Beckhoff EL7037 User Manual download pdf (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.

EL70x7114 Version 1.0

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Beckhoff EL7037 User Manual Page 114