5
Use Stage Safety
Grade
Precautions
Danger
t
Do not repair or maintain the AC drive at power-on.
Failure to comply will result in electric shock.
t
Ensure that the AC drive is disconnected from all
power suppliers before staring repair or maintenance
on the AC drive.
During
Maint
-
enance
Danger
t
Repair or maintenance of the AC drive may be
performed only by qualified personnel. Failure to
comply will result in personal injury or damage to the
AC drive.
t
Set and check the parameters again after the AC drive
is replaced.
During
Maint
-
enance
1.2 Cautions
1.2.1 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
during the insulation test. A 500-V mega-Ohm meter is recommended for the
test. The insulation resistance must not be less than 5M
Ω.
1.2.2 Thermal Protection of Motor
If the selected AC drive does not match the rated capacity of the motor ,
especially when the
rated power of the AC drive is higher than that of the motor,
adjust the parameters for motor
protection in the AC drive or to install thermal
relay to protect the motor .
1.2.3
Running Below and Above Rated Frequency
The AC drive provides frequency output of 0 to 600.00Hz. When the users use
the frequency
converter for a long time, please pay attention to the motor
cooling or use of variable frequency motor. If the AC drive is required to run at
over 50Hz, consider the capacity of the machine.
Safety and Cautions
