LS Electric L7S Drive

LS Electric L7S Drive Fault Codes:

Fault Code and MeaningCause and Remedy
AL-10
IPM fault
Cause:

Over current (H/W).



Remedy:

  • Check drive output incorrect wiring or encoder incorrect wiring.

  • Check Motor ID, Drive ID, and Encoder settings.

  • Determine whether there is a conflict or binding in the equipment.
AL-11
IPM temperature
Cause:

IPM overheating.



Remedy:

  • Check drive output incorrect wiring, encoder incorrect wiring.

  • Check Motor ID, Drive ID, Encoder settings.

  • Determine whether there is a conflict or binding in the equipment.
AL-14
Over current
Cause:

Over current (S/W).



Remedy:

  • Check drive output incorrect wiring, encoder incorrect wiring.

  • Check Motor ID, Drive ID, Encoder settings.

  • Determine whether there is a conflict or binding in the equipment.
AL-15
Current Offset
Cause:

Current offset error.



Remedy:

  • Check if [St-23], [St-24] are more than 10% of the rated current.

  • Replace the drive.
AL-16
Over Current(/CL)
Cause:

Over current (H/W).



Remedy:

  • Check drive output incorrect wiring, encoder incorrect wiring.

  • Check Motor ID, Drive ID, Encoder settings.

  • Determine whether there is a conflict or binding in the equipment.
AL-21
Continuous overload
Cause:

Continuous overload.



Remedy:

  • Determine whether there is a conflict or binding in the equipment.

  • Load condition inspection, Brake operation status check.

  • Check drive output incorrect wiring, encoder incorrect wiring.

  • Check Motor ID, Drive ID, Encoder settings.
AL-22
Room Temperature
Cause:

Drive overheating.



Remedy:

  • Check drive internal temperature [St-19].

  • Check Cooling fan installation and load condition inspection.
AL-23
Regen. Overload
Cause:

Regenerative overload.



Remedy:

  • Check Input voltage, regeneration braking resistor and wiring.

  • Drive replacement.
AL-24
Motor Cable Open
Cause:

Motor disconnection.



Remedy:

  • Check Motor wiring.
AL-30
Encoder Comm.
Cause:

Serial encoder communication error.



Remedy:

  • Check for incorrect wiring of the serial encoder cable.
AL-31
Encoder Cable Open
Cause:

Encoder cable open.



Remedy:

  • Check whether cable is disconnected.
AL-32
Encoder Data Error
Cause:

Encoder data error.



Remedy:

  • Check [P0-02] Setting value.

  • Check encoder wiring.
AL-33
Motor Setting Error
Cause:

Motor ID setting error.



Remedy:

  • Check [P0-00] setting value.
AL-34
Encoder Z PHASE Open
Cause:

Encoder Z phase disconnection.



Remedy:

  • Check whether cable is disconnected.
AL-35
Low Battery Error
Cause:

Low Battery Error.



Remedy:

  • Back-up battery low voltage when using absolute encoder: Battery Replacement.

  • Note: After replacing the battery, power is re-applied and origin operation is required. (Applies from S/W Ver 1.28).
AL-36
Preset Error
Cause:

Encoder initialization.



Remedy:

  • Back-up battery replacement when using absolute encoder.

  • Lack of voltage and first coupling of encoder.

  • Note: After replacing the battery and alarm reset, power is re-applied and origin operation is required.
AL-40
Under Voltage
Cause:

Low Voltage.



Remedy:

  • Check input voltage.

  • Check power wiring.
AL-41
Over Voltage
Cause:

Over voltage.



Remedy:

  • Check Input voltage.

  • Check braking resistor damage and wiring.

  • Excessive regenerative operation, check regenerative resistor.
AL-42
RS-T Power Fail
Cause:

Main power error.



Remedy:

  • Check power supply wiring and power supply.
AL-43
Control Power Fail
Cause:

Control power error.



Remedy:

  • Check power supply wiring and power supply.
AL-50
Over Speed Limit
Cause:

Over speed.



Remedy:

  • Check encoder error, encoder setting value, encoder wiring.

  • Check gain setting, motor wiring, motor ID.

  • Check electrical gear ratio, speed command scale.
AL-51
Position Following
Cause:

Excessive positional error.



Remedy:

  • Check the position command pulse excessive.

  • Check [P4-11] setting value, wiring and limit contact.

  • Check gain setting value, encoder setting, and electrical gear ratio setting.

  • Check equipment restraints and load conditions.
AL-53
Over Pulse CMD
Cause:

Pulse command frequency error.



Remedy:

  • Check pulse command frequency from upper controller.

  • Check Command pulse type.
AL-54
Speed Deviation
Cause:

Excessive speed error.



Remedy:

  • Check drive output miswiring, encoder miswiring.

  • Check equipment restraint and load status.
AL-55
Motor Over Run
Cause:

Runaway motor.



Remedy:

  • Check drive output miswiring, encoder miswiring.

  • Check equipment restraint and load status.
AL-63
Parameter Checksum
Cause:

Parameter error.



Remedy:

  • Check parameter values.
AL-64
Parameter Range
Cause:

Parameter range error.



Remedy:

  • Check parameter values.
AL-71
Invalid Factory Setting
Cause:

Factory setting error.



Remedy:

  • Check parameter values.
AL-72
GPIO Setting
Cause:

Output setting error.



Remedy:

  • Check parameter values.
W-01
RST_PFAIL
Cause:

Main power source loss.



Remedy:

  • Main power is not applied when [P0-06] DIGIT2 is set to 1.
W-02
LOW_BATT
Cause:

Low battery.



Remedy:

  • When applying the absolute value encoder, the output voltage of the encoder backup battery is insufficient.
W-04
OV_TCMD
Cause:

Excessive torque command.



Remedy:

  • A command exceeding the maximum set torque was input.
W-08
OV_VCMD
Cause:

Excessive speed command.



Remedy:

  • A command exceeding the maximum set speed was input.
W-10
OV_LOAD
Cause:

Overload warning.



Remedy:

  • The maximum setting overload [P0-13] setting range has been reached.
W-20
SETUP
Cause:

Capacity selection.



Remedy:

  • The motor current capacity is greater than the drive current capacity.
W-40
UD_VTG
Cause:

Low battery warning (DC-link Low Voltage).



Remedy:

  • When [P0-06] DIGIT2 setting is 1, DC-link voltage is less than 190V.
W-80
EMG
Cause:

EMG Contact.



Remedy:

  • Check I/O wiring and [P2-09] set value.