Motion Control Engineering Nidec iControl, User Manual, Page: 111 / 453

4-22 Manual # 42-02-2223
Final Adjustment
Calibrating the Floor Offsets
iControl provides an easy and precise method of setting the parameters required to stop the car
accurately at every floor. Stopping “spot on” at every floor requires three things:
1. The control system must know the exact position of the car in the hoistway and the exact
position of each landing target (magnet). Without requiring any user adjustment, the
extremely accurate iLand landing system allows iControl to know the car’s position in
the hoistway to within 1/20 inch. And the Floor Height Learn procedure,
see “Learning
Floor Heights” on page 4-2 , allows iControl to know the exact position of the landing
target to the same accuracy.
2. The control system must know the exact position in the hoistway of each landing sill.
Calibrating the floor offsets allows iControl to know this position to an accuracy limited
only by the accuracy of your measurement.
3. The car must be adjusted to stop smoothly and consistently, given the limitations of con-
trolling the machine and brake and the inevitable trade off between stopping accuracy
and ride quality. These adjustments will be performed after the floor offsets are cali-
brated.
Please refer to “Adjusting Leveling and Final Stop” on page 4-25.
Floor offset calibration procedure
This procedure requires IMP software version 002.001.001 or greater and iView software ver-
sion 003.000.001 or greater.
Floor offset calibration can be performed by one or two persons. You will move the car to each
floor that you want to calibrate, and the distance between the car sill and landing sill must be
measured. You can use the form provided to record your measurements (
See “Floor Offset Cali-
bration Record” on page 4-24 ). You need not perform the calibration for all floors each time the
procedure is performed.
The measured values, in decimal inches, will be entered into iView on the Setup > Floor Heights
> Floor Offsets tab). You can make the measurement using a fractional inch square and then
use the conversion table provided to determine the decimal value. But the better way is to use a
machinist square which is marked in decimal inches.
Once the floor offsets have been entered, iControl is able to calculate the exact location of each
hoistway landing sill using the known exact position of the car, known exact position of the tar-
get magnet and the measured distance from the car sill to the hoistway sill. Then, once the car is
adjusted to stop smoothly and consistently, iControl can stop the car “spot on” at every landing.