Alarm Detection; Alarm Detection; Alarm Codes, Causes, And Possible Solutions - YASKAWA iQpump1000 Quick Start Manual

5.3

Alarm Detection

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Alarm Codes, Causes, and Possible Solutions

Alarms are drive protection functions that do not necessarily cause the drive to stop. After removing the cause of an alarm,
the drive will return to the same status is was before the alarm occurred.
When an alarm has been triggered, the ALM light on the HOA keypad display blinks and the alarm code display flashes. If a
multi-function output is set for an alarm (H2-oo = 10), that output terminal will be triggered.
Note:
If a multi-function output is set to close when an alarm occurs (H2-oo = 10), it will also close when maintenance periods are reached,
triggering alarms LT-1 through LT-4 (triggered only if H2-oo = 2F).
HOA Keypad Display
AnalogFB Lost
Switched to Net
Cause
Defective or broken analog input source.
H3-0o is not set to B (PI Feedback)
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
Anti-Jam Active
Cause
The drive was not able to clear debris from
the impeller in fewer than the attempts set
in P7-02. This is only effective when P7-01,
Anti-jam Operation is set to 1 (enabled).
HOA Keypad Display
bb
Cause
External baseblock signal was entered via
one of the multi-function input terminals
(S1 to S8).
HOA Keypad Display
boL
Cause
The proper braking resistor has not been
installed.
YASKAWA TOEP YAIP1W 01A YASKAWA AC Drive - iQpump1000 Quick Start Guide
Table 5.3 Alarm Codes, Causes, and Possible Solutions
Analog Feedback Lost
Analog feedback has not been detected and the network PI feedback signal is now used.
Confirm that the PI feedback source is installed and working properly. If there is no feedback source, set
P9-02 to 3 so the drive will read the network PI feedback from another drive.
Set H3-0o to B if the analog input source is to be used for PI feedback.
Set P9-02 to 3 if the drive does not have an analog PI feedback 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 1 (Alarm).
Suction Pressure Analog Input Wire Break (SP Wire Break) is effective when Q5-19 is set to 1 (Alarm).
• 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.
Anti-Jam Alarm
• Check for proper pump operation.
• 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.
Baseblock
Drive output interrupted as indicated by an external baseblock signal.
Check external sequence and baseblock signal input timing.
Braking Transistor Overload Fault
The braking transistor in the drive has been overloaded.
Select the proper braking resistor.
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution

5.3 Alarm Detection

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