YASKAWA GA800 Technical Reference page 383

Code Name
Note:
• The drive detects this fault if the electronic thermal protector of the drive started the drive overload protection.
• Do a Fault Reset to clear the fault.
• L5-07 [Fault Reset Enable Select Grp1] disables the Auto Restart function.
Code Name
oL3 Overtorque Detection 1
Note:
• The drive detects this fault if the drive output current is more than the level set in L6-02 for longer than L6-03.
• Do a Fault Reset to clear the fault.
• If the drive detects this fault, it will operate the motor as specified by the Stopping Method set in L6-01 [Torque Detection Selection 1].
• L5-07 [Fault Reset Enable Select Grp1] disables the Auto Restart function.
Code Name
oL4 Overtorque Detection 2
Note:
• The drive detects this fault if the drive output current is more than the level set in L6-05 for longer than L6-06.
• Do a Fault Reset to clear the fault.
• If the drive detects this fault, it will operate the motor as specified by the Stopping Method set in L6-04 [Torque Detection Selection 2].
• L5-07 [Fault Reset Enable Select Grp1] disables the Auto Restart function.
Code Name
oL5 Mechanical Weakening Detection 1
Note:
• Do a Fault Reset to clear the fault.
• If the drive detects this fault, it will operate the motor as specified by the Stopping Method set in L6-08.
Code Name
oL7 High Slip Braking Overload
Note:
• The drive detects this fault if the output frequency is constant for longer than n3-04.
• Do a Fault Reset to clear the fault.
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Causes
The torque compensation gain is too large.
The speed search-related parameters are set
incorrectly.
Phase loss in the input power supply is causing the
output current to change.
Overload occurred during overexcitation deceleration. • Decrease the value set in n3-13 [OverexcitationBraking (OEB)
Causes
A fault occurred on the machine.
Example: The machine is locked.
The parameters are incorrect for the load.
Causes
A fault occurred on the machine.
Example: The machine is locked.
The parameters are incorrect for the load.
Causes
The drive detected overtorque as specified by the
conditions for mechanical weakening detection set in
L6-08 [Mechanical Fatigue Detect Select].
Causes
The load inertia is too large.
An external force on the load side rotated the motor.
Something is preventing deceleration on the load
side.
The value set in n3-04 [HSB Overload Time] is too
small.
Possible Solutions
Decrease the value set in C4-01 [Torque Compensation Gain] to
make sure that the motor does not stall.
• Examine the settings for all speed search-related parameters.
• Adjust b3-03 [Speed Search Deceleration Time].
• Set b3-24 = 1 [Speed Search Method Selection = Speed
Estimation] after Auto-Tuning.
• Correct errors with the wiring for main circuit drive input power.
• Make sure that there is no phase loss, and repair problems.
Gain].
• Decrease the value set in n3-21 [HSB Current Suppression
Level].
Possible Solutions
Examine the machine and remove the cause of the fault.
Adjust L6-02 [Torque Detection Level 1] and L6-03 [Torque
Detection Time 1] settings.
Possible Solutions
Examine the machine and remove the cause of the fault.
Adjust L6-05 [Torque Detection Level 2] and L6-06 [Torque
Detection Time 2] settings.
Possible Solutions
Do a deterioration diagnostic test on the machine side.
Possible Solutions
• Decrease deceleration times in C1-02, C1-04, C1-06, and C1-08
[Deceleration Times] for applications that do not use High Slip
Braking.
• Use a braking resistor to decrease the deceleration time.
• Increase the value set in n3-04.
• Connect a thermal overload relay to the motor, and set n3-04 =
1200 s (maximum value).
7.4 Fault
7
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