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Shutdown
undervoltage
A.LU1
warning
Note: A.LU1 is normal during power failure due to the long discharge time of the capacitor voltage when the drive is powered off.
Code
Name
A.OU
Stop over voltage warning
Note: This warning is detected when the bus voltage exceeds the overvoltage point. The overvoltage point is 820V for three-phase input and 400V for
single-phase input.
Code
Name
A.ILF
Input phase loss warning
Note: The F10.20 [Input, Output Phase Loss Protection Selection] ten digits select whether to enable the input phase loss warning detection function.
Code
Name
PID
feedback
A.PID
disconnection warning
Note: The PID feedback input is not within the range set by F13.27 [Disconnection Detection Upper Limit] and F13.28 [Disconnection Detection Lower
Limit], and is reported after exceeding the setting value of F13.26 [Disconnection Detection Time]. The fault.
The motor action can be detected when the fault is detected by F13.25 [PID feedback disconnection processing].
Code
Name
EEPROM read and write
A.EEP
warning
Code
Name
Speed deviation too large
A.DEF
warning
Note: The percentage of the output motor speed relative to F01.10 [maximum frequency] is greater than F10.41 [speed deviation detection threshold],
and the fault is reported after F10.42 [speed deviation detection time].
This fault detection can be enabled by F10.40 [Speed deviation excessive protection action] and the motor operation mode when the fault is detected can
be set.
Code
Name
A.SPD
Speed warning
Note: The percentage of the output motor speed relative to F01.10 [maximum frequency] is greater than F10.44 [flying detection threshold], and the fault
is reported after F10.45 [flying detection time].
This fault detection can be enabled by F10.43 [Fast protection action] and the motor operation mode when the fault is detected can be set.
Code
Name
A.GPS1
GPS lock
Note: GPS function needs to be equipped with GPRS expansion card.
Code
Name
A.GPS
GPS disconnection
2
Note: GPS function needs to be equipped with GPRS expansion card.
Code
Name
Modbus
communication
A.CE
warning
Input supply voltage is too low
Input power loss occurs
The input terminal of the input power supply is loose
Drive main circuit capacitor aging
Reason
Power supply voltage is too high
Drive output or motor short to ground
Surge voltage mixed in the input voltage
Reason
The main circuit terminal of the drive is loose.
Input voltage fluctuation is too large
Three-phase voltage imbalance
Reason
PID disconnection detection related parameters are set
incorrectly
Improper wiring of PID feedback
Sensor for PID feedback fails
The PID feedback loop of the drive control board is
abnormal.
Reason
Read and write parameters to receive interference
during EEPROM operation
Reason
Excessive load
Adding and decelerating time is too short
Improper setting of speed deviation detection
parameters
The motor electromagnetic brake is in the brake state
Reason
Improper setting of encoder line number or pole
number
Improper setting of parameters related to rapid
detection
Reason
Drive usage time reaches set time
Reason
Communication cable failure, such as short circuit,
disconnection, etc.
Communication data is abnormal due to interference
Reason
Communication cable failure, such as short circuit,
disconnection, etc.
Communication data is abnormal due to interference
47
Increase input supply voltage
Confirm that the main circuit wiring is normal
Tighten the main circuit terminal block
Seeking technical support
Countermeasures
Reduce the supply voltage to the specified range
Check main circuit wiring to eliminate short circuit
Adding reactor on the input side
Countermeasures
Tighten the screw and restart it.
Improve the power supply to meet the rated voltage of
the drive
If there is no problem with the main circuit power
supply, check if there is a problem with the
electromagnetic contactor on the main circuit side.
Check if there is a problem with the input voltage and
improve the power imbalance.
Countermeasures
Adjust F13.27 [Wire break detection upper limit],
F13.28 [Wire break detection lower limit], and F13.26
[Wire break detection time]
Confirm that the PID feedback wiring is normal.
Check if the sensor is abnormal
Seek technical support from manufacturers
Countermeasures
Re-read and write parameters after checking and
eliminating interference sources
Countermeasures
Reduce the load
Increase F01.22, F01.23 [addition and deceleration
time]
Adjust F10.41 [speed deviation detection threshold]
and F10.42 [speed deviation detection time]
Open the brake
Countermeasures
Adjust F02.33 [ABZ encoder line number] or F02.34
[rotation pole number]
Adjust F10.44 [Flying Detection Threshold] and
F10.45 [Fast Detection Time]
Countermeasures
Seek technical support from manufacturers
Countermeasures
Check if the communication connection is normal
Check whether the grounding wire of the whole
machine is normal.
Change the communication cable with shield
Countermeasures
Check if the communication connection is normal
Check whether the grounding wire of the whole
machine is normal.
Change the communication cable with shield
AC10 Series Frequency Inverter Technical Manual
Troubleshooting
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