YASKAWA J1000 Technical Manual page 142

Cause
Fault reset was being executed when a run
command was entered.
LED Operator Display
Cause
Sequence error
LED Operator Display
EF1
EF2
EF3
EF4
EF5
Cause
An external device has tripped an alarm
function.
Wiring is incorrect.
Multi-function contact inputs are set
incorrectly.
LED Operator Display
Cause
Surrounding temperature is too high
Internal cooling fan has stopped.
Airflow around the drive is restricted.
LED Operator Display
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
• Ensure that a run command cannot be entered from the external terminals or option unit
during fault reset.
• Turn off the run command.
Forward/Reverse Run Command Input Error
EF
Both forward run and reverse run closed simultaneously for over 0.5 s.
Check the forward and reverse command sequence and correct the problem.
Note: When minor fault EF detected, motor ramps to stop.
External fault (input terminal S1)
External fault at multi-function input terminal S1.
External fault (input terminal S2)
External fault at multi-function input terminal S2.
External fault (input terminal S3)
External fault at multi-function input terminal S3.
External fault (input terminal S4)
External fault at multi-function input terminal S4.
External fault (input terminal S5)
External fault at multi-function input terminal S5.
Remove the cause of the external fault and reset the multi-function input value.
• Ensure the signal lines have been connected properly to the terminals assigned for external
fault detection (H1-oo = 20 to 2F).
• Reconnect the signal line.
• Check if the unused terminals have been set for H1-oo = 20 to 2F (External Fault).
• Change the terminal settings.
Heatsink Overheat
oH
The temperature of the heatsink exceeded the overheat pre-alarm level.
• 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 drive, 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.
Overtorque 1
oL3
Drive output current was greater than L6-02 for longer than the time set in L6-03.
http://nicontrols.com
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Refer to Cooling Fan Replacement on page
27.
Minor Fault Name
6.5 Alarm Detection
Minor Fault
Output
(H2-01 = 10)
YES
Minor Fault
Output
(H2-01 = 10)
YES
Minor Fault
Output
(H2-01 = 10)
YES
YES
YES
Minor Fault
Output
(H2-01 = 10)
YES
161.
YES
Refer to
YES
YES
141
6