting time:

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  • Do not refit the VFD unauthorizedly; otherwise fire, electric shock or other injury may occur.

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  • The base of the radiator may become hot during running. Do not touch to avoid hurt.

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  • The electrical parts and components inside the VFD are electrostatic. Take measurements to avoid electrostatic discharge during relevent operation.

 

1.4.1 Delivery and installation

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Please install the VFD on fire-retardant material and keep the VFD away from combustible materials.

  • Connect the braking optional parts (braking resistors, braking units or feedback units) 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 safety shoes and working uniforms.

  • 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.

  • When the installation site altitude exceeds 1000m, derate 1% for every increase of 100m; when the installation site altitude exceeds 3000m, consult the local INVT dealer or office.VFD.

  • Please use the VFD in appropriate conditions (For details, see 3.2.1 "Installation environment").

  • Do not allow screws, cables and other conductive items to fall inside the VFD.

  • The leakage current of the VFD may be above 3.5mA during operation. High leakage current, earth connection essential before connecting supply. 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 (with the same cross sectional area).

  • R, S and T are the input terminals of the power supply, while U, V and W are the output terminals for connecting to the motor. Please connect the input power cables and motor cables with proper techniques; otherwise the damage to the VFD may occur.

1.4.2 Commissioning and running

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  • Disconnect all power supplies applied to the VFD before the terminal wiring and wait for at least the designated time after disconnecting the power supply.

  • High voltage is present inside the VFD during running. Do not carry out any operation except for the keypad setting.

  • The VFD may start up by itself when P01.21=1. Do not get close to the VFD and motor.

  • The VFD can not be used as "Emergency-stop device".

  • The VFD cannot be used to break the motor suddenly. A mechanical braking device should be provided.

Note:

  • Do not switch on or off the input power supply of the VFD frequently.

  • For VFDs that have been stored for a long time, check and fix the capacitance and try a pilot run before utilization.

  • Cover the front board before running, otherwise electric shock may occur.

1.4.3 Maintenance and replacement of components

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  • Only qualified electricians are allowed to perform the maintenance, inspection, and components replacement of the VFD.

  • Disconnect all power supplies to the VFD before the terminal wiring. Wait for at least the time designated on the VFD after disconnection.

  • Take measures to avoid screws, cables and other conductive matters to fall into the VFD during maintenance and component replacement.

Note:

  • Please use proper torque to tighten screws.

  • Keep the VFD, parts and components away from combustible materials during maintenance and component replacement.

  • Do not carry out any isolation and pressure test on the VFD and do not measure the control circuit of the VFD by megameter.

  • Carry out a sound anti-electrostatic protection to the VFD and its internal components during maintenance and component replacement.

1.4.4 Device disposal

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  • The VFD contains heavy metals. Dispose of a scrap one as industrial waste.

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  • When the life cycle ends, the VFD should enter the recycling system. Dispose of it separately at an appropriate collection point instead of placing it in the normal waste stream.



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