YASKAWA CIMR-JA Series Installation & Start-Up Manual page 136

5.5 Alarm Detection
EF5
Cause
An external device has tripped
an alarm function.
Wiring is incorrect.
Multi-function contact inputs
are set incorrectly.
LED Operator Display
oH
Cause
Surrounding temperature is too
high
Internal cooling fan has
stopped.
Airflow around the drive is
restricted.
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
ov
136 YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
External fault (input terminal S5)
External fault at multi-function input terminal S5.
Possible Solutions
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
The temperature exceeded 90-100 °C
Possible Solutions
• 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.
on page 161.
• 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. Refer to Correct Installation Orientation on
page 34.
• 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
Drive output current was greater than L6-02 for longer than the time set in L6-03.
Possible Solutions
Check parameters L6-02 and L6-03.
• Check the status of the machine.
• Remove the cause of the fault.
DC Bus Overvoltage
The DC bus voltage exceeded the trip point.
For 200 V class: approximately 410 V
For 400 V class: approximately 820 V (740 V when E1-01 < 400)
Minor Fault Name
Refer to Cooling Fan Replacement
Minor Fault Name
Minor Fault Name
Minor Fault
Output
(H2-01 = 10)
YES
YES
YES
Minor Fault
Output
(H2-01 = 10)
YES
YES
YES
YES
Minor Fault
Output
(H2-01 = 10)
YES
YES