Safety precautions
The extension card can be installed and operated only by people who have taken part in professional training
on electrical operation and safety knowledge, obtained the certification, and been familiar with all steps and
requirements for installing, performing commissioning on, operating, and maintaining the device, and are
capable of preventing all kinds of emergencies.
Before installing, removing, or operating the communication card, read the safety precautions described in
this manual and the variable-frequency drive (VFD) operation manual carefully to ensure safe operation.
For any physical injuries or damage to the device caused due to your neglect of the safety precautions
described in this manual and the VFD operation manual, our company shall not be held liable.
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You need to open the housing of the VFD when installing or removing the communication card.
Therefore, you must disconnect all power supplies of the VFD and ensure that the voltage inside the
VFD is safe. For details, see the description in the VFD operation manual. Severe physical injuries or even
death may be caused if you do not follow the instructions.
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Store the communication card in a place that is dustproof and dampproof without electric shocks or
mechanical pressure.
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The communication card is electrostatic sensitive. Take measurements to prevent electrostatic discharge
when performing operations involving it.
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Tighten the screws up when installing the communication card. Ensure that it is firmly fixed and properly
grounded.