112
YASKAWA
TOEPC7106171FD FP605 DRIVE INSTALLATION & PRIMARY OPERATION
Code
Name
Causes
Possible Solutions
HIAUX
High PI Aux Feedback Level
PI Auxiliary Feedback is more than the level set in
YF-12 [PI Aux Control High Level Detect]
for the
time set in
YF-13 [PI Aux High Level Detection Time]
in these conditions:
•
The drive is running.
•
The output frequency > 0.
•
Decrease the PI Auxiliary Feedback level less than
YF-12
.
•
Set
YF-12
and
YF-13
correctly.
HLCE
High Level Communication Errors
Communication data error occurred between the
option and the master drive when you use Gateway
function.
The master drive detects
oFxxx
and the slave drive
detects
HLCE
.
Examine the wiring between the option and the master drive and
remove the cause of the fault.
HWL
High Water Level
•
The digital input terminal set to
H1-xx = BC
[MFDI Function Selection = High Water Level]
activated or is defective.
•
The digital input terminal set to
H1-xx = 1BC [!
High Water Level]
deactivated or is defective.
•
Decrease the water level.
•
Adjust the terminal set to
H1-xx = BC or 1BC
.
LF
Output Phase Loss
The motor main circuit cable is disconnected.
Connect motor main circuit cable wiring. Correct wiring errors in
the main circuit drive input power.
LF2
Output Current Imbalance
Phase loss occurred in the wiring on the output side
of the drive.
Examine for wiring errors or disconnected wires on the output side
of the drive, and repair problems.
LFB
Low Feedback Sensed
The feedback level is less than the level set in
Y1-08
[Low Feedback Level]
for the time set in
Y1-09 [Low
Feedback Lvl Fault Dly Time]
.
•
Increase the feedback level to more than
Y1-08
.
•
Set
Y1-08
and
Y1-09
correctly.
LOAUX
Low PI Aux Feedback Level
When the drive is running, PI Auxiliary Feedback is
less than the level set in
YF-09 [PI Aux Control Low
Lvl Detection]
for the time set in
YF-10 [PI Aux
Control Low Lvl Det Time]
.
•
Increase the PI Auxiliary Feedback level to be more than
YF-09
.
•
Set
YF-09
and
YF-10
correctly.
LOP
Loss of Prime
The drive used the
Y1-18 [Prime Loss Detection
Method]
setting and measured a pump load that is
less than the level set in
Y1-19 [Prime Loss Level]
for
the time set in
Y1-20 [Prime Loss Time]
, and the
output frequency is
Y1-21 [Prime Loss Activation
Freq]
or more.
•
Examine for a dry well, air in the system, or no water in the
system. Use preferred priming method suggested by the pump
manufacturer to restart the pump.
•
When there is resistance in the pump, let the system pump water
again.
•
Set
Y1-18
to
Y1-21
correctly.
LWL
Low Water Level
•
The digital input terminal set to
H1-xx = BB
[MFDI Function Selection = Low Water Level]
activated or is defective.
•
The digital input terminal set to
H1-xx = 1BB [!
Low Water Level]
deactivated or is defective.
•
Increase the water level.
•
Adjust the terminal set to
H1-xx = BB or 1BB
.
NMS
Setpoint Not Met
The feedback deviates from the setpoint at a level
more than
Y1-15 [Maximum Setpoint Difference]
for
the time set in
Y1-16 [Not Maintaining Setpoint
Time]
.
•
Examine for a blocked impeller, over cycling, or broken pipe.
•
Set
Y1-15
and
Y1-16
correctly.
nSE
Node Setup Error
The drive received a Run command while the Node
Setup function was active.
Stop the drive when the Node Setup function is in use.
oC
Overcurrent
The load is too large.
•
Measure the current flowing into the motor.
•
Replace the drive with a larger capacity model if the current
value is more than the drive rated current.
•
Decrease the load or replace with a larger drive to prevent
sudden changes in the current level.
Overheating caused damage to the motor or the motor
insulation is not satisfactory.
Measure the motor insulation resistance, and replace the motor if
there is electrical conduction or unserviceable insulation.
The motor main circuit cable is contacting ground to
make a short circuit.
•
Examine the motor main circuit cable for damage, and repair
short circuits.
•
Measure the resistance between the motor main circuit cable and
the ground terminal. If there is electrical conduction, replace the
cable.
A short circuit or ground fault on the drive output
side caused damage to the output transistor of the
drive.
•
Make sure that there is not a short circuit in terminals - and
terminals U/T1, V/T2, and W/T3.
•
If there is a short circuit, contact Yaskawa or your nearest sales
representative.
The acceleration time is too short.
•
Calculate the torque necessary during acceleration related to the
load inertia and the specified acceleration time.
•
Increase the values set in
C1-01 or C1-03 [Acceleration Times]
to get the necessary torque.
•
Increase the values set in
C2-01 to C2-04 [S-Curve
Characteristics]
to get the necessary torque.
•
Replace the drive with a larger capacity model.
The drive is trying to operate a specialized motor or a
motor that is larger than the maximum applicable
motor output of the drive.
•
Examine the motor nameplate, the motor, and the drive to make
sure that the drive rated current is larger than the motor rated
current.
•
Replace the drive with a larger capacity model.
