YASKAWA iQpump1000 User Manual page 282

5.3 Alarm Detection
HOA Keypad Display
Terminal So (H1-0o = 95) has been open
for the time set in P4-26, Remote Drive
Disable On-Delay, when P4-25, Remote
Drive Disable Selection, was set to 1
(N.C.).
HOA Keypad Display
rUn
Cause
A motor switch command was entered
during run.
HOA Keypad Display
SE
Cause
A digital input set to 67H (MEMOBUS/
Modbus test) was closed while the drive
was running.
HOA Keypad Display
SPL
Suction Pressure Loss
Cause
An analog input programmed for setting 23
"WaterLvl/Suction" has dropped below 3
mA or risen above 21 mA for longer than 1
second.
Digital Operator Display
THo
<1>
Cause
The motor thermistor is not connected
properly.
<1> Detected in models 4A0930 and 4A1200.
HOA Keypad Display
TrPC
Cause
IGBTs have reached 90% of their expected
performance life.
HOA Keypad Display
UL3
Cause
Parameter settings are not appropriate for
the load
There is a fault on the machine side
HOA Keypad Display
UL4
282
Remove conditions causing the terminal to open.
Motor Switch during Run
A command to switch motors was entered during run.
Change the operation pattern so that the motor switch command is entered while the drive is stopped.
MEMOBUS/Modbus Communication Test Mode Error
Note: This alarm will not trigger a multi-function output terminal that is set for alarm output
(H2-oo = 10).
Stop the drive and run the test again.
Suction Pressure Loss
Wire-break detection for suction pressure.
Repair pressure sensor or wiring.
Thermistor Disconnect
The thermistor used to detect motor temperature has become disconnected.
Check the thermistor wiring.
IGBT Maintenance Time (90%)
IGBTs have reached 90% of their expected performance life.
Replace the drive.
Undertorque Detection 1
The current has fallen below the minimum value set for torque detection (L6-02) for longer than the allowable
time (L6-03).
Check the settings of parameters L6-02 and L6-03.
Check the load for any problems.
Undertorque Detection 2
The current has fallen below the minimum value set for torque detection (L6-05) for longer than the allowable
time (L6-06).
Minor Fault Name
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Possible Solution
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Possible Solutions
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Possible Solution
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Possible Solution
Minor Fault Name
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual