INVT Goodrive300 Series Operation Manual page 8

Goodrive300 Series VFD
• Do not carry the VFD by its cover. The cover may fall off.
• Install away from children and other public places.
• The VFD cannot meet the requirements of low voltage protection in IEC61800-5-1 if the altitude of
installation site is above 2000m.
• Please use the VFD on appropriate condition (See section 4.2.1 "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. The leakage current is
high, so performing grounding before supply connection is essential. 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). For
models higher than 30 kW, the cross sectional area of the PE grounding conductor can be slightly
less than the recommended area.
• R, S and T are the input terminals of the power supply, while U, V and W are the motor output
terminals. Please connect the input power cables and motor cables with proper techniques;
otherwise damage to the VFD may occur.
1.4.2 Commission and running
• 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.It must be noted that the control
terminals of the VFDs of 3PH AC 500V and 3PH AC 660V are ELV (Extra Low
Voltage) circuit, which cannot be connected directly to the accessible terminals
of other devices if no protective isolation measure is taken.
• 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 precautions, you must ensure the following before the
installation and maintenance if a permanent-magnet synchronous motor is
running:
1. All input power is disconnected (including the main power supply and the
2. The permanent-magnet synchronous motor has stopped running and
3. The waiting time of the permanent-magnet synchronous motor after stopping
control power supply).
measured to ensure the output voltage of the VFD is less than 36V.
is no less than the time designated and measure to ensure the voltage
between + and – is less than 36V.
3
Safety precautions