YASKAWA CIMR-DC4A0040AAA Technical Manual page 108

5.3 Fault Detection
Digital Operator
Display
oH
Heatsink Overheat
Cause
Surrounding temperature is too high.
Load is too heavy.
Internal cooling fan is stopped.
Digital Operator
Display
oH1
Cause
Surrounding temperature is too high.
Load is too heavy.
Internal cooling fan is stopped.
Digital Operator
Display
oL2 Converter Overload
Cause
Load is too heavy.
Converter capacity is too small.
The converter does not operate.
Digital Operator
Display
External Digital
Operator Connection
oPr
Cause
External operator is not properly connected to
the converter.
Digital Operator
Display
ov
Cause
A momentary power loss occurred.
The regenerative load is too large.
Input power voltage is too high.
Converter fails to operate properly due to noise
interference.
The wiring of the power supply voltage
detection circuits (
r1/ 11, 1/ 21, t1/ 31
the wiring of the main circuit terminals
(R/L1, S/L2, and T/L3) is not correct.
108
Fault Name
The heatsink temperature exceeded the overheat pre-alarm level set to L8-02. The default value
for L8-02 is determined by o2-04 (drive model selection).
• Check the temperature surrounding the converter. Verify temperature is within converter
specifications.
• Improve the air circulation within the enclosure panel.
• Install a fan or air conditioner to cool the surrounding area.
• Remove anything near the converter that might be producing excessive heat.
• Measure the output current.
• Decrease the load.
• Replace the cooling fan. Refer to page
• After replacing the cooling fan, set parameter o4-03 to 0 to reset the cooling fan maintenance.
Fault Name
The heatsink temperature exceeded the converter overheat level. Overheat level is determined by
Overheat 1
o2-04 (drive model selection).
• Check the temperature surrounding the converter.
• Improve the air circulation within the enclosure panel.
• Install a fan or air conditioner to cool the surrounding area.
• Remove anything near the converter that might be producing excessive heat.
• Measure the output current.
• Reduce the load.
• Replace the cooling fan. Refer to page
• After replacing the cooling fan, set parameter o4-03 to 0 to reset the cooling fan maintenance.
Fault Name
The thermal sensor of the converter triggered the converter overload protection.
Reduce the load.
Replace the converter with a larger model.
Start converter operation first, and then start converter operation.
Fault Name
The external operator has been disconnected from the converter.
Note: An oPr fault will occur when all of the following conditions are true:
• Output is interrupted when the operator is disconnected (o2-06 = 1).
Fault
• The Run command is assigned to the operator (b1-02 = 0 and LOCAL has been selected).
• Check the connection between the operator and the converter.
• Replace the cable if damaged.
• Turn off the input power and disconnect the operator. Reconnect the operator and reapply
converter input power.
Fault Name
Voltage in the DC bus has exceeded the overvoltage detection level.
• 200 V Class: Approximately 410 V
Overvoltage
• 400 V Class: Approximately 820 V
Investigate and correct the cause and reset the fault.
Refer to Diagnosing and Resetting Faults on page 121
Reduce the regenerative load.
• Check the voltage.
• Lower input power voltage within the limits listed in the specifications.
• Review the list of possible solutions provided for controlling noise.
• Review the section on handling noise interference and check the control circuit lines, main
circuit lines, and ground wiring.
) and
Correct the wiring.
YASKAWA ELECTRIC SIEP C710656 06F YASKAWA Power Regenerative Converter - D1000 Technical Manual
Details
Possible Solution
131 for details.
Details
Possible Solution
131 for details.
Details
Possible Solution
Details
Possible Solution
Details
Possible Solution
for details.