Autotuning Faults - YASKAWA CIMR-MC5A20P4 Instruction Manual

6.2.3 Autotuning Faults

D
D
D
Fault Display
Data Invalid
(Motor data fault)
ALARM: Over Load
(Excessive tuning load) (Excessive tuning load)
Motor speed Motor speed
(Motor speed fault)
Accelerate
(Acceleration fault) (Acceleration fault)
Rated Slip
(Rated slip fault)
Saturation -1
(Iron core saturation coefficient
1 fault)
Saturation -2
(Iron core saturation coefficient
2 fault)
Resistance
(Line-to-line resistance fault)
No-load Current
(No-load current fault)
Tune Aborted
Minor Fault:
Tune Aborted
V/f Over Setting
(Displayed after the completion (Displayed after the completion
of autotuning)
One of the fault messages in the following table will be displayed if a fault occurs during autotuning
and the motor will stop. In this case, determine the cause of the fault, correct it, and perform autotuning
again.
The fault display can be cleared by pressing the MENU Key.
The motor constants will revert to their default settings if a fault occurs. Set these constants again be-
fore starting autotuning again.
Table
6.2 Troubleshooting Autotuning Faults for Open-loop Vector Control
Probable Cause
There was a fault in the rela-
There was a fault in the data tionship between the rated
set during autotuning. frequency, rated speed, and
number of poles.
A load is connected to the
motor.
There was a setting fault dur-
The effective load factor ex-
ing autotuning.
ceeded 20% during autotun-
ing. ing
There is a motor bearing
problem.
There is a broken/discon-
nected motor power wire.
The torque reference value
exceeded 100% during auto- exceeded 100% during auto
A load is connected to the
tuning.
motor.
The torque limit function is
operating.
The acceleration time is too
The motor doesn't accelerate
short.
within the prescribed time.
A load is connected to the
motor.
The rated slip setting can't
A load is connected to the
be tuned within the pre-
motor.
scribed time.
The rated current setting isn't
correct.
The core-saturation coeffi-
cients can't be tuned within cients can't be tuned within
the prescribed time.
There is a broken/discon-
nected motor power wire.
The rated current setting isn't
The motor terminal resist-
correct.
ance or no-load current set- ance or no-load current set-
ting can't be tuned within the
There is a broken/discon-
prescribed time.
nected motor power wire.
A minor Inverter fault oc-
---
curred.
Rated voltage and rated fre-
quency settings are not cor-
Torque reference exceeded
rect.
100%, and no- -load current 100%, and no- -load current
exceeded 70%.
The load is connected to the
motor.
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6.2 O pen-loop Vector Control
Remedy
Change the settings to conform to the follow-
ing equation:
Rated speed < 120 Motor frequency/Num-
ber of poles
Remove the load.
Check the rated current setting. Change if
necessary.
Turn the Inverter off and rotate the motor by
hand.
Replace the motor if it doesn't turn smoothly.
Check and replace wiring components if nec-
essary.
Remove the load.
Initialize the torque limit constants (H7-01 to
H7-04).
Increase acceleration time 1 (C1-01).
Remove the load.
Remove the load.
Check and change the setting if necessary.
Check and replace wiring components if nec-
essary.
Check and change the setting if necessary.
Check and replace wiring components if nec-
essary.
Check the minor fault indicated in the boxes
in the display shown at the left.
Check the setting and correct any problems.
Disconnect the motor from the load.
6