Speed And Acceleration Control - Motion Control Engineering Motion 4000 Manual

Installation

Speed and Acceleration Control

Motion 4000 generates the performance curve that controls the drive and transfers that infor-
mation to the drive through a serial connection. Speed, acceleration, deceleration, and jerk
parameters are set up through the F7 menu on the controller (HC-MPU board/controller on
Inspection/F7 function switch UP/all other function switches DOWN).
Even though speed and acceleration/deceleration/jerk parameters are determined by Motion
4000 settings, certain drive settings can still have a limiting effect and, if set incorrectly, can
prevent the elevator from reaching commanded speed.
Drive gear ratio, rated RPM, contract speed, roping ratio, and sheave diameter settings dictate
the fastest speed at which the drive will run the motor and must be accurately set on the drive.
In the illustration below, the dashed line labeled DRIVE CLIPPING illustrates what can happen
to the S-curve if drive settings limit commanded speed. Rather than rolling into commanded
speed, the car will drop into a steady speed state abruptly, will run at a less than commanded
speed, and will drop into deceleration abruptly. So, improper drive settings can cause failure to
achieve commanded speed and bumpy transitions at speed/acceleration transition points.
Figure 2.11 Example of Drive Clipping
Standard-F7:168
Manual-F7:173
Alternate-F7:182
Acceleration
Standard-F7:165
Manual-F7:170
Danger-F7:175
Alternate-F7:179
Start Jerk
Leveling Speed (F7:158)
Zero Speed
2-30 Manual # 42-02-2P24
Standard-F7:166
Manual-F7:171
Danger-F7:176
Alternate-F7:180
Roll Jerk
DRIVE CLIPPING
F7-157 Correction Speed
Standard
Alternate
DRIVE CLIPPING
Manual
Proximity Distance
Roll Jerk
Standard-F7:169
Manual-F7:174
Danger-F7:178
Deceleration
Standard-F7:167
Manual-F7:172
Danger-F7:177
Alternate-F7:181
Stop Jerk