YASKAWA LA700 Serie Instrucciones De Instalación Y Funcionamiento página 35

Code Name
dv8 PM Rotor Position DetectionError
EF Up/Down Command Input Error
EF3 - EF10 External Fault (Terminal Sx)
FrL Speed Reference Missing
GF Ground Fault
LF Output Phase Loss
oC Overcurrent
YASKAWA TOMPYEULA7002A LA700 Series Installation and Operation Instruction
Causes
When A1-02 = 7 [CLV/PM], the motor data set in
the E5-xx [PM Motor Settings] parameters are
incorrect.
Motor characteristics changed.
Parameters that control Initial Pole Search are set
incorrectly (set up may be incomplete).
Parameters for the motor encoder are set to the
wrong values (set up may be incomplete).
The brake released during Initial Pole Search or
during power loss.
You cannot do Initial Pole Search on the motor.
An Up command and a Down command were input
at the same time for longer than 0.5 s.
MFDI terminal Sx caused an external fault through
an external device.
External Fault [H1-xx = 20 to 2F] is set to MFDI
terminal, but the terminal is not in use.
The drive received an Up/Down command when
d1-18 = 1 [Speed Reference Selection Mode = High
speed has priority], H1-xx ≠ 53 [MFDI Function
Selection ≠ Leveling Speed], and no speed is
selected at start.
Overheating caused damage to the motor or the
motor insulation is not satisfactory.
The motor main circuit cable is contacting ground
to make a short circuit.
An increase in the stray capacitance of the cable and
the ground terminal caused an increase in the
leakage current.
There was a problem with the drive hardware.
The motor main circuit cable is disconnected.
There is a disconnection in the motor coil winding.
The screws on the drive output terminals are loose.
The rated output current of the motor is less than
5% of the continuous rated output current of the
drive.
You are trying to use a single-phase motor.
The output transistor in the drive is damaged.
The load is too heavy.
The motor main circuit cable is contacting ground
to make a short circuit.
A short circuit or ground fault on the drive output
side caused damage to the output transistor of the
drive.
Possible Solutions
Refer to the motor nameplate or test report and set E5-xx
correctly.
• Do the setup process again.
• Do Stationary Auto-Tuning or Initial Pole Search Auto-
Tuning.
• Examine the brake sequence.
• You must keep the brake applied during Initial Pole Search and
when there is an interruption of the power supply.
Use a PG option card that is compatible with both the drive and
an absolute encoder.
Examine the Up and Down command sequence and correct the
problem.
• Find the device that caused the external fault and remove the
cause.
• Correctly set the MFDI.
• Examine the settings for d1-18 and H1-03 to H1-10 [Terminal
S3 to S10 Function Selection] to make sure that the selected
speed selection method aligns with the elevator controller
sequence.
• Make sure that the elevator controller is connected correctly.
• Make sure the elevator controller selects the speed correctly.
Measure the motor insulation resistance, and replace the motor if
there is electrical conduction or unserviceable insulation.
• Examine the motor main circuit cable for damage, and repair
short circuits.
• Measure the resistance between the motor main circuit cable
and the ground terminal. If there is electrical conduction,
replace the cable.
• If the wiring length of the cable is more than 100 m, decrease
the carrier frequency.
• Decrease the stray capacitance.
Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
Connect motor main circuit cable wiring. Correct wiring errors in
the main circuit drive input power.
If a coil is disconnected, measure the motor Line-to-Line
Resistance and replace the motor.
Tighten the terminal screws to the correct tightening torque.
Examine the drive capacity or the motor output to be applied.
The drive cannot operate a single-phase 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.
• Measure the current flowing into the motor.
• Replace the drive with a larger capacity model if the current
value is more than the continuous rated output current.
• Decrease the load or replace with a larger drive to prevent
sudden changes in the current level.
• Examine the motor main circuit cable for damage, and repair
short circuits.
• Measure the resistance between the motor main circuit cable
and the ground terminal. If there is electrical conduction,
replace the cable.
• Make sure that there is not a short circuit in terminal B1 and
terminals U/T1, V/T2, and W/T3. Make sure that there is not a
short circuit in terminals - and terminals U/T1, V/T2, and W/
T3.
• If there is a short circuit, contact Yaskawa or your nearest sales
representative.
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