Omron VARISPEED L7 Manual page 251

Display
CF
Out of Control
EF0
Opt External Flt
EF3
Ext Fault S3
EF4
Ext Fault S4
EF5
Ext Fault S5
EF6
Ext Fault S6
EF 7
Ext Fault S7
CE
Memobus Com Err
BUS
Option Com Err
SE1
Sequence Error 1
SE2
Sequence Error 2
7
SE3
Sequence Error 3
Ref Missing
FRL
CPF00
COM-ERR(OP&INV)
CPF01
COM-ERR(OP&INV)
6
7-
Table 7.1 Resetable Faults
Meaning
Control Fault
A torque limit was reached continu-
ously for 3 seconds or longer during a
deceleration stop in Open Loop Vector
control.
External fault input from Communica-
tions Option Card
External fault at terminal S3
External fault at terminal S4
External fault at terminal S5
External fault at terminal S6
External fault at terminal S7
MEMOBUS Communication Error
Detected when control data was not
received correctly for two seconds, H5-
04 is set to 0,1 or 2 and H5-05 is set to
1.
Option Communication Error
After initial communication has been
established, the connection got lost.
Detected no output contactor answer
back for S1-16 time setting.
The output current at start was below
25% of no-load current.
The output current during run was
below 25% of no-load current.
No speed was selected before the
inverter start.
Table 7.2 Not Resetable Faults
Digital Operator/LED Monitor Com-
munication Fault 1
Communication with the digital opera-
tor could not be established within 5
seconds after the power was supplied to
the Inverter.
CPU External RAM Fault
Digital Operator/LED Monitor Com-
munication Fault 2
After communications with the digital
operator was established, the communi-
cation stopped for 2 seconds or more.
Probable Causes
Motor parameters were not set prop-
erly.
An external fault condition was present,
input from a communication option
card.
An "external fault" was input from a
multi-function input terminal (S3 to
S7).
Connection is broken and/or the master
has stopped the communication.
Connection is broken and/or the master
has stopped the communication.
The output contactor or auxiliary
switch has a malfunction.
The output contactor was not closed at
start.
The output contactor was opened dur-
ing run.
A start signal was given and no speed
was selected when d1-18 = 1 and
H1-
K83.
Digital operator cable was not securely
connected or digital operator is defec-
tive and/or control board is defective
The control board is damaged.
Digital operator cable is not properly
connected or the digital operator is
defective
The control board is damaged.
Corrective Actions
Check the motor parameters.
Check for an external fault condi-
tion.
Verify the parameters.
Verify communication signals
Eliminate the cause of the external
fault condition.
Check the connections and all PLC-
side software configurations.
Check the connections and all PLC-
side software configurations.
Check the output contactor.
Check the output contactor.
Check the output contactor.
Check the speed selection/start
sequence.
Disconnect the Digital Operator/
LED Monitor and then connect it
again.
Replace the Inverter.
Cycle the Inverter power supply.
Replace the Inverter.
Disconnect the Digital Operator/
LED Monitor and then connect it
again.
Cycle the Inverter power supply.
Replace the Inverter.