YASKAWA iQpump1000 User Manual page 276

5.3 Alarm Detection
HOA Keypad Display
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 1 (alarm).
HOA Keypad Display
High Feedback High FB Sensed
Cause
The feedback level has risen above the level
set in P1-11, High Feedback Level
This is only effective when P1-13, High
Feedback Selection, is set to 1 (Alarm and
digital out).
HOA Keypad Display
HISUC
High Suction
Cause
The suction pressure has risen above the
level set in Q5-12. This is only effective
when Q5-14, High Suction Pressure
Behavior Select is set to 1 (alarm).
HOA Keypad Display
LOAUX
Low PI Aux Lvl
Cause
PI Aux Feedback has fallen below the
Q6-09 level for longer than the time set in
Q6-10 and the drive is running in HAND or
AUTO.
HOA Keypad Display
LOP
Cause
The measured quantity of water has
dropped below the level set in P1-19, Prime
Loss Level, for the time set in P1-20, Loss
of Prime Time, and the output frequency
has risen above P1-21, Prime Loss
Frequency. This could be due to a dry well,
air in the system, or no water in the system.
This is effective only when P1-22 Loss of
Prime Selection is set to 1 (alarm).
HOA Keypad Display
LOSUC
Low Suction
Cause
276
• Lower the PI Aux Feedback level
• Adjust parameters Q6-12 and Q6-13.
High Flow Error
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 Feedback Level Alarm
The feedback signal is too high.
• Decrease the feedback signal.
• Set the High Feedback alarm characteristics in P1-11 and P-12.
• Drive response to this condition is controlled by P1-13, High Feedback Selection.
High Section Pressure
• Reduce the system pressure.
• Set the High Suction Pressure alarm characteristics in Q5-12.
• 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.
Low PI Auxiliary Feedback Level
• Raise the PI Aux Feedback level
• Adjust parameters Q6-09 and Q6-10.
Loss of Prime
The pump has lost its prime and P1-22 is set to 1.
• If there is resistance in the pump, allow the system to pump water again.
• Set the Loss of Prime alarm characteristics in P1-18, P1-19, P1-20, and P1-21.
• Drive response to this condition is controlled by P1-21, Loss of Prime Selection.
Low Section Pressure
Fault Name
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solution
Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual