Safety Information and Precautions MD280 User Manual
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Use Stage
Safety
Grade
Precautions
After
power-on
DANGER
Do not touch the rotating part of the motor during the motor
auto-tuning or running. Failure to comply will result in accidents.
Do not change the default settings of the AC drive. Failure to
comply will result in damage to the AC drive.
During
running
DANGER
Do not touch the fan or the discharging resistor to check the
temperature. Otherwise, you may get burnt.
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during operation. Failure to comply will result in personal injury
or equipment damage.
WARNING
Avoid objects falling into the AC drive when it is running. Failure
to comply will result in damage to the AC drive.
Do not start/stop the AC drive by turning the contactor ON/OFF.
Failure to comply will result in damage to the AC drive.
During
maintenance
DANGER
Repair or maintenance of the AC drive can be performed only
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injury or damage to the AC drive.
Do not repair or maintain the AC drive at power-on. Failure to
comply will result in electric shock.
Repair or maintain the AC drive only ten minutes after the AC
drive is powered off. Otherwise, the residual voltage in the
capacitor will result in personal injury.
Ensure that the AC drive is disconnected from all power supplies
before starting repair or maintenance on the AC drive.
Set and check the parameters again after the AC drive is
replaced.
1.2 General Precautions
1 Requirement on residual current device RCD
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power supply. When selecting the RCD, you should consider the transient and steady-
state leakage current to ground that may be generated at startup and during running of
the AC drive. You can select a specialized RCD with the function of suppressing high
harmonics or a general-purpose RCD with relatively large residual current.
2 High leakage current warning
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PE conductor. Earth connection must be done before connection of power supply.
Earthing shall comply with local regulations and related IEC standards.
3 Motor insulation test
Perform the insulation test when the motor is used for the first time, or when it is
reused after being stored for a long time, or in a regular check-up, in order to prevent
the poor insulation of motor windings from damaging the AC drive. The motor must be
disconnected from the AC drive during the insulation test. A 500-V mega-Ohm meter is
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