YASKAWA iQpump1000 - Page 196

HOA Keypad Display Minor Fault Name
EoF Emergency Override Forward Run
Cause Possible Solution
The multi-function digital input for
EmergOverrideFWD (H1-oo = AF) has
been closed.
Open H1-oo = AF if the emergency condition is no longer present
HOA Keypad Display Minor Fault Name
Eor Emergency Override Reverse Run
Cause Possible Solution
The multi-function digital input for
EmergOverrideREV (H1-oo = B0) has
been closed.
Open H1-oo = B0 if the emergency condition is no longer present
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.
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.
5.3 Alarm Detection
196
YASKAWA TOEP YAIP1W 01A YASKAWA AC Drive - iQpump1000 Quick Start Guide