YASKAWA A1000 Series Quick Start Manual page 183

Digital Operator Display
Cause
An external device tripped an alarm function Remove the cause of the external fault and reset the fault.
Wiring is incorrect
Multi-function contact input setting is
incorrect
Digital Operator Display
Cause
Noise has corrupted data while writing to the
EEPROM
Hardware problem
Digital Operator Display
Cause
Internal cooling fan has malfunctioned
Fault detected in the internal cooling fan or
magnetic contactor to the power supply.
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
External Fault (input terminal S2)
EF2
External fault at multi-function input terminal S2.
External Fault (input terminal S3)
EF3
External fault at multi-function input terminal S3.
External Fault (input terminal S4)
EF4
External fault at multi-function input terminal S4.
External Fault (input terminal S5)
EF5
External fault at multi-function input terminal S5.
External Fault (input terminal S6)
EF6
External fault at multi-function input terminal S6.
External Fault (input terminal S7)
EF7
External fault at multi-function input terminal S7.
External Fault (input terminal S8)
EF8
External fault at multi-function input terminal S8.
• Properly connect the signal lines to the terminals assigned for external fault detection
(H1-oo = 20 to 2B).
• Reconnect the signal line.
• Check for unused terminals set for H1-oo = 20 to 2B (External Fault).
• Change the terminal settings.
EEPROM Write Error
Err
Data cannot be written to the EEPROM
• Press "ENTER" on the digital operator.
• Correct the parameter setting.
• Cycle power to the drive.
• If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa
representative for instructions on replacing the control board.
If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa
representative for instructions on replacing the control board.
Internal Fan Fault
FAn
Fan or magnetic contactor failure (detected when L8-32 = 0 to 2)
• Cycle power to the drive.
• 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, replace
the fan.
• Cycle power to the drive.
• If the fault continues to occur, replace the power board/gate drive board or the entire drive.
• Contact Yaskawa or a Yaskawa representative for instructions on replacing the power board/gate drive
board.
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
5.2 Fault Detection
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