IMO VXSM150-1, Instruction Manual

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ii Safety Instructions
Wiring
CAUTION
• Check that the number of phases
and the rated voltage of the product
agree with the number of phases and the
voltage of the AC power supply.
Otherwise fire or an accident could
occur.
• Do not connect the AC power cables to
the output terminals (U, V, W).
Otherwise fire, accident or damage could
occur.
• Do not connect a braking resistor directly
to the DC terminals (P (+), N (-)).
Otherwise fire, accident or damage could
occur.
• The inverter, motor and wiring generate
electric noise. Take care of malfunction of
the nearby sensors and devices.
Otherwise an accident could occur.
WARNING
• When connecting the inverter to the
power supply, add a circuit breaker for
circuit protection and earth leakage breaker
in the path of power supply.
Otherwise fire could occur.
• This equipment must be earthed.
Otherwise electric shock or fire could
occur.
• Both screws of grounding terminals of
VXSM75-1/550-3 need to be tightened up
securely even if one grounding terminal is
not used.
Otherwise electric shock or fire could
occur.
• Qualified electricians should carry out
wiring.
Otherwise electric shock could occur.
• Perform wiring after checking that the
power supply is turned off.
Otherwise electric shock could occur.
• Be sure to perform wiring after installing
the main body of the inverter.
Otherwise electric shock or injuries
could occur.
Operation
CAUTION
• Do not turn the main circuit power
on or off to start or stop inverter
operation.
Otherwise failure could occur.
• Do not touch the heat sink and braking
resistor because they become very hot.
Otherwise burns could occur.
• Setting the inverter to high speeds is
easy. Check the performance of the motor
and machines before changing the setting.
Otherwise injuries could occur.
• The brake function of the inverter does
not provide mechanical holding means.
Injuries could occur.
WARNING
• Be sure to install the terminal cover
before turning the power on. Do not
remove the cover during power application.
Otherwise electric shock could occur.
• Do not operate switches with wet hands.
Otherwise electric shock could occur.
• If the retry function has been selected, the
inverter may automatically restart
according to some causes after tripping.
(Design the machine so that human safety is
ensured after restarting.)
Otherwise an accident could occur.
• If the torque limit function has been
selected, the inverter may operate at an
acceleration/deceleration time or speed
different from the set ones. Design the
machine so that safety is ensured even in
such cases.
Otherwise an accident could occur.
• The STOP key is only effective when
function setting has been established to
make the STOP key enable. Prepare an
emergency stop switch separately.
Otherwise an accident could occur.
• If an alarm reset is made with the
operation signal turned on, a sudden start
will occur. Check that the operation signal
is turned off in advance.
Otherwise an accident could occur.
• Do not touch the inverter terminals when
power to the inverter is applied even if the
inverter has stopped.
Otherwise electric shock could occur.