YASKAWA GA700 Technical Manual page 346

6.4 Faults
Code Name
Note:
• The drive detects this fault if phase loss occurs on the output side of the drive.
• Do a Fault Reset to clear the fault.
• Set L8-07 [Output Phase Loss Protection Sel] to enable and disable LF detection.
Code Name
LF2 Output Current Imbalance
Note:
• The drive detects this fault if there is not balance between the three phases of the output current from the PM motor.
• Do a Fault Reset to clear the fault.
Code Name
LSo Low Speed Motor Step-Out The motor code set incorrectly.
Note:
• The drive detects this fault if it detects step-out while running at low speed.
• Do a Fault Reset to clear the fault.
• LSo is a protective function that stops the motor and stops the reverse run if a motor without a motor code incorrectly detects the initial
polarity. Decrease the values set in L8-93 to L8-95 to a range in which the drive does not malfunction to quickly detect motor reversal.
Code Name
nSE Node Setup Error
Note:
Do a Fault Reset to clear the fault.
346
Causes
The output transistor in the drive is
damaged.
Causes
Phase loss occurred in the wiring on the
output side of the drive.
The output terminal screws of the drive
are loose.
There is not balance between the three
phases of the PM motor impedance.
The drive output circuit is broken.
Causes
The load is too heavy.
An external force on the load side
caused the motor to move at start.
The drive incorrectly detected the motor
magnetic pole position.
Incorrect values set in L8-93 [Low
Speed Pull-out DetectionTime], L8-94
[Low Speed Pull-out Detect Level], and
L8-95 [Low Speed Pull-out Amount].
Causes
The H1-xx = 47 [Node Setup
(CANopen)] terminal was activated
during run.
The drive received a Run command
while the Node Setup function was
active.
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Possible Solutions
• Re-energize the drive.
• 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.
Possible Solutions
Examine for wiring errors or disconnected wires on
the output side of the drive, and repair problems.
Tighten the terminal screws to the correct
tightening torque.
• Measure the Line-to-Line Resistance for each
motor phase and make sure that resistance is
equal in the three phases, and that all wires are
connected correctly.
• Replace the motor.
• Re-energize the drive.
• 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.
Possible Solutions
• Set E5-01 [PM Motor Code Selection] correctly
as specified by the motor.
• For specialized motors, refer to the motor test
report and set E5-xx correctly.
• Decrease the load.
• Replace the drive and motor with larger capacity
models.
Find and repair problems on the load side that
cause the motor to rotate from the load side.
• Set b3-01 = 1 [Speed Search at Start Selection =
Enabled].
• If the value for U6-57 [PolePolarityDeterVal] is
lower than 819, increase the value set in n8-84
[Polarity Detection Current].
Increase the values set in L8-93 to L8-95.
Possible Solutions
Stop the drive when the Node Setup function is in
use.