Omron Q2A Series Technical Manual page 279

Code Name
LT-1 Cooling Fan Maintenance Time
Note:
When the estimated performance life is expired, the terminal assigned to H2-01, H2-02, and H2-03 =63 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM
Funct Selection = Maintenance] will be ON.
Code Name
LT-2 Capacitor Maintenance Time
Note:
When the estimated performance life is expired, the terminal assigned to H2-01, H2-02, and H2-03 = 63 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-
4CM Funct Selection = Maintenance] will be ON.
Code Name
LT-3 SoftChargeBypassRelay
MainteTime
Note:
When the estimated performance life is expired, the terminal assigned to H2-01, H2-02, and H2-03 = 63 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-
4CM Funct Selection = Maintenance] will be ON.
Code Name
LT-4 IGBT Maintenance Time (50%)
Note:
When the estimated performance life is expired, the terminal assigned to H2-01, H2-02, and H2-03 = 63 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-
4CM Funct Selection = Maintenance] will be ON.
Code Name
oH Heatsink Overheat
Note:
• The drive detects this error if the heatsink temperature of the drive is more than L8-02.
• 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 stopping method for this fault in L8-03 [Overheat Pre-Alarm Selection].
Code Name
oH2 External Overheat (H1-XX=7D)
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.
Code Name
oH3 Motor Overheat (PTC Input)
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Causes
The cooling fan is at 90% of its expected
performance life.
Causes
The capacitors for the main circuit and control
circuit are at 90% of expected performance life.
Causes
The soft charge bypass relay is at 90% of its
expected performance life.
Causes
The IGBT is at 50% of its expected performance
life.
Causes
The ambient temperature is high and the heatsink
temperature is more than the L8-02 [Overheat Alm
Level].
There is not sufficient airflow around the drive.
The internal cooling fan or fans have stopped.
Causes
An external device sent an oH2.
Causes
The thermistor wiring that detects motor
temperature is defective.
A fault occurred on the machine.
Example: The machine is locked.
7.5 Minor Faults/Alarms
Possible Solutions
1. Use the procedures in this manual to replace the cooling fan.
2. Set o4-03 = 0 [Fan.Oper Setting = 0 h] to reset the cooling
fan operation time.
Possible Solutions
Replace the control board or the drive. For information about
replacing the control board, contact the manufacturer or your
nearest sales representative.
Possible Solutions
Replace the control board or the drive. For information about
replacing the control board, contact the manufacturer or your
nearest sales representative.
Possible Solutions
Check the load, carrier frequency, and output frequency.
Possible Solutions
• Measure the ambient temperature.
• Increase the airflow around the drive.
• Install a cooling device (cooling fan or air conditioner) to
lower the ambient temperature.
• Remove objects near the drive that are producing too much
heat.
• Give the drive the correct installation space as shown in the
manual.
• Make sure that there is sufficient circulation around the control
panel.
• Examine the drive for dust or other unwanted materials that
could clog the cooling fan.
• Remove unwanted materials that prevent air circulation.
1. Use the procedures in this manual to replace the cooling fan.
2. Set o4-03 = 0 [Fan.Oper Setting = 0 h] to reset the cooling
fan operation time.
Possible Solutions
1. Find the external device that output the overheat alarm.
2. Remove the cause of the problem.
3. Clear the Overheat Alarm (oH2) [H1-xx = 7D] that was set to
MFDI terminals DI1 to DI8.
Possible Solutions
Correct wiring errors.
Examine the machine and remove the cause of the fault
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