Omron Q2A Series Technical Manual page 280

7.5 Minor Faults/Alarms
Code Name
Note:
• The drive detects this fault if the motor overheat signal that was entered to an analog input terminal A3 is more than the alarm detection level when H3-06 = 16 [AI3
Function Selection = Motor Temperature (PTC Input)].
• If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
• If the drive detects this error, it will operate the motor as specified by the stopping method set in L1-03 [Motor oH AL Reaction Select].
Code Name
oL3 Overtorque 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.
• If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
• Set the conditions that trigger the minor fault using L6-01 [Trq Det1 Select].
Code Name
oL4 Overtorque 2
Note:
• The drive detects this error if the drive output current is more than the level set in L6-05 for longer than L6-06.
• If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
• Set the conditions that trigger the minor fault using L6-04 [Trq Det2 Select].
Code Name
oL5 Mechanical Weakening Detection 1
Note:
• If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
• If the drive detects this minor fault, it will operate the motor as specified by the Stopping Method set in L6-08.
Code Name
oS Overspeed
Note:
• The drive detects this error if the motor speed is more than the value set in F1-08 for longer than F1-09.
• If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
• If the drive detects this error, it will operate the motor as specified by the Stopping Method set in F1-03 [Overspeed Detection Selection].
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Causes
The motor has overheated.
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 [MechF Enable].
Causes
There is overshoot.
There are an incorrect number of PG pulses set in
the drive.
The oS detection level is set incorrectly.
Possible Solutions
• Check the load level, acceleration/deceleration time, and motor
start/stop frequency (cycle time).
• Decrease the load.
• Increase the values set in Acceleration/Deceleration Times C1-
01 to C1-08.
• Set E2-01 [Mot Rated Current (FLA)] correctly to the value
specified by the motor nameplate.
• Make sure that the motor cooling system is operating correctly,
and repair or replace it if it is damaged.
• Adjust V/f Pattern Parameters E1-04 to E1-10. For motor 2,
adjust E3-04 to E3-10. Decrease the values set in E1-08 [Mid
A Voltage] and E1-10 [Min Output Voltage].
Note:
If the values set in E1-08 and E1-10 are too low, the load
tolerance will decrease when operating the drive in the low
speed range.
Possible Solutions
Examine the machine and remove the cause of the fault.
Adjust L6-02 [Trq Det1 Level] and L6-03 [Trq Det1 Time]
settings.
Possible Solutions
Examine the machine and remove the cause of the fault.
Adjust L6-05 [Trq Det2 Level] and L6-06 [Trq Det2 Time]
settings.
Possible Solutions
Do a deterioration diagnostic test on the machine side.
Possible Solutions
• Decrease C5-01 [ASR PGain 1] and increase C5-02 [ASR
ITime 1].
• Adjust the pulse train gain with Pulse Train Input Setting
Parameters H6-02 to H6-05 [PI Frequency Scale to PI Filter
Time].
Set H6-02 [PI Frequency Scale] to the pulse train frequency
during 100% reference (maximum motor rotation speed).
Adjust F1-08 [Overspeed Level] and F1-09 [Overspeed Delay
Time].
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual