YASKAWA CIMR-DC4A0040AAA Technical Manual page 115

Digital Operator
Minor Fault Name
Display
HCA
Current Alarm
Cause
Load is too heavy.
Digital Operator
Minor Fault Name
Display
Cooling Fan
LT-1
Maintenance Time
Cause
The cooling fan has reached 90% of its
expected performance life.
Digital Operator
Minor Fault Name
Display
Capacitor Maintenance
LT-2
Cause
The main circuit and control circuit capacitors
have reached 90% of their expected
performance lives.
Digital Operator
Minor Fault Name
Display
Soft Charge Bypass
LT-3 Relay Maintenance
Cause
The DC bus soft charge relay has reached 90%
of expected performance life.
Digital Operator
Minor Fault Name
Display
oH
Heatsink Overheat
Cause
Surrounding temperature is too high
Airflow around the converter is restricted.
The ambient temperature is too high.
The load is too large.
Internal cooling fan has stopped.
YASKAWA ELECTRIC SIEP C710656 06F YASKAWA Power Regenerative Converter - D1000 Technical Manual
Converter current exceeded overcurrent warning level (150% of the rated
current).
Reduce the load for applications with repetitive operations (i.e., stops and starts), or replace the
converter.
The cooling fan has reached its expected maintenance period and may need to be
replaced.
Note: An alarm output (H2- = 10) will only be triggered if both (H2- =
2F and H2- = 10) are set.
Replace the cooling fan and set o4-03 to 0 to reset the Maintenance Monitor.
The main circuit and control circuit capacitors are nearing the end of their
expected performance life.
Time
Note: An alarm output (H2- = 10) will only be triggered if H2- = 2F.
Replace either the control board or the entire converter. For instructions on replacing the control
board, contact Yaskawa or your nearest sales representative.
The DC bus soft charge relay is nearing the end of its expected performance life.
Note: An alarm output (H2- = 10) will only be triggered if H2- = 2F.
Time
Replace either the control board or the entire converter. For instructions on replacing the control
board, contact Yaskawa or your nearest sales representative.
The temperature of the heatsink exceeded the overheat pre-alarm level set to
L8-02 (90-100°C). Default value for L8-02 is determined by o2-04 (drive model
selection).
• 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 converter that may cause extra heat.
• Provide proper installation space around the converter as indicated in the manual. Refer to
Installation Orientation and Spacing on page 29
• Allow for the proper space and ensure that there is sufficient circulation around the control
panel.
• Check for dust or other foreign materials clogging the cooling fan.
• Clear debris caught in the fan that restricts air circulation.
Check the ambient temperature.
• Improve ventilation in the control panel.
• Install a cooling device (e.g., a cooling fan or air conditioner) and lower the ambient
temperature.
• If there are heat-generating objects nearby, remove them.
Measure the output current.
Lower the load.
• Replace the cooling fan. Refer to page
• After replacing the converter, set parameter o4-03 to 0 to reset the cooling fan operation time.
5.4 Alarm Detection
Detail
Possible Solutions
Detail
Possible Solutions
Detail
Possible Solutions
Detail
Possible Solutions
Detail
Possible Solutions
for details.
131 for details.
Alarm
Output
(H2-=10)
YES
Alarm
Output
(H2-=10)
YES
Alarm
Output
(H2-=10)
YES
Alarm
Output
(H2-=10)
YES
Alarm
Output
(H2-=10)
YES
5
115