Fault Detection; Fault Detection; Fault Displays, Causes, And Possible Solutions - YASKAWA iQpump1000 Quick Start Manual

5.2

Fault Detection

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Fault Displays, Causes, and Possible Solutions

Faults are detected for drive protection, and cause the drive to stop while triggering the fault output terminal MA-MB-MC.
Remove the cause of the fault and manually clear the fault before attempting to run the drive again.
HOA Keypad Display
ACCUM
Accum Level
Cause
The accumulated level has exceeded the
values set in P6-11 to P6-14. This is only
effective when P1-15, Accumulated
Behavior is set to 2 (fault with manual
monitor reset) or 3 (fault with automatic
monitor reset.
HOA Keypad Display
AJF
Anti-Jam Fault
Cause
The drive was not able to clear debris from
the impeller in fewer than the number of
attempts set in P7-02. This is only effective
when P7-01, Anti-jam Operation is set to 1
(enabled).
HOA Keypad Display
Ana GeoTemp Lost
Switched to Net
Cause
• Defective or broken analog input source.
• H3-0o≠ 21 (Geothermal Temperature).
HOA Keypad Display
AnalogWL/SP Lost
Switched to Net
Cause
• Defective or broken analog input source.
• Wire-break detected with the Water
Level / Suction Pressure analog signal
(H3-oo = 23).
HOA Keypad Display
bAT
Cause
The digital operator battery is low
HOA Keypad Display
boL
Cause
YASKAWA TOEP YAIP1W 01A YASKAWA AC Drive - iQpump1000 Quick Start Guide
Table 5.2 Detailed Fault Displays, Causes, and Possible Solutions
Accumulated Level Fault
The total volume of water flow measured over time by the flow meter has exceeded the fault level setting.
Set the Accumulated Level fault characteristics in P6-11 to P6-14 and P6-16.
Drive response to this condition is controlled by P6-15, Accumulated Behavior.
Auto-restart of this fault is controlled by P6-15, Accumulated Behavior and P6-05, Flow Accumulation Reset.
Anti-Jam Fault
• Check for proper pump operation. Remove debris from the pump impeller.
• Set the Anti-jam fault characteristics in P7-02 to P7-08.
• Drive response to this condition is controlled by P7-01, Anti-jam Operation Selection.
Analog Geothermal Temperature Lost
Analog Geothermal Temperature has not been detected, and the Network Geothermal signal is now being
used.
• Ensure that the Geothermal Temperature source is installed and working properly. If there is none present,
set P9-60 to 3 so it will always read the Geothermal Temperature of another drive on the network .
• Set H3-0o = 21 (Geothermal Temperature) if the analog input source is to be used for Geothermal.
Otherwise, set P9-02 to 3 if the drive does not have an analog Geothermal Temperature source.
Analog Water Level / Suction Pressure Lost
Network Water Level / Suction Pressure is now being used because a wire-break was detected with the analog
signal.
Water Level Analog Input Wire Break (WL Wire Break) is effective when Q4-16 is set to 2 (Fault).
Suction Pressure Analog Input Wire Break (SP Wire Break) is effective when Q5-19 is set to 2 (Fault).
• Confirm that the Water Level or Suction Pressure source is installed and working properly.
• Confirm that the Q4-16 and Q5-19 settings are correct.
• Set P9-50 to 3 if the drive does not have an analog input source.
Digital Operator Battery Voltage Low
Replace the digital operator battery.
Braking Transistor Overload Fault
The braking transistor reached its overload level.
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5.2 Fault Detection

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