Omron SYSDRIVE 3G3RV, User Manual

Page: 367 / 446

Protective and Diagnostic Functions
7-
5
HSB-OL
High-slip Braking OL
The
output frequency did not change
for
longer than the time set in N3-04.
The
inertia returned to the load is too
large.
• Make
sure the load is an inertial
load.
• Set
the system so that the decel-
eration
time that does not pro-
duce
0 V is 120 s or less.
Undertorq
Det
1
Undertorque Detected 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 appropri-
ate.
• Check
the mechanical system
and
correct the cause of the
overtorque.
Undertorq
Det
2
Undertorque Detected 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 set-
ting
in L6-05 and time setting in
L6-06
are appropriate.
• Check
the mechanical system
and
correct the cause of the
overtorque.
Overspeed
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
reference
gain.
The
settings in F1-08 and F1-09 aren't
appropriate.
Check
the settings in F1-08 and
F1-09.
PG
Open
PG Disconnection Detected
PG
pulses were input when the
Inverter
was outputting a frequency
(soft
start output ≥ E1-09).
There
is a break in the PG wiring.
Fix
the broken/disconnected wir-
ing.
The
PG is wired incorrectly.
Fix
the wiring.
Power
isn't being supplied to the PG.
Supply
power to the PG properly.
-
Check
for open circuit when using
brake
(motor).
Speed
Deviation
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 heavy.
Reduce
the load.
The
acceleration time and deceleration
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.
-
Check
for open circuit when using
brake
(motor).
Out
of
Control
Control Fault
The
torque limit was reached continu-
ously
for 3 seconds or longer during a
deceleration
stop during open-loop
vector
control.
- Check
the motor constants.
Feedback
Loss
PID Feedback Reference Lost
A
PID feedback reference loss was
detected
(b5-12 = 2) and the PID feed-
back
input was less than b5-13 (PID
feedback
loss detection level) for
longer
than the time set in b5-14 (PID
feedback
loss detection time).
- -
Table 7.1 Fault Displays and Processing (Continued)
Display Meaning Probable Causes Corrective Actions