6 Fine Adjustments
YASKAWA Europe TOEP C710616 92D AC Drive L1000H Quick Start Guide EN 31
Uncomfortable, harsh begin of
travel in normal operation
Insufficient start dwell time (P6-02) Increase start dwell time (P6-02)
Too high leakage frequency (P3-07) Reduce leakage frequency (P3-07) by 20%
Too small start dwell ramp (P6-01) Increase start dwell ramp 0.5 Hz at a time
Too little C2-01 time Increase C2-01 time
Uncomfortable, harsh ending
of travel
Too short ramp time Increase C1-04 time
No leveling travel
Reduce C1- and/or C2- deceleration path parameters or
increase switch distance to reach leveling travel
Stop dwell time is too short Increase parameter P6-07 by 20% at a time
Leveling control upper limit is too high Decrease P7-05 by 1 Hz at a time
Leveling time too long when
running with slower speed
than nominal speed
Insufficient deceleration time compensation
before deceleration
Increase parameter P8-05 carefully in steps of 0.01
Car speed is good for Nominal
Speed, but not for
Intermediate or Inspection
Speed
Incorrect torque references
Decrease values, set in P3-11 (for Intermediate Speed) or P3-12
(for Inspection Speed) in small steps
Energy Saving/Overload
function is enabled but the
drive limits the speed to a
value, lower than the
frequency shown in U7-08
Drive too heavy loaded for the given car load Limit car load or select bigger drive
Deceleration path ramp (C1-02) and S-curves
(C2-03 & C2-04) times are too long
Decrease deceleration path parameters
Temperature reading (U7 -02)
is unexpectedly high/low
Broken power connection to the temperature
converter
Correct the power connection
After decelerating to leveling
speed the drive ramps down to
a lower speed
Leveling recovery upper limit (P7-05) is
lower than leveling speed (P3-04)
Increase P7-05 parameter
Decrease leveling speed frequency when P3-04 > 20 Hz
oPE12 alarm is displayed on
the operator
Check speed frequency references
Make sure that P3-01 > P3-02 > P3-03 > P3-04
or P3-04 > P3-07 × P6-05
or P3-04 > P3-07 × P6-06
Excessive vibration in the car
Pump pulsations resonates with the natural
frequency of the elevator structure
Change the pump with a higher or lower flow or use a pulsation
damper (refer to spare part list; Annexure 1)
LETA alarm is displayed on
the operator
Leveling run after deceleration is longer than
60 s
Check lift controller signaling sequence
Make sure speed compensations are done accurately
Incorrect input data and incorrect basic calculations
Incorrect empty car teach run procedure
SEQF alarm is displayed on
the operator
Check the deceleration path parameters
Reduce C1- and/or C2- deceleration path parameters or
increase the switch distance in the shaft
Run (S2) and Speed Selection (e.g. S4)
signals are swapped
Correct the signalling
Elevator controller sends a
travel signal but the drive does
not work
The drive is at alarm mode
Trace the cause, remove it and press reset button to cancel the
alarm
Check if signaling from controller to the drive
is correct
Verify the controller signal wiring
Down Direction Travel
No Down Start
Solenoid D not energized or voltage too low Lift coil to check magnetic pull. See A below
Adjustment 6 turned in too far Turn out adjustment 6
Adjustment 8 turned out too far
Turn in adjustment 8 cautiously
Attention: Danger of travelling through
0-Ring uo on Down Valve X is leaking Change O-ring
No full speed
Solenoid C not energized or voltage too low Lift coil to check magnetic pull. See A below
Adjustment 7 turned in too far Turn out adjustment 7
Down Valve flow guide X too small Check insert size
No down leveling. Elevator
stops before floor level
Solenoid C and D reversed Lift coil to check magnetic pull. See A below
Adjustment 9 turned in too far Turn out adjustment 9 to about 0.05 m/s leveling speed
Spring 9F in adjustment 9 is broken Replace adjustment 9 complete
Problem Possible Cause Corrective Action
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