YASKAWA GA800 Series, Maintenance & Troubleshooting

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2.4 Fault
106 YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
Code Name Causes Possible Solutions
The electronic thermal protector qualities and the
motor overload properties do not align. • Examine the motor qualities and set L1-01 [Motor Overload
(oL1) Protection] correctly.
• Connect a thermal overload relay to the motor.
The electronic thermal protector is operating at an
incorrect level. Set E2-01 [Motor Rated Current (FLA)] correctly to the value
specified by the motor nameplate.
There is increased motor loss from overexcitation
operation. • Lower the value set in n3-13 [OverexcitationBraking (OEB)
Gain] .
• Set L3-04 ≠ 4 [Stall Prevention during Decel ≠ Overexcitation/
High Flux] .
• Set n3-23 = 0 [Overexcitation Braking Operation = Disabled] .
The speed search-related parameters are set
incorrectly.
•
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.
Phase loss in the input power supply is causing the
output current to change. Make sure that there is no phase loss, and repair problems.
Overload occurred during overexcitation deceleration. • Decrease the value set in n3-13 [OverexcitationBraking (OEB)
Gain] .
•
Decrease the value set in n3-21 [HSB Current Suppression
Level] .
Note:
• The drive detects this fault if the electronic thermal protector of the drive started the motor overload protection.
• Do a Fault Reset to clear the fault.
• L5-07 [Fault Reset Enable Select Grp1] disables the Auto Restart function.
Code Name Causes Possible Solutions
oL2 Drive Overload
The load is too large. Decrease the load.
The acceleration/deceleration times or cycle times are
too short.
•
Examine the acceleration/deceleration times and the motor start/
stop frequencies (cycle times).
• Increase the values set in C1-01 to C1-08 [Acceleration/
Deceleration Times] .
The V/f pattern does not fit the motor qualities. • Examine the ratios between the V/f pattern frequency and
voltage. Decrease the voltage if it is too high compared to the
frequency.
• Adjust E1-04 to E1-10 [V/f Pattern Parameters] . Decrease the
values set in E1-08 [Mid Point A Voltage] and E1-10 [Minimum
Output Voltage] . For motor 2, adjust E3-04 to E3-10 .
Note:
If the values set in E1-08 and E1-10 are too low, the overload
tolerance will decrease at low speeds.
The drive capacity is too small. Replace the drive with a larger capacity model.
Overload occurred while running at low speed. • Decrease the load when running at low speed.
•
Replace the drive with a larger capacity model.
•
Decrease the value set in C6-02 [Carrier Frequency Selection] .
The torque compensation gain is too large. Decrease the value set in C4-01 [Torque Compensation Gain] to
make sure that the motor does not stall.
The speed search-related parameters are set
incorrectly.
•
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.
Phase loss in the input power supply is causing the
output current to change. • Correct errors with the wiring for main circuit drive input power.
• Make sure that there is no phase loss, and repair problems.
Overload occurred during overexcitation deceleration. • Decrease the value set in n3-13 [OverexcitationBraking (OEB)
Gain] .
• Decrease the value set in n3-21 [HSB Current Suppression
Level] .
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.