Yaskawa iQpump1000 AC Drive Quick Start User Manual
Page 264
HOA Keypad Display
Minor Fault Name
FAn
Internal Fan Error
Fan or magnetic contactor failure
Cause
Possible Solution
Internal cooling fan has malfunctioned
• 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
Fault detected in the internal cooling fan or
magnetic contactor to the power supply.
• 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.
HOA Keypad Display
Minor Fault Name
Feedback Loss Go To Freq. b5-13
PI Feedback Loss
The drive will run at the speed set in b5-13, Feedback Loss Goto Frequency.
Cause
Possible Solutions
PI feedback source is incorrectly installed
or is not working. Effective only when
b5-12 is set to 3 (Run at b5-13).
• Confirm that the PID feedback source is installed and working properly.
• Drive response to this condition is controlled by b5-12, Feedback Loss 4 to 20 mA Detection Selection,
and b5-13, Feedback Loss Go To Frequency.
HOA Keypad Display
Minor Fault Name
Feedback Loss Wire Break
PI Feedback Loss
The analog input programmed for PID feedback has gone above 21 mA or fallen below 3 mA.
Cause
Possible Solutions
PI feedback source is incorrectly installed
or is not working. This is effective only
when b5-12 Feedback Loss 4 to 20 mA
Detection Selection is set to 1 (alarm).
• Confirm that the PID feedback source is installed and working properly.
• Drive response to this condition is controlled by b5-12, Feedback Loss 4 to 20 mA Detection Selection,
and b5-13, Feedback Loss Go To Frequency.
• Auto-restart of this fault is controlled by L5-42, Feedback Loss Fault Retry Selection.
HOA Keypad Display
Minor Fault Name
Freq. Ref Pump Min (P1-06)
Minimum Pump Frequency Reference
Drive frequency reference is set lower than P1-06, Minimum Pump Frequency.
Cause
Possible Solutions
The frequency reference is set lower than
P1-06. The frequency reference is
internally set to the P1-06 value during this
time.
This will only be active when the following
conditions are true:
• Drive is NOT in PI Mode
• Minimum Pump Frequency is enabled
(P1-06 > 0.00)
Increase the frequency reference to a value greater than P1-06.
HOA Keypad Display
Minor Fault Name
Freq. Ref Thrust (P4-12)
Thrust Frequency Reference
The fixed frequency reference is set to a value lower than the P4-12, Thrust Frequency, setting.
Cause
Possible Solutions
The frequency reference is set lower than
P4-12. The frequency reference is
internally set to the P4-12 value during this
time.
This will only be active when the following
conditions are true:
• Drive is NOT in PI Mode
• Thrust bearing is enabled (P4-12 > 0.00)
Increase the frequency reference to a value greater than P4-12.
5.3 Alarm Detection
264
YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide