Shanghai STEP Electric Corporation
Chapter 8 Elevator Elevator Commissioning Guide
8.8 Adjust Elevator Comfort
8.8.1 Factors Relating to Elevator Comfort in Operation
(1) Electrical factors:
① Operating curve parameters setting: acceleration, deceleration, S curve bend time, start
brake delay, stop brake delay, etc.;
② Vector control PID parameters: proportional, integral and differential constants, etc.
(2) Mechanical factors: rail verticality, surface roughness, connection, guide shoe tension,
uniformity of steel wire rope tension, etc.
The coordination in the mechanical system is the most fundamental factor to determine the
comfort of the elevator operation; electrical parameters can only cooperate with the mechanical
system, and further improve the comfort. The electrical factor is adjusted by the serial
motherboard parameter and inverter parameter.
If there are problems in mechanical systems affecting the comfort, the serial motherboard
parameter and inverter parameter can only improve comfort, but cannot change the mechanical
defects fundamentally. The commissioning and related technical personnel should pay sufficient
attention to this.
8.8.2 Adjust Elevator Comfort
(I) Adjust Mechanical Factors
1) Slideway:
Slideway surface roughness
Slideway installation verticality
Connections between slideways
The slideway verticality and the parallelism between two slideways should be controlled
within the limits prescribed by the national standard (GB). If the error is too large, it will affect the
elevator comfort in high-speed operation, there will be jitter or oscillation, or the lift car shakes
from left to right in some positions.
The improper connections of slideway will add step feelings to the elevator operation in some
fixed positions.
2) Tension of Guide Shoe
In case the guide shoe is too tight, there will be step feeling, and it will generate brake
feeling at stop; when guide shoe is too loose, the lift car will give shaking feeling.
If the guide shoe is sliding, then a small space should be maintained between the guide
shoe and the slideway. Without the space or even guide shoe rubs the slideway surface, there
will be oscillation or step feeling when the elevator starts and stops.
When commissioning, shake the lift car with your feet from left to right on the car top. It
will be enough if the lift car has an obvious small displacement from left to right.
3) Uniformity of Steel Wire Rope Tension
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