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Fault
Fault
num
Code
ber
+10V power output
28
E.P10
abnormal
Analog input
29
E.AIF
abnormal
Motor over
30
E.Ptc
temperature(PTC)
Communication
abnormal 1
31
E.SE1
(Operation panel
RS485)
Communication
32
E.SE2
abnormal 2
(Terminal 485)
Version compatibility
33
E.VEr
abnormal
34
E.CPy
Copy failure
Expansion card
36
E.dL4
connection abnormal
Terminal mutual
37
E.IoF
exclusion check
failed
Hardware overload
38
E.oL3
protection
high performance crane special inverter User Manual
Fault
Possible Causes
Description
+10V power overload
+10V and GND is short circuited
+10V power terminal circuit failure
Analog input voltage is too large
Analog input circuit failure
Analog input circuit signal interfered
The
reaches the alarm setting value
Thermistor resistance failure
The sensor protection threshold of
the motor is set improperly
The communication of operation
panel RS485 is disconnected
Communication failure of operation
panel RS485
The inverter is set to master mode
The communication of terminal
RS485 is disconnected
The baud rate is set improperly
Communication failure of terminal
RS485
The communication of terminal
RS485 is time−out
Improper setting of failure alarm
parameters
The inverter is set to master mode
Incompatible software version of the
operation panel
The data error when upload
he data error when download
Parametric copy download without
parameter upload
Software version incompatible
Expansion card disconnection
Expansion card failure
The functions of X1 to X7, AI1, AI2
and DI terminals are set in a repeated
manner
Load failure
Chapter 6 Crane specialinverter faults and troubleshooting
motor
temperature
signal
Countermeasure
Increase +10V power load impedance
Utilize externally independent power
supply
Eliminate the short circuit failure
Seek for technical support
Check
whether
the
voltage complies with the requirements
Seek for technical support
Increase the P6.22～P6.24 AI filtering
time
Strengthen ventilation and heat
dissipation
Check the thermistor
Adjust the sensor protection threshold
of the motor
Check the connection of the
equipment communications
Check if the sending and receiving
data meets the agreement
Set the inverter to slave mode
Check the connection of the
equipment communications
Set compatible baud rate
Check if the sending and receiving
data meets the agreement
Check if the communication timeout
setting is appropriate
Adjust the failure alarm parameter
Set the inverter to slave mode
Seek for technical support
Check connection of operation panel
Check connection of operation panel
Perform download before uploading
the parameters
Check if d1.09 is consistent
Ask professional technicians to
maintain
Seek for technical support
Modify the settings of X1 to X7, AI1,
AI2 and DI terminals and ensure the
setting functions are not repeated
(excluding null function)
Check whether motor is blocked
Replace inverter with proper model
analog
input
37
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