TECHTOP TD20 Series - 1.3.2 Commissioning and running

TD20 Series VFD Safety Precautions
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• 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.
1.3.2 Commissioning 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.
• 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 can not 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 to run it again
before utilization (see Maintenance and Hardware Fault Diagnose).
• Cover the front board before running, otherwise electric shock may occur.
1.3.3 Maintenance and replacement of components
• 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.
1.3.4 What to do after scrapping
• There are heavy metals in the VFD. Deal with it as industrial effluent.