YASKAWA GA800 Series, Maintenance & Troubleshooting

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roubleshooting
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2.4 Fault
YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting 107
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.
Code Name Causes Possible Solutions
oL4 Overtorque Detection 2
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 L6-05 [Torque Detection Level 2] and L6-06 [Torque
Detection Time 2] settings.
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 Causes Possible Solutions
oL5 Mechanical Weakening Detection 1
The drive detected overtorque as specified by the
conditions for mechanical weakening detection set in
L6-08 [Mechanical Fatigue Detect Select] .
Do a deterioration diagnostic test on the machine side.
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 Causes Possible Solutions
oL7 High Slip Braking Overload The load inertia is too large.
An external force on the load side rotated the motor.
Something is preventing deceleration on the load
side.
•
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.
The value set in n3-04 [HSB Overload Time] is too
small.
• Increase the value set in n3-04 .
• Connect a thermal overload relay to the motor, and set n3-04 =
1200 s (maximum value) .
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.
Code Name Causes Possible Solutions
oPr Keypad Connection Fault
The keypad is not securely connected to the
connector on the drive. Examine the connection between the keypad and the drive.
The connection cable between the drive and the
keypad is disconnected. • Remove the keypad and then reconnect it.
• Replace the cable if damaged.
Note:
•
The drive detects this fault if these conditions are correct:
– o2-06 = 1 [Keypad Disconnect Detection = Enabled] .
– b1-02 = 0 [Run Command Selection 1 = Keypad] , or the drive is operating in LOCAL Mode with the keypad.
• Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
oS Overspeed
There is overshoot. • Decrease C5-01 [ASR Proportional Gain 1] and increase C5-02
[ASR Integral Time 1] .
•
Adjust the pulse train gain with H6-02 to H6-05 [Pulse Train
Input Setting Parameters] .
There is an incorrect number of PG pulses set in the
drive. Set H6-02 [Terminal RP Frequency Scaling] to the pulse train
frequency during 100% reference (maximum motor rotation speed).
The oS detection level is set incorrectly. Adjust F1-08 [Overspeed Detection Level] and F1-09 [Overspeed
Detection Delay Time] .