Precautions - Adleepower MS Series Instruction Manual

9. PRECAUTIONS

9-1 Prior to maintenance, check the following :
(1) Before maintenance, be sure to turn the power off and wait
until the LED digits vanish in the display. However, approx.
50 VDC still remains immediately after the display
disappears, so wait a little bit longer.
(2) When removing or re-installing a connector, do not pull the
cable.
(3) Take special care not to misplace the connector. Carefully
note any disconnecting or poor contact. Be sure to tighten
the terminals and connectors securely.
9-2 Application precautions
(1) Before you start operation, thoroughly check for erroneous
wiring or short circuits in the motor or in the wiring
between your motor and the inverter. Do not ground the
neutral point of the motor with a star connection.
(2) An inverter-driven run generates a certain amount of
electromagnetic noise, as compared with that of driven
directly by a commercial power supply. Thus you should be
aware of such limitation when using an inverter-driven
motor at a noise-sensitive site.
(3) Before setting the maximum frequency at 60HZ or higher,
confirm that this operation range is acceptable with that of
your motor.
(4) When you determine an appropriate inverter capacity,
ensure that the rated current of the motor does not exceed
the inverter
(5) Install a mold-case circuit breaker (MCCB) at the
inverter
,
s rated current.
,
s power supply end to protect the wiring.
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