Vicruns 2S-0.4G-B, User Manual

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Chapter 9 Troubleshooting and Countermeasures
Fault name
Panel
display
Troubleshooting
Troubleshooting
Countermeasures
Master-slave
control
communicatio
n dropped
Err46
u
The master is not set but the
slave is set
u
The communication line is
abnormal or the
communication parameters
are incorrect
u
Set the host and reset the
fault
u
Check the communication
line and communication
parameter P8 group
9.2 Common faults and their solutions
The following fault conditions may be encountered during the use of the inverter,
please refer to the following methods for simple fault analysis.
Serial
number
Fault
phenomenon
Possible reason Solution
1
No display
when power on
u
The grid voltage is not available
or too low
u
The switching power supply on
the drive board of the inverter is
faulty
u
The rectifier bridge is damaged
u The buffer resistance of the
inverter is damaged
u
Control panel and keyboard
failure
u
The connection between the
control board, the driver board
and the keyboard is broken
u
Check the input
power
u
Check the bus
voltage
u Re-plug the keyboard
and the 30-pin cable
u
Seek manufacturer
service
2
Display "Err20"
alarm when
power on
u
The motor or output line is short-
circuited to ground
u
The inverter is damaged
u
Use a shaker to
measure the
insulation of the
motor and output line
u
Seek manufacturer
service
Table 9-2 Common faults and their solutions
C
h
a
p
te
r
9