Omron VARISPEED F7 User Manual page 346

Display
Overtorque Detection 1
The Inverter's output current (V/f
OL3
control) or the output torque (Vec-
Overtorque Det 1
tor control) exceeded L6-02 for
(flashing)
longer than the time set in
L6-03 and L6-01 = 1 or 2
Overtorque Detection 1
The Inverter's output current (V/f
OL4
control) or the output torque (Vec-
Overtorque Det 1
tor control) exceeded L6-02 for
(flashing)
longer then the time set in
L6-03 and L6-01 = 1 or 2
Undertorque Detection 1
The Inverter's output current (V/f
UL3
control) or the output torque (Vec-
Undertorque Det 1
tor control) fell below L6-02 for
(flashing)
longer then the time set in L6-03
and L6-01 = 5 or 6.
Undertorque Detection 2
The Inverter's output current (V/f
UL4
control) or the output torque (Vec-
Undertorque Det 2
tor control) fell below L6-05 for
(flashing)
longer then the time set in L6-06
and L6-04 = 5 or 6.
Overspeed Alarm
Detected when A1-02 = 1 or 3
OS and F1-03 = 3.
Overspeed Det The motor speed feedback
(flashing) (U1-05) exceeded the value set in
F1-08 for a time longer than the
setting in F1-09.
PG Disconnection
Detected when F1-02 = 3 and A1-
PGO
02 = 1 or 3.
PG Open
Detected when no PG (encoder)
(flashing)
pulses are received for a time
longer than the setting in F1-14
Excessive Speed Deviation
Detected when F1-04 = 3 and
DEV
A1-02 = 1 or 3.
Speed Deviation
The speed deviation is greater
(flashing)
than the setting in F1-10 for
longer than the setting in F1-11.
EF0
Communication Option Card
Opt External Flt
External Fault
(flashing)
Table 7.2 Alarm Detection
Meaning Probable causes
Motor was overloaded
Motor was overloaded
Motor was underloaded
Motor was underloaded
Overshooting/undershooting are
occurring.
The reference was too high.
The settings in F1-08 and F1-09
are not appropriate.
There is break in the PG wiring.
The PG is wired incorrectly.
Power isn't being supplied to the
PG.
The load is too large.
The acceleration time and decel-
eration time are too short.
The load is locked.
The settings in F1-10 and F1-11
are not appropriate.
An external fault condition was
present, input from a communica-
tion option card.
Corrective Actions
Ensure the values in L6-02
and L6-03 are appropriate.
Check application/machine
status to eliminate fault.
Ensure the values in L6-05
and L6-06 are appropriate.
Check application/machine
status to eliminate fault.
Ensure the values in L6-02
and L6-03 are appropriate.
Check application/machine
status to eliminate fault.
Ensure the values in L6-05
and L6-06 are appropriate.
Check application/machine
status to eliminate fault.
Adjust the ASR settings in the
C5 parameter group.
Check the reference circuit
and reference gain.
Check the settings in F1-08
and F1-09
Fix the broken/disconnected
wiring.
Fix the wiring
Supply power to the PG prop-
erly.
Reduce the load.
Lengthen the acceleration time
and deceleration time.
Check the mechanical system.
Check the settings in F1-10
and F1-11.
Check for an external fault
condition.
Verify the parameters.
Verify communication signals
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