V3F25/18 drive
Installation Instruction
© 2004 KONE Corporation AM-11.65.020
All rights reserved. 26 (42) (E) 2004-01-08
6 FINE ADJUSTMENTS
It is necessary to fine adjust the setting combinations to optimise the ride comfort.
Before the fine adjustments ensure that the installation is completed and elevator is correctly
balanced:
• 50 % of the rated load in the car.
• Car located in the mid of the elevator shaft.
• Car and counterweight balance deviation tolerance is ± 50 kg (checked in the elevator
shaft by opening the brake).
Refer to the elevator level installation instruction for the prerequisites before the fine
adjustment.
If the elevator mechanics or balancing are changed, the fine adjustment should be repeated.
These adjustments can be done after several successful drives over the full length of travel.
6.1 Drive adjustments and checks (speed control)
Action Too high
parameter value
Too low
parameter value
Change the value of P factor (6_20)
parameter in 0.5 increments.
NOTE!Usually it is better to set the
value as high as possible.
Vibrations and noise
in motor.
Car does not reach
the floor level.
Car may jump during
relevelling.
Relevelling problems.
Change the value of
I factor (6_26)
parameter in 0.5 increments.
Car does not reach
the floor.
May decrease
vibrations.
May cause noise in
motor.
May cause other
vibrations.
Change the value of
Tacho filter time
(6_36)
parameter step by step.
NOTE!This parameter is typically
changed to avoid interference in
tachometer signal.
Car may not reach the
floor.
May cause
overspeeding.
Change the value of
KTW/Q (6_29)
parameter.
KTW/Q = total moving masses divided
by elevator load.
Moving masses = sling + car + car door
+ decoration + counterweight + ropes +
travelling cable + compensation (if
applicable).
It is better to set this a
little bit higher than the
calculated value.
Car does not reach
the floor.
Car movement does
not follow the speed
curve.
Car jumps when
landing a floor.
Relevelling problems.
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