YASKAWA Z1000 User Manual page 210

5.4 Fault Detection
HOA Keypad Display
Wiring is incorrect
Multi-function contact input setting is incorrect
HOA Keypad Display
Err
Cause
Noise has corrupted data while writing to the
EEPROM
Hardware problem
HOA Keypad Display
FAn
Cause
Internal cooling fan has malfunctioned
Fault detected in the internal cooling fan or
magnetic contactor to the power supply
HOA Keypad Display
Fn1
Cause
External cooling fan has malfunctioned
HOA Keypad Display
FbH
Cause
Parameters are set inappropriately
Incorrect PI feedback wiring
There is a problem with the feedback sensor
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• Properly connect the signal lines to the terminals assigned for external fault detection
(H1-oo = 20 to 2F).
• Reconnect the signal line.
• Check for unused terminals set for H1-oo = 20 to 2F (External Fault).
• Change the terminal settings.
EEPROM Write Error
Data cannot be written to the EEPROM
• Press "ENTER" on the HOA keypad.
• 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 or magnetic contactor failure
• 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, follow
the replacement instructions in the
• 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.
External Fan Fault
External fan failure
• 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, follow
the replacement instructions in the
Excessive PI Feedback
PI feedback input is greater than the level set to b5-36 for longer than the time set to b5-37. Set b5-12
to 2 or 5 to enable fault detection.
Check b5-36 and b5-37 settings.
Correct the wiring.
• Check the sensor on the control side.
• Replace the sensor if damaged.
YASKAWA ELECTRIC TOEP C710616 45F YASKAWA AC Drive – Z1000 User Manual
Fault Name
Fault Name
Possible Solution
Fault Name
Possible Solution
Peripheral Devices & Options
Fault Name
Possible Solution
Peripheral Devices & Options
Fault Name
Possible Solution
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