Specifications

Name
Overcurrent
protection
Overload protection
(*1)
Braking resistor
overload protection
Overvoltage
protection
EEPROM error(*2)
Undervoltage
protection
CT error
CPU error
External trip
USP error
Ground fault
protection
Input overvoltage
protection
Temperature error
PTC error
Digital operator
Description
When the motor is restrained or suddenly reduced in
speed, a large current is charged to the inverter,
causing a fault. When the inverter detects 205% peak
current for the rated current of the inverter,Over current
is occurred.
When the inverter output current causes the motor to overload, the electronic
thermal trip in the inverter cuts off the inverter output.
If the duty rating for the regenerative braking resistor has been exceeded,an overvoltage is detected
by stopping BRD(regenerative braking unit)operation and the inverter output is turned off.
If regenerative energy from the motor or the main power supply voltage is high,
the protective circuit activates to cut off the inverter output when the voltage of
the converter section exceeds the specification.
The inverter output is cut off when EEPROM in the inverter has an error due to
external noise, excessive temperature rise, or other factor.
When the input voltage received by the inverter decreases, the control circuit
does not function normally. When the input voltage is below the
specification, the inverter output is cut off.
Turns off the output if CT in the inverter has become abnormal.
The inverter output is cut off when the inverter CPU has a malfunction or an
error.
When the external equipment or unit has an error, the inverter receives the
corresponding signal and cuts off the output.
The USP error is indicated when the power is turned on with the inverter in
RUN state. (Enabled when the USP function is selected.)
Ground fault is detected between the inverter output section and the motor
when the power is turned on, to protect the inverter.
When the input voltage is higher than the specified value, it is detected 100
seconds after power is turned on and the output is cut off.
When the temperature in the main circuit increases due to cooling fan stop,
the inverter output is cut off. (Only for the model type with cooling fan)
When the resistance value of the external thermistor is too large, the equipment
detects the abnormal condition of the thermistor and then cut off the output
(when PTC function is selected)
Constant speed
Deceleration
Acceleration
Others
Trip Monitoring Method
FUNC
FUNC FUNC
FUNC
FUNC FUNC
Trip cause Trip frequency Trip current
Trip History Monitoring Method
Previous trip cause Trip cause before the previous
FUNC
Trip + - (DC) voltage
1: is indicated when there is no trip.
Note
OC.Drive
OC.Decel
OC.Accel
Over.c
Over.L
OL.BLD
Over.V
EEPROM
Under.V
CT
CPU
CPU2
EXTERNAL
USP
GND.Flt
OV.SRC
OH FIN
PTC
Remote operator
/copy unit
ERR1 ****
Protective Functions
Waiting on account
of undervoltage
Waiting with the output turned off, because the inverter receiving Voltage has
dropped.
UV.WAIT
Notes
1.Press the reset key 10 seconds after the alarm has occurred.
2.If an EEPROM error occurs,be sure to comfirm the seting value again.
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