5-7
LED display Description Possible causes Corrective action
time.
OL1
Motor over load
Motor over load:
Motor over load protection
function is enabled according
to the over load curve of
motor internal 08-05
=xxx1(Motor over protection
is enabled.).
OL2
over load of
the inverter
over load of the inverter:
Over load fault of the inverter
has occurred , but time is less
than 4 minutes (if time is over
4 minutes, this warning will be
cleared automatically.)
.The voltage setting of V/F
mode is too high, resulting in
motor over excitation.
. Motor rated current setting
(02-01) is incorrect.
. Motor load is too big.
. The voltage setting of V/F
mode is too high, and the
inverter capacity is too small.
.Motor load is too big.
.Check V/F mode .
.Check Motor rated current .
.Check the load and
operation cycle.
.Check V/Fmode .
. Replaced by higher
capacity inverter
.Check the load and the
operation cycle
CE
( flash )
communication
error
Modbus communication
error :
.when 09-07= 3, no
communication data is
received over 2 seconds.
. Connection is broken off.
. The host has stopped the
data transmission.
Check all connections and
verify all software
architecture at the client
side.
CLA
over current
protection
level A
Warning of inverter over
current:
Inverter current reaches
current protection level A
Inverter current is too big.
.Motor load is too big.
Check the load and
operation cycle.
CLB
over current
protection
level B
Warning of inverter over
current:
inverter current reaches
current protection level B
Inverter current is too big.
.Motor load is too big.
Check the load and
operation cycle.
ADL
current
feedback
protection level
Warning of inverter over
current:
inverter current reaches
current feedback protection
level
Inverter current is too big.
.Motor load is too big.
Check the load and
operation cycle.
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