YASKAWA CIPR-GA50C series, Technical Manual

Page: 254 / 766

7.4 Faults
254 YASKAWA SIEPC71061753A GA500 Technical Manual
Code Name Causes Possible Solutions
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.
The motor main circuit cable is too long.
•
Replace the drive with a larger capacity model.
•
Decrease C6-02 [Carrier Frequency] . Or set C6-02 = B .
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.
Code Name Causes Possible Solutions
oL3 Overtorque Detection 1
A fault occurred on the machine.
Example: The machine is locked.
Examine the machine and remove the cause of the fault.
The parameters are incorrect for the load. Adjust L6-02 [Torque Detection Level 1] and L6-03 [Torque
Detection Time 1] settings.
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.