Omron VARISPEED E7 User Manual page 284

Display
Overload Detection
The Inverter's output current
(flashing)
exceeded L6-02 for longer than
OL3
the time set in L6-03 and
Overtorque Det.1
L6-01 = 1 or 2.
(flashing)
Loss of Load Detection
Inverter's output current was
(flashing)
below L6-02 for longer then the
LL3 time set in L6-03 and L6-01=5 or
6.
Loss of Load Det
External Fault Input from Com-
(flashing)
munication Option Card (Alarm
only)
EF0
(F6-03=3)
Opt External Flt
(flashing)
(flashing)
External fault at terminal S3
(Alarm only)
EF3
Ext Fault S3
(flashing)
(flashing)
External fault at terminal S4
(Alarm only)
EF4
Ext Fault S4
(flashing)
(flashing)
External fault at terminal S5
(Alarm only)
EF5
Ext Fault S5
(flashing)
(flashing)
External fault at terminal S6
(Alarm only)
EF6
Ext Fault S6
(flashing)
(flashing)
External fault at terminal S7
(Alarm only)
EF7
Ext Fault S7
(flashing)
PI Feedback Lost
This alarm occurs when PI feed-
back loss detection is pro-
(flashing)
grammed to alarm (b5-12=1) and
the PI feedback fell below the PI
Feedback Loss Detection Level
FBL
(b5-13) for the PI Feedback Loss
Feedback Loss
Detection (b5-14).
Table 7.2 Alarm Content
Meaning Probable Causes
Motor was overloaded
Motor lost its load
An external fault condition was
present, input from a communica-
tion option card while F6-03 is
set to Alarm only.
An external fault was input from
a multi-function digital input
(H1-01 to H1-05) that is pro-
grammed for external fault func-
tion that gives an alarm only and
continues to run the motor.
PI feedback source (e.g. trans-
ducer, sensor, building automa-
tion signal) is not installed
correctly or is not working.
Protective and Diagnostic Functions
Corrective Actions
• Ensure that the values in
L6-02 and L6-03 are appro-
priate
• Check the application/
machine status to eliminate
the fault.
• Make sure that the settings
in L6-02 and L6-03 appro-
priate
• Check the application/
machine status to eliminate
the alarm.
• Check for an external fault
condition.
• Verify the parameter set-
tings.
• Verify communication sig-
nals.
Remove the cause of the
external fault.
• Check the PI feedback sig-
nal source for correct opera-
tion.
• Check the wiring of the PI
feedback signal.
7-9