
6
-6
EF3
Ext Fault S3
External fault at terminal S3
An "external fault" was input
from a multi-function input termi-
nal (S3 to S7).
Eliminate the cause of the
external fault condition.
EF4
Ext Fault S4
External fault at terminal S4
EF5
Ext Fault S5
External fault at terminal S5
EF6
Ext Fault S6
External fault at terminal S6
EF 7
Ext Fault S7
External fault at terminal S7
OPR
Oper Disconnect
Digital Operator/Monitor Con-
nection Fault
Detected when the digital opera-
tor is removed and the Inverter
receives its RUN command
through the digital operator
(b1-02=0)
The digital operator was removed
during running or the operator
cable is broken.
Check the connection of the
Digital Operator/Monitor.
CE
Memobus Com Err
MEMOBUS Communication
Error
Detected when control data was
not received correctly for two sec-
onds and H5-04 = 0 to 2 and
H5-05=1.
Connection is broken and/or the
master has stopped the communi-
cation.
Check the connections and all
user-side software configura-
tions.
BUS
Option Com Err
Option Communication Error
After initial communication was
established, the connection was
lost.
Connection is broken and/or the
master has stopped the communi-
cation.
Check the connections and all
user-side software configura-
tions.
SE1
Sequence Error 1
Detected no output contactor
answer back for S1-16 time
setting.
The output contactor or auxiliary
switch is malfunciton.
Check the output contactor.
SE2
Sequence Error 2
Detecd the output currnet
below 25% of no-load currnet
at opening motor brake.
The output contactor is opened.
Check the output contactor.
SE3
Sequence Error 3
Detecd the output currnet
below 25% of no-load currnet
during runinig.
The output contactor is opened.
Check the output contactor.
CPF00
COM-ERR(OP&INV)
Digital Operator/Monitor Com-
munication Fault 1
Communication with the digital
operator could not be established
within 5 seconds after the power
was supplied to the Inverter.
Digital operator cable was not
securely connected or digital
operator is defective and/or con-
trol borard is defective
Disconnect the Digital Opera-
tor/Monitor and then connect
it again.
Replace the Inverter.
CPU External RAM Fault
The control board is damaged.
Cycle the power to the
Replace the Inverter.
CPF01
COM-ERR(OP&INV)
Digital Operator/Monitor Com-
munication Fault 2
After communications with the
digital operator was established,
the communication stopped for 2
seconds or more.
Digital operator cable was not
securely connected or digital
operator is defective
Disconnect the Digital Opera-
tor/Monitor and then connect
it again.
The control board is damaged.
Cycle the power to the
Replace the Inverter.
Table 6.1 Fault Detection (Continued)
Display
Meaning
Probable Causes
Corrective Actions
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