
VDF730 User Manual Safety Information and Precautions
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Use Stage Safety
Grade Precautions
At wiring
DANGER
•Wiring must be performed only by qualifed personnel under
instructions described in this manual. Failure to comply may
result in unexpected accidents.
•A circuit breaker must be used to isolate the power supply and
the AC drive. Failure to comply may result in a fre.
•Ensure that the power supply is cut off before wiring. Failure to
comply may result in electric shock.
•Tie the AC drive to ground properly according to the
requirements. Failure to comply may result in electric shock.
WARNING
• Never connect the power cables to the output terminals (U,
V, W) of the AC drive. Pay attention to the marks of the wiring
terminals and ensure correct wiring. Failure to comply will result
in damage to the AC drive.
•Never connect the braking resistor between the DC bus terminals
(+) and (-). Failure to comply may result in a fre.
• Ensure that all wiring complies with the EMC requirements
and local safety standard. Use wire sizes recommended in the
manual. Failure to comply may result in accidents.
•Use a shielded cable for the encoder, and ensure that the
shielding layer is reliably grounded.
Before
power-on
WARNING
• Check that the following requirements are met:
–The voltage class of the power supply is consistent with the
rated voltage class of the AC drive.
–The input terminals (R, S, T) and output terminals (U, V, W)
are properly connected.
–No short-circuit exists in the peripheral circuit.
–The wiring is secured.
Failure to comply will result in damage to the AC drive
• Do not perform the voltage resistance test on any part of the AC
drive because such test has been done in the factory. Failure to
comply will result in accidents.
DANGER
• Cover the AC drive properly before power-on to prevent electric
shock.
•All peripheral devices must be connected properly under the
instructions described in this manual. Failure to comply will
result in accidents.
After
power-on
DANGER
•Do not open the AC drive's cover after power-on. Failure to
comply may result in electric shock.
•Do not touch any I/O terminal of the AC drive. Failure to comply
may result in electric shock.
•The AC drive automatically performs safety detection on the
external strong power circuit immediately after power-on. Do not
touch the U, V, W terminals of the AC drive or wiring terminals
of the motor. Failure to comply may result in electric shock.