YASKAWA V1000 Series

5.6 Alarm Detection
232 YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
Cause Possible Solutions
Minor Fault
Output
(H2- = 10)
Motor has overheated.
• Check the size of the load, accel/decel times and cycle
times.
• Decrease the load.
• Increase the acceleration and deceleration times
(C1-01 through C1-08).
YES
Motor has overheated.
Adjust the preset V/f pattern (E1-04 through E1-10). This
will mainly involve reducing E1-08 and E1-10.
Note: Be careful not to lower E1-08 and E1-10
excessively, because this reduces load tolerance at low
speeds.
YES
Motor has overheated.
• Check the motor-rated current.
• Enter the motor-rated current as indicated on the motor
nameplate (E2-01).
• Ensure the motor cooling system is operating normally.
• Repair or replace the motor cooling system.
YES
Motor thermostat wiring is fault
(PTC input).
Repair the PTC input wiring. YES
There is a fault on the machine side
(e.g., the machine is locked up).
• Check the status of the machine.
• Remove the cause of the fault.
YES
LED Operator Display Minor Fault Name
oL3
Overtorque 1
Drive output current (or torque in OLV) was greater than L6-02 for longer
than the time set in L6-03.
Cause Possible Solutions
Minor Fault
Output
(H2- = 10)
Parameter settings are not
appropriate.
Check parameters L6-02 and L6-03. YES
There is a fault on the machine side
(e.g., the machine is locked up).
• Check the condition of the machine.
• Remove the cause of the fault.
YES
LED Operator Display Minor Fault Name
oL4
Overtorque 2
Drive output current (or torque in OLV) was greater than L6-05 for longer
than the time set in L6-06.
Cause Possible Solutions
Minor Fault
Output
(H2- = 10)
Parameter settings are not
appropriate.
Check parameters L6-05 and L6-06. YES
There is a fault on the machine side
(e.g., the machine is locked up).
• Check the status of the machine being used.
• Remove the cause of the fault.
YES