YASKAWA CIMR-VU BA0001 Technical Manual page 287

Digital Operator Display
Surrounding temperature is too high
Internal cooling fan has stopped.
Airflow around the drive is restricted.
Digital Operator Display
Cause
An external device triggered and overheat
warning in the drive.
Digital Operator Display
Cause
Motor thermostat wiring is fault (PTC input). Repair the PTC input wiring.
There is a fault on the machine side (e.g., the
machine is locked up).
Motor has overheated.
Digital Operator Display
Cause
Inappropriate parameter settings.
There is a fault on the machine side (e.g., the
machine is locked up).
Digital Operator Display
Cause
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
• 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.
• After replacing the fan, reset the cooling fan maintenance parameter to (o4-03 = "0").
• Provide proper installation space around the drive as indicated in the manual.
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
oH2
"Drive Overheat Warning" was input to a multi-function input terminal, S1 through S7 (H1-oo= B)
• Search for the device that tripped the overheat warning.
• Solving the problem will clear the warning.
Motor Overheat
oH3
The motor overheat signal entered to a multi-function analog input terminal exceeded the alarm level
(H3-02 or H3-10 = E).
• 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
oL3
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
oL4
Drive output current (or torque in OLV) was greater than L6-05 for longer than the time set in L6-06.
Minor Fault Name
Refer to Cooling Fan Replacement on page
38.
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
6.5 Alarm Detection
317.
YES
Refer to
Minor Fault
(H2-oo = 10)
YES
Minor Fault
(H2-oo = 10)
YES
Minor Fault
(H2-oo = 10)
YES
Minor Fault
(H2-oo = 10)
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