YASKAWA iQpump1000 User Manual page 256

5.2 Fault Detection
HOA Keypad Display
A damaged motor cable is creating a short
circuit
Excessive leakage current at the drive
output
The drive started to run during a current
offset fault or while coasting to a stop
Hardware problem
HOA Keypad Display
HFB
Cause
The feedback signal has risen above the
level set in P1-11, High Feedback Level,
for the time set in P1-12, High Feedback
Level Fault Delay Time.
This is effective only when P1-13, High
Feedback Selection, is set to 0 (Fault and
digital outt).
HOA Keypad Display
HIAUX
High PI Aux Lvl
Cause
PI Aux Feedback has risen above the Q6-12
level for longer than the time set in Q6-13
and the drive is running inAUTO, and
output frequency is greater than zero.
HOA Keypad Display
HIFLO
High Flow
Cause
The flow is too high
The measured water flow has risen above
the P6-17 level for the time set in P6-18.
This is only effective when P6-19, High
Flow Select is set to 2 (fault).
HOA Keypad Display
HISUC
High Suction
Cause
The suction pressure has risen above the
level set in Q5-12 for longer than the time
set in Q5-13. This is only effective when
Q5-14, High Suction Pressure Behavior
Select, is set to 2 (fault).
HOA Keypad Display
HWL
Cause
The Low Water Level switch is activated or
P1-31, High Water Digital Input
Configuration, is programmed incorrectly.
256
• Check the motor cable.
• Remove the short circuit and reapply power to the drive
• Check the resistance between the cable and the ground terminal
• Replace the cable.
• Reduce the carrier frequency.
• Reduce the amount of stray capacitance.
• Set b3-01 to 1 to enable Speed Search at Start.
• Perform Speed Search 1 or 2 (H1-oo = 61 or 62) via one of the external terminals.
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.
High Feedback
The feedback signal is too high.
• Set the High Feedback fault characteristics in P1-11 and P1-12.
• Drive response to this condition is controlled by P1-13, High Feedback Selection. Auto-restart of this fault
is controlled by L5-41, High Feedback Fault Retry Selection.
High PI Auxiliary Feedback Level
• Lower the PI Aux Feedback level
• Adjust parameters Q6-12 and Q6-13.
High Flow
The meter has detected a high flow condition.
Reduce the flow
• Set the High Flow fault characteristics in P6-17 and P6-18.
• Drive response to this condition is controlled by P6-19, High Flow Select.
• Auto-restart of this fault is controlled by P6-19, High Flow Select.
High Section Pressure
• Reduce the system pressure.
• Set the High Suction Pressure fault characteristics in Q5-12, Q5-13, and Q5-18.
• Drive response to this condition is controlled by Q5-14, High Suction Pressure Behavior Select.
• Auto-restart of this fault is controlled by Q5-14, High Suction Pressure Behavior Select and Q5-15, Suction
Pressure Auto-restart Time.
High Water Level
The "High Water Level" digital input is active (H1-0o = 90).
Lower the water level and/or adjust the High Water Level switch.
Fault Name
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual
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