8 Troubleshooting
EN 40 YASKAWA Europe TOEP C710616 92D AC Drive L1000H Quick Start Guide
Operator Programing Errors
An Operator Programming Error (oPE) occurs when an inapplicable parameter is set or an individual parameter setting is
inappropriate. When an oPE error is displayed, press the ENTER button to display U1-18. Monitor U1-18 will display
the parameter that is causing the oPE error.
DC Bus
Undervoltage
(Uv1)
• The voltage in the DC bus fell below the undervoltage
detection level (L2-05).
• The power supply failed or one input phase has been
lost.
• The power supply is too weak.
• Check the power supply.
• Make sure that the power supply can provide enough
voltage.
Control Power
Supply
Undervoltage
(Uv2)
The control power supply does not have enough
voltage.
• Cycle power to the drive. Check if the fault reoccurs.
• Replace the drive if the fault continues to occur.
Soft Charge
Circuit Fault
(Uv3)
The charge circuit for the DC bus is broken.
• Cycle power to the drive and see if the fault reoccurs.
• Replace the drive if the fault reoccurs.
SEQF
The Run command has been removed during
deceleration from selected speed to leveling speed.
• Correct I/O sequence.
NOLOAD
Frequency value, calculated for compensating influence
of car load, is negative.
• Elevator car is empty or incorrect parameters setting.
• Check torque reference values P3-10 to P3-13 and
torque gain P8-01 or repeat teaching function.
NEGTEMP
Teach function executed while oil temperature is input
negatively.
• Check temperature sensor connection.
• Check H3 and H4 and repeat teaching function.
TEACH Status message: Teach run is active.
• Perform empty car teach run or cancel it by setting
P4-01 to 0.
SAVE
Status message: Teach run has been finished
successfully.
• Set P4-01 to 3 to save teaching results.
WRTP
Status message: Teach run has been finished
successfully. The drive re-executed Basic Calculations
teaching automatically.
• Set P4-01 to 3 to save teaching results.
LETA
Leveling run after deceleration from selected speed
took more than 60s: Drive stops, independent from Run
command state.
• Check whole system, especially signals for Run
command and speed selector.
Digital Operator Possible Cause Corrective Action
oPE01 Drive capacity and the value set to o2-04 do not match. Set to o2-04 to the correct value.
oPE02 Parameters were set outside the allowable setting range. Set parameters to the proper values.
oPE03
A contradictory setting is assigned to multi-function contact
inputs H1-03 through to H1-08.
• The same function is assigned to two multi-function inputs.
• Fix any incorrect settings.
• Refer to the Technical Manual for more details.
oPE05
The source of the Up/Down command or speed reference is
assigned to option card (b1-01 or b1-02 = 3), but no option
card is installed.
• Install the required option card.
• Correct the values set to b1-01 and b1-02.
oPE07
H3-02 and H3-10 are set to the same value (this excludes
settings 0 and F).
• Fix any incorrect settings.
• Refer to the Technical Manual for more details.
oPE08
A function has been set that cannot be used in the given
situation (this error often appears after the control mode has
been changed).
• Fix any incorrect setting.
• Refer to the Technical Manual for more details.
oPE10 The V/f pattern setting is incorrect.
• Check the V/f pattern settings.
• Refer to the Technical Manual for more details.
oPE12
The frequency references (P3 parameters) are set incorrectly.
One of the condition is not kept:
P3-01 > P3-02 > P3-03 > P3-04.
Or P7-05 > P3-04.
Or (P1-15 + P1-23) > P1-14.
Or P1-03 > P1-02.
Or P1-11 > P1-12
Or P1-16 > P1-17 > P1-18 > P1-19.
• Check and correct values, entered to P1 parameters and
repeat set P4-01 to 1 again.
Digital Operator AL FLT Possible Cause Corrective Action
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