Mitsubishi Electric FR-A700 Instruction Manual page 8

Wiring
b
CAUTION:
● Do not install assemblies or components (e. g. power factor correction capacitors)
on the inverter output side, which are not approved from Mitsubishi.
● The direction of rotation of the motor corresponds to the direction of rotation
commands (STF/STR) only if the phase sequence (U, V, W) is maintained.
Operation
m
WARNING:
● When you have chosen the retry function, stay away from the equipment as it will
restart suddenly after an alarm stop.
● The STOP/RESET key is valid only when the appropriate function setting has been
made. Prepare an emergency stop switch separately.
● Make sure that the start signal is off before resetting the inverter alarm. A failure
to do so may restart the motor suddenly.
● The inverter can be started and stopped via the serial port communications link or
the field bus. However, please note that depending on the settings of the
communications parameters it may not be possible to stop the system via these
connections if there is an error in the communications system or the data line. In
configurations like this it is thus essential to install additional safety hardware that
makes it possible to stop the system in an emergency (e.g. controller inhibit via
control signal, external motor contactor etc). Clear and unambiguous warnings
about this must be posted on site for the operating and service staff.
● The load used should be a three-phase induction motor only. Connection of
anyother electrical equipment to the inverter output may damage the inverter as
well as equipment.
● Performing pre-excitation (LX signal and X13 signal) under torque control (real
sensorless vector control) may start the motor running at a low speed even when
the start command (STF or STR) is not input. The motor may run also at alow speed
when the speed limit value = 0 with a start command input. Perform pre-excitation
after making sure that there will be no problem in safety if the motor runs.
● Do not modify the equipment.
● Do not perform parts removal which is not instructed in this manual. Doing so may
lead to fault or damage of the inverter.
IV