YASKAWA CIMR-DC4A0040AAA Technical Manual page 104

5.3 Fault Detection
EF6
(input terminal S6)
EF7
(input terminal S7)
EF8
(input terminal S8)
Cause
An external device tripped an alarm function.
Wiring is incorrect.
Multi-function contact input setting is incorrect.
Digital Operator
Display
Err EEPROM Write Error Data cannot be written to the EEPROM
Cause
Electrical noise has corrupted data while
writing to the EEPROM.
Hardware problem
Digital Operator
Display
Internal Fan Fault
Fan
Cause
Internal cooling fan has malfunctioned.
Fault detected in the internal cooling fan or
magnetic contactor to the power supply.
Digital Operator
Display
Fdv
Frequency Fault
Cause
A momentary power loss occurred.
An input power supply wiring terminal is loose.
The fluctuation in the voltage of the input
power supply is too large.
The AC power supply fuse is open.
Digital Operator
Display
FUA AC Fuse Blowout
Cause
The power supply fuse is open.
104
External Fault
External fault at multi-function input terminal S6.
External Fault
External fault at multi-function input terminal S7.
External Fault
External fault at multi-function input terminal S8.
Remove the cause of the external fault and reset the fault.
• Properly connect the signal lines to the terminals assigned for external fault detection
(H1- = 20 to 2B).
• Reconnect the signal line.
• Check for unused terminals set for H1- = 20 to 2B (External Fault).
• Change the terminal settings.
Fault Name
• Press "ENTER" on the digital operator.
• Correct the parameter setting.
• Cycle power to the converter.
If the problem continues, replace the control board or the entire converter. Contact Yaskawa or a
Yaskawa representative for instructions on replacing the control board.
Fault Name
Fan or magnetic contactor failure
• Cycle power to the converter.
• Check for fan operation.
• Verify the cumulative operation time of the fan with monitor U4-03, and verify the cumulative
operation time of the fan maintenance timer with U4-04.
• If the cooling fan has exceeded its expected performance life or is damaged in any other way,
follow the replacement instructions in
Fault Name
Power Supply
The input power supply frequency exceeded the allowable frequency fluctuation.
Investigate and correct the cause and reset the fault.
Refer to Diagnosing and Resetting Faults on page
• A transistor inside the converter was destroyed.
• The input wiring or drive output has ground faulted or short circuited.
Contact your Yaskawa representative or the nearest Yaskawa sales office.
Fault Name
The power supply fuse is open.
• A transistor inside the converter was destroyed.
• The input wiring or drive output has ground faulted or short circuited.
Contact your Yaskawa representative or the nearest Yaskawa sales office.
YASKAWA ELECTRIC SIEP C710656 06F YASKAWA Power Regenerative Converter - D1000 Technical Manual
Possible Solution
Details
Possible Solution
Details
Possible Solution
Cooling Fans on page 130.
Details
Possible Solution
121.
Details
Possible Solution