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2 System Commissioning
2
Figure 2-8 Running curve
V (speed)
F3-03
F3-06
F3-04
F3-02
F3-05
F3-07
t (time)
F3-02, F3-03, and F3-04 are used to set the running curve during which the elevator accelerates from
startup to the maximum speed. If the acceleration process is too short causing bad riding comfort, de-
crease the value of F3-02 and increase the values of F3-03 and F3-04 to make the acceleration curve
smoother. If the acceleration process is too long, increase the value of F3-02 and decrease the values
of F3-03 and F3-04.
Adjust F3-05, F3-06, and F3-07 similarly to make the deceleration process appropriate.
Adjustment of mechanical construction
The following table describes the mechanical factors affecting the riding comfort.
The mechanical construction affecting the riding comfort involves installation of the guide rail, guide shoe,
steel rope, and brake, balance of the car, and resonance caused by the car, guild rail and motor. For
asynchronous motor, abrasion or improper installation of the gearbox may arouse poor riding comfort.
No. Mechanical Factor Description
1 Guide rail
Installation of the guide rail mainly involves:
ā¢ Verticality and surface īatness of the guide rail
ā¢ Smoothness of the guide rail connection
ā¢ Parallelism between two guide rails (including guide rails on the counterweight
side)
2 Guide shoe
Tightness of the guide shoes (including the one on the counterweight side) also
inīuences the riding comfort. The guide shoes must not be too loose or tight.
3 Steel rope
The drive from the motor to the car totally depends on the steel rope. Large
īexibility of the steel rope with irregular resistance during the car running may
cause curly oscillation of the car. In addition, unbalanced stress of multiple steel
ropes may cause the car to jitter during running.
4 Brake
The riding comfort during running may be inīuenced if the brake arm is installed
too tightly or released incompletely.
5 Balance of the car
If the car weight is unbalanced, it will cause uneven stress of the guide shoes that
connect the car and the guide rail. As a result, the guide shoes will rub with the
guide rail during running, affecting the riding comfort.
6 Gearbox
For asynchronous motor, abrasion or improper installation of the gearbox may
also affect the riding comfort.
7 Resonance
Resonance is an inherent character of a physical system, related to the material
and quality of system components.
If you are sure that the oscillation is caused by resonance, reduce the resonance
by increasing or decreasing the car weight or counterweight and adding resonance
absorbers at connections of the components (for example, place rubber blanket
under the motor).
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