Adjustments For Elevator Ride Comfort - YASKAWA L1000A Technical Manual

4.6 Setup Procedure for Elevator Applications
Figure 4.13
S3-28
(Torque Compensation
Value with Load Condition 2)
S3-27
(Torque Compensation Value
with Load Condition 1)
Figure 4.17 Torque Compensation at start for the Elevator in Up and Down Direction

◆ Adjustments for Elevator Ride Comfort

This section explains the adjustment of drive settings used to eliminate problems with hunting, vibration, and rollback.
Perform the steps presented in this section after the Basic Application Setup procedure is complete. Also refer to
Comfort Related Problems on page 137
■
Speed Loop Adjustments (CLV and CLV/PM)
The speed control loop uses four different gain and integral time settings that can be adjusted using C5-
The settings are switched over when the motor speed reaches the level set in parameter C5-07.
• Proportional gain and integral time C5-03/04 are used at start when the speed is lower than the setting of C5-07.
• Proportional gain and integral time C5-01/02 are used at speeds above the setting of C5-07.
• Proportional gain and integral time C5-13/14 are used at stop when leveling speed is selected as speed reference and the
speed is lower than the setting of C5-07.
• Proportional gain and integral time C5-19/20 are used During Position Lock at start in CLV/PM.
Increase the gain and shorten the integral time to increase speed control responsiveness in each of the sections. Reduce
the gain and increase the integral time if vibration or oscillation occurs.
■
Inertia Compensation (CLV and CLV/PM)
Inertia compensation can be used to eliminate motor speed overshoot at the end of acceleration or undershoot at the end of
deceleration caused by the system inertia. Adjust the function following the steps below.
1. Properly adjust the speed control loop parameters (C5-
2. Set parameter n5-01 to 1 to enable inertia compensation.
3. Calculate and set n5-02 and n5-03 as follows:
122
Torque Compensation
at Start for the Elevator
in Down Direction
S3-29
(Analog Input
from Load Sensor
with Load
Condition 1)
0
During Load Condition 1
for further descriptions on how to resolve riding comfort problems.
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
During Load Condition 2
Torque Compensation
at Start for the Elevator
in Up Direction
S3-12 (Starting Torque
Compensation Bias during Lowering)
S3-30
(Analog input
from Load Sensor
with Load Condition 2)
).
Analog Input Voltage (V)
parameters.
Riding