Inovance MD320 Series, User Manual

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MD320/MD320N User Manual Fault Diagnosis and Solution
8.2 Common Fault and Resolution
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analysis by referring to the methods below:
Table8-1 Common Fault and Resolution
No. Fault Phenomenon Possible Cause Solution
1
No display upon
power-on
1. The inverter has no input
power supply.
2. 8-core bus connecting with
the drive board and control
bard is in poor contact.
The internal parts of the inverter
are damaged.
1. Check the input power
supply.
2. Plug/unplug the 8-core
bus once again.
3. Consult the manufacturer.
2
HC is displayed upon
power-on
1. 4-core bus connecting with
the drive board and control
bard is in poor contact.
Other parts of the inverter are
damaged.
1. Plug/unplug the 4-core
bus once again.
Consult the manufacturer.
3
“ERR23” alarm
is displayed upon
power-on.
1. The motor or the output
line is short circuited to the
earth.
The inverter is damaged.
1. Measure the insulation of
the motor and output line
with magneto-ohmmeter.
Consult the manufacturer.
4
The inverter displays
n o r m a l l y u p o n
SRZHURQ EXW ³+&´
is displayed upon
running and stops
immediately.
The fan is either damaged or
blocked.
Replace the fan.
E R R 1 4 ( m o d u l e
over heat) fault is
frequently reported.
1. The carrier frequency is set
too high.
2. The fan is damaged or the
air duct is blocked.
T h e i n t e r n a l p a r t s ( t h e r m a l
coupler or others) of the inverter
are damaged.
1. R e d u c e t h e c a r r i e r
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2. Replace the fan and clear
the air duct.
Consult the manufacturer.
6
The motor does not
rotate upon Inverter
running.
1. T h e m o t o r i s e i t h e r
damaged or blocked.
2. The parameters are set
improperly (mainly Group
F1 motor parameters).
1. R e p l a c e t h e m o t o r o r
remove the mechanical
fault.
2. Check and reset Group F1
parameters.
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