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HV400 Series Vector Frequency Converter
Fault
Code
Fault Type
Chapter 7 Fault Examination and Elimination
Possible Fault Causes
Counterme asures
1. Air line is blocked or fan
breaks down.
OH2
Inverter Overheat
2. Environmental temperature
is too high.
External Fault
Examining
acts.
input.
1．Setting proper Baud rate.
2 ． Pressing the key of STOP to
Baud
rate is set
inappropriately.
CE
Fault
2. Lowering the environmental
External fault input terminal
1. The
Comm unication
change a fan.
temperature.
3. Long term overloading
EF
1. Unblocking the air line or
2. Adopting communication
errors
of
serial
reset
external
and
equipment
examining
the
communication interface wiring.
3．Examining the communication
communication.
3. Long time interrupt of
interface wiring.
communication
1.
ItE
Current Sensing
Circuit Fault
Poor
contact
of
the
1. Examining the connector and
connector of the control panel
plug again.
2. The Hall device breaks
2. Replacing Hall.
down.
3. Replacing the main control
3. The amplifying circuit is
panel.
abnormal.
1 ． The capacity of the motor
tE
Motor Self-lear ning
Fault
does not match the capacity of
1 ． Replacing the model of the
the frequency converter.
frequency converter.
2．The rated parameter of the
2 ． Setting the rated parameter
motor is set inappropriately.
3 ． Deviation between the
according to the nameplate.
3 ． Letting the motor on no-load
self-learned
and
state and rectifying again.
too
4 ． Examining the motor wiring
standard
parameter
parameter
is
large.
and the parameter setting.
4．Self-learning time is out.
1 ． Pressing the key of STOP to
EEP
PIDE
EEPROM
Write-read Fault
PID Feedback
Disconnection
1. The write-read of the
control parameter goes wrong.
2. EEPROM breaks down.
1．PID feedback is off line.
2 ． PID feedback source
85
reset.
2 ． Replacing the main control
panel.
1．Examining PID feedback signal
line.