____________________ _
ADL300-EPCv2- User Guide Page 13 of 64
Use of cams to count floors
The floor counter cams are arranged so as to simulate a hypothetical incremental encoder "spread" over
the lift shaft. In this hypothetical simulation the cams correspond to the notches on the disk and the two
sensors, on the lift car, represent the photocells.
The system can detect the absolute position of the lift car, as it is immune to counting errors caused by the
lift cables slipping on the pulley or stretching.
Like all incremental encoders, it must first be initialised. This is performed automatically during the
initialisation of the motor incremental encoder by executing the zero cycle sequence.
Floor counter check
The progress of the floor counter can be checked by moving the lift car in the shaft.
If the floors are counted in the opposite order to that intended, invert the inputs of cam A and cam B on the
terminal board of the drive, in the same way as for a normal incremental encoder.
To Next Page
Loading...
Need help?
General