YASKAWA iQpump1000 User Manual page 274

5.3 Alarm Detection
HOA Keypad Display
Cause
An external device has tripped an alarm
function.
Wiring is incorrect.
Multi-function contact inputs are set
incorrectly.
HOA Keypad Display
EoF
Cause
The multi-function digital input for
EmergOverrideFWD (H1-oo = AF) has
been closed.
HOA Keypad Display
Eor
Cause
The multi-function digital input for
EmergOverrideREV (H1-oo = B0) has
been closed.
HOA Keypad Display
E5
Cause
Data has not been received from the PLC
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
Feedback Loss Go To Freq. b5-13
Cause
PI feedback source is incorrectly installed
or is not working. Effective only when
b5-12 is set to 3 (Run at b5-13).
HOA Keypad Display
Feedback Loss Wire Break
Cause
274
Remove the cause of the external fault and reset the multi-function input value.
• Ensure the signal lines have been connected properly to the terminals assigned for external fault detection
(H1-oo = 2C to 2F).
• Reconnect the signal line.
• Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault).
• Change the terminal settings.
Emergency Override Forward Run
Open H1-oo = AF if the emergency condition is no longer present
Emergency Override Reverse Run
Open H1-oo = B0 if the emergency condition is no longer present
SI-T3 Watchdog Timer Error
The watchdog timed out.
Execute DISCONNECT or ALM_CLR, then issue a CONNECT command or SYNC_SET command and
proceed to phase 3. Refer to the SI-T3 Option Technical Manual for more details on troubleshooting.
Internal Fan Error
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.
PI Feedback Loss
The drive will run at the speed set in b5-13, Feedback Loss Goto Frequency.
• 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.
PI Feedback Loss
The analog input programmed for PID feedback has gone above 21 mA or fallen below 3 mA.
Minor Fault Name
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Possible Solution
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Possible Solution
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Possible Solution
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Peripheral Devices & Options
Minor Fault Name
Possible Solutions
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Possible Solutions
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual
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