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Test operation and adjustment
O Before starting operation, confirm and adjust the parameters. A failure to do so may cause some machines to make unexpected motions.
Operation
O When you have chosen the retry function, stay away from the equipment as it will restart suddenly after an alarm stop.
O Since pressing the
key may not stop output depending on the function setting status, provide a circuit and switch separately to make an
emergency stop (power off, mechanical brake operation for emergency stop, etc).
O Make sure that the start (STF/STR) signal is off before resetting the inverter alarm. A failure to do so may restart the motor suddenly.O
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 a low speed when the speed limit value = 0 with a
start command input. It must be confirmed that the motor running will not cause any safety problem before performing pre-excitation.
O 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.
O Use this inverter only with three-phase induction motors or with a PM motor. Connection of any other electrical equipment to the inverter
output may damage the inverter as well as the equipment.
O Do not modify the equipment.
O Do not perform parts removal which is not instructed in this manual. Doing so may lead to fault or damage of the inverter.
O The electronic thermal relay function does not guarantee protection of the motor from overheating. It is recommended to install both an
external thermal and PTC thermistor for overheat protection.
O Do not use a magnetic contactor on the inverter input for frequent starting/stopping of the inverter. Otherwise, the life of the inverter
decreases.
O Use a noise filter to reduce the effect of electromagnetic interference and follow the accepted EMC procedures for proper installation of
frequency inverters. Otherwise nearby electronic equipment may be affected.
O Take appropriate measures regarding harmonics. Otherwise this can endanger compensation systems or overload generators.
O When driving a 400V class motor by the inverter, the motor must be an insulation-enhanced motor or measures must be taken to suppress
surge voltage. Surge voltage attributable to the wiring constants may occur at the motor terminals, deteriorating the insulation of the motor.
O Use a motor designed for inverter operation. (The stress for motor windings is bigger than in line power supply).
O When parameter clear or all clear is performed, set again the required parameters before starting operations. Each parameter returns to the
initial value.
O The inverter can be easily set for high-speed operation. Before changing its setting, fully examine the performances of the motor and machine.
O The DC braking function of the frequency inverter is not designed to continuously hold a load. Use an electro-mechanical holding brake on
the motor for this purpose.
O Before running an inverter which had been stored for a long period, always perform inspection and test operation.
O For prevention of damage due to static electricity, touch nearby metal before touching this product to eliminate static electricity from your
body.
CAUTION
WARNING
CAUTION
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