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  • Only qualified electricians are allowed to operate on the VFD.

  • Do not carry out any wiring, inspection or components replacement 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 table below describes the waiting time:

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  • Do not refit the VFD unless authorized; 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 related 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.

  • Solid State motor overload protection reacts when reaches 150% of FLA.

  • Drives have no provision for motor over temperature protection.

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.

  • Please use the VFD on appropriate condition (See chapter Installation environment).

  • Don't 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. Proper and reliable grounding is essential before connecting to power 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 motor terminals. 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 cannot be used as “Emergency-stop device”.

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

  • Besides the above items, check to ensure the following ones before the installation and maintenance during the running of the permanent synchronous   motor:

     1.  All input power supply is disconnected (including the main power supply and the control power supply).

     2.  The permanent magnet synchronous motor has stopped running and measured to ensure the output voltage of the VFD is less than 36V.

     3.  The waiting time of the permanent magnet synchronous motor after stopping is no less than the time designated and measure to ensure the   voltage between + and – is less than 36V.

     4.  Ensure the permanent magnet synchronous motor does not rotate again because of the external load. It is recommended to install effectively external braking devices or disconnect the electric wiring between the motor and the VFD directly.

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 to run it again before utilization (see Maintenance and hardware diagnostics).

  • 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 select 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 What to do after scrapping

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There are heavy metals in the VFD. Deal with it as industrial effluent.

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When the life cycle ends, the product 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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