Fine Tuning the Speed Regulator (Quattro DC
4-17
4
iControl DC
Fine Tuning the Speed Regulator (Quattro DC Drive)
In order to properly tune the speed regulator of the Quattro drive, a valid inertia value must be
determined.
1. With a balanced load in the elevator, bring the elevator to the top landing.
2. In order to obtain a valid inertia value, disable motor field weakening by setting A6-
Weak Fld Current to the same value as A6-Full Fld Current.
3. Run the elevator at full contract speed from the top landing to the bottom landing and
then back up to the top landing. Observe D1-Est Inertia for both the down and up direc-
tions. Average the two values and enter the result for A1-Inertia. Please refer to Inertia
Calculation in the Appendix of the Magnetek Quattro DC Elevator Drive Technical Man-
ual.
4. With the system inertia properly adjusted, final tuning of the speed regulator can be per-
formed.
The A1-Response parameter is one parameter that can be used to adjust the speed regulator
(please refer to the Magnetek Quattro DC Drive Technical Manual for tuning/adjustment pro-
cedures).
Shaping the Speed Profile
The pattern graph below charts the profile of car movement between any two landings and calls
out the parameters that define profile shape. The value of the pattern parameters is very impor-
tant in determining the quality of the ride and the overall performance of the elevator. The most
critical parameters are Deceleration, Flare jerk, Approach deceleration, Approach jerk and Lev-
eling speed since they define final stop and therefore greatly affect floor to floor travel time.
Figure 4.1 Pattern Graph
Velocity
Time
Pattern
Initial
Jerk
Acceleration
Low Roll Jerk Low Roll Jerk
High Velocity
High Roll
Jerk
Deceleration
Deceleration
Approach
Deceleration
Approach
Deceleration
Leveling
Distance
Leveling
Distance
Leveling
Velocity
Approach Jerk
Flare Jerk
Leveling
Velocity
Approach Jerk
Flare Jerk
To Next Page
Loading...
Need help?
General