Omron V1000 User Manual page 245

6.5 Alarm Detection
LED Operator Display
oH
Cause
Surrounding temperature is too high
Internal cooling fan has stopped.
Airflow around the drive is restricted.
LED Operator Display
oH2
Cause
An external device triggered and overheat
warning in the drive.
LED Operator Display
oH3
Cause
Motor thermostat wiring is fault (PTC
input).
There is a fault on the machine side (e.g.,
the machine is locked up).
Motor has overheated.
LED Operator Display
oL3
Cause
Inappropriate parameter settings.
There is a fault on the machine side (e.g.,
the machine is locked up).
LED Operator Display
oL4
Cause
Parameter settings are not appropriate.
There is a fault on the machine side (e.g.,
the machine is locked up).
LED Operator Display
oL5
Cause
Overtorque occurred, triggering the
mechanical weakening level set to L6-08.
244
Heatsink Overheat
The temperature exceeded the maximum allowable value.
• Check the surrounding temperature.
• Improve the air circulation within the enclosure panel.
• Install a fan or air conditioner to cool surrounding area.
• Remove anything near drive that may cause extra heat.
• Replace the cooling fan. Refer to Cooling Fan Replacement on page
• After replacing the drive, reset the cooling fan maintenance parameter to (o4-03 = "0").
• Provide proper installation space around the drive as indicated in the manual.
to Correct Installation Orientation on page
• Allow for the specified space and ensure that there is sufficient circulation around the
control panel.
• Check for dust or foreign materials clogging cooling fan.
• Clear debris caught in the fan that restricts air circulation.
Drive Overheat Warning
"Drive Overheat Warning" was input to a multi-function input terminal, S1 through S6 (H1-= B)
• Search for the device that tripped the overheat warning.
• Solving the problem will clear the warning.
Motor Overheat
The motor overheat signal entered to a multi-function analog input terminal exceeded the alarm level
(H3-02 or H3-10 = E).
Repair the PTC input wiring.
• Check the status of the machine.
• Remove the cause of the fault.
• Check the load size, accel/decel times, and cycle times.
• Decrease the load.
• Increase accel and decel times (C1-01 to C1-08).
• Adjust the preset V/f pattern (E1-04 through E1-10). This will mainly involve reducing
E1-08 and E1-10. Note: Do not lower E1-08 and E1-10 excessively, because this
reduces load tolerance at low speeds.
• Check the motor-rated current.
• Enter motor-rated current on motor nameplate (E2-01).
• Ensure the motor cooling system is operating normally.
• Repair or replace the motor cooling system.
Overtorque 1
Drive output current (or torque in OLV) was greater than L6-02 for longer than the time set in L6-03.
Check parameters L6-02 and L6-03.
• Check the status of the machine.
• Remove the cause of the fault.
Overtorque 2
Drive output current (or torque in OLV) was greater than L6-05 for longer than the time set in L6-06.
Check parameters L6-05 and L6-06.
• Check the status of the machine being used.
• Remove the cause of the fault.
Mechanical Weakening Detection 1
Overtorque occurred, matching the conditions specified in L6-08.
Check for the cause of mechanical weakening.
Minor Fault Name
Possible Solutions
31.
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
Minor Fault
Output
(H2- = 10)
YES
267.
YES
Refer
YES
YES
Minor Fault
Output
(H2- = 10)
YES
Minor Fault
Output
(H2- = 10)
YES
YES
YES
Minor Fault
Output
(H2- = 10)
YES
YES
Minor Fault
Output
(H2- = 10)
YES
YES
Minor Fault
Output
(H2- = 10)
YES