Yaskawa iQpump1000 AC Drive Quick Start - Manual (Page 265)

HOA Keypad Display Minor Fault Name
Geo Params
Chk Q2-05 to Q2-08
Geothermal Mode Parameters
The drive is running at the level set in Q2-03 due to an incorrect setting.
Cause Possible Solutions
The temperature parameter values are set
incorrectly.
Set the temperature parameters in the following order:
Q2-08 > Q2-07 > Q2-06 > Q2-05
HOA Keypad Display Minor Fault Name
HCA
Current Alarm
Drive current exceeded overcurrent warning level (150% of the rated current).
Cause Possible Solutions
Load is too heavy. Reduce the load for applications with repetitive operations (i.e., stops and starts), or replace the drive.
Acceleration and deceleration times are too
short.
• Calculate the torque required during acceleration and for the inertia moment.
• If the torque level is not right for the load, take the following steps:
• Increase the acceleration and deceleration times (C1-01 through C1-04).
• Increase the capacity of the drive.
A special-purpose motor is being used, or
the drive is attempting to run a motor
greater than the maximum allowable
capacity.
• Check the motor capacity.
• Use a motor appropriate for the drive. Ensure the motor is within the allowable capacity range.
The current level increased due to Speed
Search after a momentary power loss or
while attempting to perform a fault restart.
The alarm will only appear briefly. There is no need to take action to prevent the alarm from occurring in
such instances.
HOA Keypad Display Minor Fault Name
HIFLO
High Flow
High Flow Error
The meter has detected a high flow condition.
Cause Possible Solution
The flow is too high Reduce the flow
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).
• 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.
HOA Keypad Display Minor Fault Name
High Feedback High FB Sensed
High Feedback Level Alarm
The feedback signal is too high.
Cause Possible Solutions
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).
• 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.
HOA Keypad Display Minor Fault Name
HISUC
High Suction
High Section Pressure
Cause Possible Solution
The suction pressure has fallen below 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 1 (alarm).
• 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.
5.3 Alarm Detection
YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide 265
5
Troubleshooting