EC5000
- 110 - - 111 -
The diagnosis and the exclusion for the abnormalities
7
Fault
Description detail error correction
SC
Output
short circuit
(SC)
The output current of AC
drive is more than the
IGBT’s current value of
safety work
Check the three
phase of output
U.V.Wwhether
short circuit
oU
Over vol tage
(OU)
main circuit DC voltage over
OU value test voltage: 200V
grade: about 410V
400V grade: about 820V
Prolong retard time
increase braking
Unit.
◎oH1
Radiator
overheat
(Oh1)
The temperature of transistor
radiato temperature is over
allowed temperature≥OH1
test value) (about 95℃)
Check the fan
and the around
temperature.
oH2
Radiator
overheat
(Oh2)
The temperature of transistor
radiator temperature is over
allowed value(radiator
temperature≥OH2 test
value)(about 105℃)
Check the fan
and the around
temperature.
oL1
Motor
overload
(Ol1)
The output value of AC drive
is over the motor overload
capacity value
Check the setting of
C18 whether is
reasonable
oL2
AC drive
Overload
(Ol2)
The output current of AC
drive is over the motor
overload capacity value
Reduce load
capacity prolong
accelerating time.
◎oL3
Over rotation
Moment of
force testing
(Ol3)
The output current of AC
drive is over rotation moment
of force test value
Reduce load
capacity prolong
accelerating time.
EFLn
Error from
RS485 general
data wire
Error in control circuit
Check external
control circuit.
7.1List of Actions to Protect
7.1.1
List of Fault Display
EC5000
Low voltage
in main
circuit
Low voltage of main circuit
during running. Test voltsge:
about 190V or lower for 200V
grade, 380V or lower for 400V
grade.
Low voltage
in control
circuit
Low voltage of control circuit
during running.
Uu1
Contactor
error
The advance power transmitted
of AC drive during running
check power
connection wire.
Improve input
voltage.
OC
Over current
flow (OC)
AC drive output current over
OC value which is about 250%
of the rated current.
Check motor coil
resistance.
prolong accelerate
retard time. check /
motor insulation.
check with
multimeter.
Fault
Description
detail error correction
The AC drive itself has the functions of over-voltage, low voltage and
over-current alarms and protection. Once a failure occurs, the protective
actions will work, the AC drive will stop the output, the abnormal contact
will act, and the free operation of motor will stop. Please refer to the
abnormality causes and solutions according to the shown abnormity
information of AC drive. The abnormality records will be kept in the
interior storage unit of AC drive (which can record the latest 4 faults
message), and can be read on the digital operation panel or by
communication via parameter reading.
The diagnosis and the exclusion for the abnormalities
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