YASKAWA iQpump1000 Quick Start Manual page 196

5.3 Alarm Detection
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
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
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).
HOA Keypad Display
Freq. Ref Pump Min (P1-06)
Cause
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)
HOA Keypad Display
Freq. Ref Thrust (P4-12)
Cause
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)
HOA Keypad Display
Geo Params
Chk Q2-05 to Q2-08
196
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
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.
• 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.
Minimum Pump Frequency Reference
Drive frequency reference is set lower than P1-06, Minimum Pump Frequency.
Increase the frequency reference to a value greater than P1-06.
Thrust Frequency Reference
The fixed frequency reference is set to a value lower than the P4-12, Thrust Frequency, setting.
Increase the frequency reference to a value greater than P4-12.
Geothermal Mode Parameters
The drive is running at the level set in Q2-03 due to an incorrect setting.
YASKAWA TOEP YAIP1W 01A YASKAWA AC Drive - iQpump1000 Quick Start Guide
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