5-2
※For others errors not shown above, contact to your
supplier or local Hitachi distributor or service station .
*1)STO function is not suitable for LH1 series.
■Warning events
※Regarding the warnings, please refer to Page4-8. Fixing
the parameter details shown in the panel screen may
end the warning.
・Ground fault detected at main
circuit voltage turning-on
・Check for ground fault of the motor, wiring, etc.
・Continued state of incoming high
power
・Review the power circumstances, such as the power
supply capacity
・Instantaneous power failure,
control supply has dropped
・If you wish to avoid the tripping, use the power loss retry
function.
・Abnormality in temperature
detector circuit
・Carry out counter measures for the inverter noise
・Consecutive errors may cause a failure
・Because of cooling-fan life span,
internal temperature has raised
・Change of the cooling-fan is necessary
・Lower the carrier frequency
・Internal temperature has
increased
・Requires a review of the installation circumstances
・Lower the carrier frequency
・Disconnection of the wiring in the
supply side has occurred
・Check the fastening of the input wiring with screws
・Check that the 3 phases are correctly inserted
・Suddenly current increase
・Output wiring ground fault・Disconnection confirm
・Check that the motor is not locked
・Disconnection of the wiring in the
motor side has occurred
・Check the output wiring disconnection, motor insulation
failure, …etc.
・Check that the 3 phases are correctly inserted
・Abnormal motor temperature
・Improve the motor cooling circumstances
・Use the overload restriction function
・Check for the break-down of the thermistor
・Check the thermistor settings
・Check for the break-down of the brake and for the
disconnection of the wiring for the [BOK] signal
・Check the brake waiting time
・During slow speed, current has
increased
・If torque is needed during slow speed, a review of the
inverter capacity is necessary
・Panel disconnection error
・Check for the disconnection of the panel from the
inverter
・Noise counter-measures are necessary
・RS485 communication error
・Noise counter-measures are necessary
・Check the communication setting
・Battery replacement for the panel is necessary
・There is an error in the EzSQ
programme.
・ For more information, contact to your supplier or local
Hitachi distributor or service station .
・There is an error in the option.
・For more information, contact to your supplier or local
Hitachi distributor or service station .
・There is an error in the STO path
*1).
・For more information, contact to your supplier or local
Hitachi distributor or service station .
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