Chapter 6 Fault diagnosis and solutions IR610 high performance vector control frequency inverter user manual
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Fault Name
Fault
code
Display
Possible Causes
Solutions
Over current
at constant
speed
4
Er.OC3
1: The output circuit is grounded or
short circuited.
2: Motor auto-tuning is notperformed.
3: The voltage is too low.
4: A sudden load is added during
operation.
5: The frequency inverter model is of
too small power class.
1:Eliminateexternalfaults.
2: Perform
themotorauto-tuning.
3:AdjustThevoltagetonormalran
ge.
4: Remove the addedload.
5: Select afrequency
Inverterofhigher powerclass.
Overvoltage
during
acceleration
5
Er.OU1
1:the input voltage is too high
2:The surge voltage is mixed in the
input power supply.
3: there is an external force to drive the
motor to run, or the brake type load is
too heavy
4:the acceleration time is too short
5:the motor is shorted to ground
1:the power supply voltage is
reduced to the normal range
2:install DC reactor
3:Cancel the external force of
the draggable motor or install
the brake unit
4: increase the acceleration
time
5:eliminate the part of the
ground short circuit
Overvoltage
during
deceleration
6
Er.OU2
1:the input voltage is too high
2:The surge voltage is mixed in the
input power supply.
3: there is an external force to drive the
motor to run, or the brake type load is
too heavy
4:the decceleration time is too short
5:the motor is shorted to ground
1:the power supply voltage is
reduced to the normal range
2:install DC reactor
3:Cancel the external force of
the draggable motor or install
the brake unit
4: increase the decceleration
time
5:eliminate the part of the
ground
Overvoltage
at constant
speed
7
Er.OU3
1:the input voltage is too high
2:The surge voltage is mixed in the
input power supply.
3: there is an external force to drive the
motor to run, or the brake type load is
too heavy
4:the acceleration or decceleration time
is too short
5:the motor is shorted to ground
1:the power supply voltage is
reduced to the normal range
2:install DC reactor
3:Cancel the external force of
the draggable motor or install
the brake unit
4: increase the acceleration or
decceleration time
5:eliminate the part of the
ground
Low voltage
8
Er.Lv1
1: Instantaneous power failure occurs
on the input power supply or input
phase loss
2: The frequency inverter's input
voltage is not within the allowable
range.
3: cut off the power during operation
4:the internal wiring of the inverter is
loose, or the hardware is bad.
1:Check if the input power
supply is abnormal, whether the
input power terminal is loose,
whether the input contactor or
the air switch is abnormal.
2:adjust the voltage to the
normal range
3:Power off after the inverter
stops
4:seeking technical support
5: For the unstable power
supply, if the performance
requirements are low, try to
enable the undervoltage stall
function (P23.00).
Summary of Contents for IR610 Series
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