Protective and Diagnostic Functions
7-
9
(blink-
ing)
Over-
torque
Det
1
Overtorque 1
There
has been a current greater than
the
setting in L6-02 for longer than the
setting
in L6-03.
-
• Make
sure that the settings in L6-02
and
L6-03 are appropriate.
• Check
the mechanical system and
correct
the cause of the overtorque.
(blink-
ing)
Over-
torque
Det
2
Overtorque 2
There
has been a current greater than
the
setting in L6-05 for longer than the
setting
in L6-06.
-
• Make
sure that the current setting in
L6-05
and time setting in L6-06 are
appropriate.
• Check
the mechanical system and
correct
the cause of the overtorque.
(blink-
ing)
Under-
torq
Det
1
Undertorque 1
There
has been a current less than the
setting
in L6-02 for longer than the
setting
in L6-03.
-
• Make
sure that the settings in L6-02
and
L6-03 are appropriate.
• Check
the mechanical system and
correct
the cause of the overtorque.
(blink-
ing)
Under-
torq
Det
2
Undertorque 2
There
has been a current less than the
setting
in L6-05 for longer than the
setting
in L6-06.
-
• Make
sure that the current setting in
L6-05
and time setting in L6-06 are
appropriate.
• Check
the mechanical system and
correct
the cause of the overtorque.
(blink-
ing)
Over-
speed
Det
Overspeed
The
speed has been greater than the
setting
in F1-08 for longer than the
setting
in F1-09.
Overshooting/undershooting
are
occurring.
Adjust
the gain again.
The
reference speed is too high.
Check
the reference circuit and refer-
ence
gain.
The
settings in F1-08 and F1-09 aren't
appropriate.
Check
the settings in F1-08 and F1-09.
(blink-
ing)
PG
Open
The PG is disconnected
The
Inverter is outputting a frequency,
but
PG pulses aren't being input.
There
is a break in the PG wiring.
Fix
the broken/disconnected wiring.
The
PG is wired incorrectly.
Fix
the wiring.
Power
isn't being supplied to the PG. Supply power to the PG properly.
(blink-
ing)
Speed
Devia-
tion
Excessive Speed Deviation
The
speed deviation has been greater
than
the setting in F1-10 for longer
than
the setting in F1-11.
The
load is too large.
Reduce
the load.
The
acceleration time and decelera-
tion
time are too short.
Lengthen
the acceleration time and
deceleration
time.
The
load is locked.
Check
the mechanical system.
The
settings in F1-10 and F1-11 aren't
appropriate.
Check
the settings in F1-10 and F1-11.
Opt
External
Flt
External error detected for Com-
munications Card other than SI-K2
Continuing
operation was specified
for
EF0 (F6-03 = 3)and an external
fault
was input from the Option Card.
-
Remove
the cause of the external fault.
Table 7.2 Alarm Displays and Processing (Continued)
Display
Meaning
Probable causes
Corrective Actions
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