138
YASKAWA
TOEPC71061737D GA800 DRIVE INSTALLATION & PRIMARY OPERATION
Code
Name
Causes
Possible Solutions
The
dEv
detection level settings are incorrect.
Adjust
F1-10 [Speed Deviation Detection Level]
and
F1-11 [Speed
Deviation Detect DelayTime]
.
The load is locked up.
Examine the machine.
The holding brake is stopping the motor.
Release the holding brake.
dv1
Z Pulse Fault
The encoder option card or the encoder on the motor
side is damaged.
The encoder cable is disconnected or wired
incorrectly.
1.
Repair wiring errors and connect disconnected wires. Correctly
ground the shielded wire of the encoder cable.
2.
Re-energize the drive
3.
If the fault stays, replace the control board or the drive. For
information about replacing the control board, contact Yaskawa
or your nearest sales representative.
dv2
Z Pulse Noise Fault Detection
Noise interference along the encoder cable.
Isolate the encoder cable from the drive output line or a different
source of electrical interference.
The encoder cable is disconnected or wired
incorrectly.
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems. Correctly ground the shielded wire of
the encoder cable.
The drive is operating a motor with 24 or more poles
at zero speed.
•
Set
F1-46 = 1 [dv2 Detection Method Selection =
MechanicalAngle Detection Method]
.
•
Increase
F1-17 [Deviation 2 Detection Selection]
.
•
Increase
F1-47 [Deviation 2 Detection Level]
.
Note:
If you change the setting of
F1-47
, the sensitivity of detection
for
dv2
can decrease.
The PG option or the encoder on the motor side is
damaged.
Repair the wiring and re-energize the drive, then replace the PG
option or the encoder if the problem continues.
dv3
Inversion Detection
E5-11 [Encoder Z-Pulse Offset]
is set incorrectly.
Correctly set the value for Δθ to
E5-11
as specified by the values on
the motor nameplate.
There is a new encoder or the motor rotation direction
changed.
Do Z Pulse Offset Tuning.
An external force on the load side rotated the motor.
•
Make sure that the motor is rotating in the correct direction.
•
Find and repair problems on the load side that cause the motor to
rotate from the load side.
Noise interference along the encoder cable.
Correctly ground the shielded wire of the encoder cable.
The encoder cable is disconnected or wired
incorrectly.
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems.
The setting for
F1-05 [Encoder 1 Rotation Selection]
is the opposite of the direction of motor rotation.
Correctly connect the motor wiring for each phase (U, V, W).
The drive incorrectly detected the motor magnetic
pole position.
When
U6-57 [PolePolarityDeterVal] < 819
, increase
n8-84
[Polarity Detection Current]
. Consult the motor manufacturer for
information about maximum setting values.
n8-84 [Polarity Detection Current]
is too low.
Increase
n8-84
from the default. Consult the motor manufacturer for
information about maximum setting values.
Pole Position Detection failed.
If you are using an IPM motor, do High Frequency Injection Auto-
Tuning.
The PG option or the encoder on the motor side is
damaged.
Repair the wiring and re-energize the drive, then replace the PG
option card or the PG if the problem continues.
The drive incorrectly detected the motor magnetic
pole position.
When
U6-57 [PolePolarityDeterVal] < 819
, set
n8-84 [Polarity
Detection Current > default setting
.
dv4
Inversion Prevention Detection
An external force on the load side rotated the motor.
•
Make sure that the motor is rotating in the correct direction.
•
Find and repair problems on the load side that cause the motor to
rotate from the load side.
•
Disable detection of this fault for applications that rotate the
motor from the load side in the opposite direction of the speed
reference. The drive will not detect this fault if
F1-19 = 0
[Deviation 4 Detection Selection = Disabled]
.
E5-11 [Encoder Z-Pulse Offset]
is set incorrectly.
Correctly set the value for Δθ to
E5-11
as specified by the values on
the motor nameplate.
There is a new encoder or the motor rotation direction
changed.
Do Z Pulse Offset Tuning.
Noise interference along the encoder cable.
Correctly ground the shielded wire of the encoder cable.
The encoder cable is disconnected or wired
incorrectly.
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems.
The drive incorrectly detected the motor magnetic
pole position.
If the value for
U6-57 [PolePolarityDeterVal]
is lower than 819,
increase the value set in
n8-84 [Polarity Detection Current]
.
Consult the motor manufacturer for information about maximum
setting values.