BECKHOFF EL7037 - Manual (Page 114)

Commissioning
Fig. 124: Setting the Scaling Factor
Note
Adaptation of the scaling factor
The feedback system is directly related to the scaling factor of the TwinCAT NC, so that the
scaling factor always has to be adjusted when the feedback system [
} 109] is changed.
Calculation of the scaling factor
with encoder, 4-fold evaluation:
SF = distance per revolution / (increments x 4) = 360° / (1024 x 4) = 0.087890625 ° / INC
without encoder:
SF = distance per revolution / (full steps x microsteps) = 360° / (200 x 64) = 0.028125 ° / INC
Position lag monitoring
The position lag monitoring function checks whether the current position lag of an axis has exceeded the
limit value. The position lag is the difference between the set value (control value) and the actual value
reported back. If the terminal parameters are set inadequately, the position lag monitoring function may
report an error when the axis is moved. During commissioning it may therefore be advisable to increase the
limits of the Position lag monitoring slightly.
Attention
ATTENTION: Damage to equipment, machines and peripheral components
possible!
Setting the position lag monitoring parameters too high may result in damage to equipment,
machines and peripheral components.
EL70x7 114 Version 1.0