Yaskawa iQpump1000 AC Drive Quick Start - Manual (Page 271)

HOA Keypad Display Minor Fault Name
PoC Pump Over Cycle
Cause Possible Solution
The pump has exceeded the number of
cycles set in P2-10 in the time set in P2-11
and P2-12 is set to 1 (alarm).
• Set the Pump Over Cycle alarm characteristics in P2-10 and P2-11.
• Drive response to this condition is controlled by P2-12, Over Cycling Mode.
HOA Keypad Display Minor Fault Name
R-DNE-So Remote Drive Disable
Cause Possible Solution
Terminal So (H1-0o = 95) has been
closed for the time set in P4-26, Remote
Drive Disable On-Delay, when P4-25,
Remote Drive Disable Selection, was set to
0 (N.O.).
Remove conditions causing the terminal to close.
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.).
Remove conditions causing the terminal to open.
HOA Keypad Display Minor Fault Name
rUn
Motor Switch during Run
A command to switch motors was entered during run.
Cause Possible Solution
A motor switch command was entered
during run.
Change the operation pattern so that the motor switch command is entered while the drive is stopped.
HOA Keypad Display Minor Fault Name
SE
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).
Cause Possible Solution
A digital input set to 67H (MEMOBUS/
Modbus test) was closed while the drive
was running.
Stop the drive and run the test again.
HOA Keypad Display Minor Fault Name
SPL
Suction Pressure Loss
Suction Pressure Loss
Wire-break detection for suction pressure.
Cause Possible Solution
An analog input programmed for setting 23
“WaterLvl/Suction” has dropped below 3
mA or risen above 21 mA for longer than 1
second.
Repair pressure sensor or wiring.
Digital Operator Display Minor Fault Name
THo
<1>
Thermistor Disconnect
The thermistor used to detect motor temperature has become disconnected.
Cause Possible Solutions
The motor thermistor is not connected
properly.
Check the thermistor wiring.
<1> Detected in models 4A0930 and 4A1200.
HOA Keypad Display Minor Fault Name
TrPC
IGBT Maintenance Time (90%)
IGBTs have reached 90% of their expected performance life.
Cause Possible Solution
IGBTs have reached 90% of their expected
performance life.
Replace the drive.
5.3 Alarm Detection
YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide 271
5
Troubleshooting