HEIDENHAIN GAGE-CHEK 2000 Operating Instructions Manual page 90

7
Angle encoders
Encoder series
RON 225
RON 285
RON 285C
RON 785
RON 785C
RON 786
RON 786C
ROD 220
ROD 280
ROD 280C
Performing error compensation
Mechanical influences such as guideway error, tilting in the end positions,
mounting surface tolerances, or poor mounting (Abbe error) can cause measuring
errors. With error compensation, the unit can automatically compensate for
systematic measuring errors during measuring point acquisition. Through the
comparison of nominal and actual values, one or more compensation factors can
be defined and applied during subsequent measurements.
A distinction is made between the following methods:
Configuring error compensation for individual axes
Linear error compensation (LEC): The compensation factor is calculated based
on the specified length of a calibration standard (nominal length) and the actual
distance traversed (actual length). The compensation factor is applied linearly to
the entire measuring range.
Segmented linear error compensation (SLEC): The axis is divided into multiple
segments with the help of a maximum of 200 supporting points. A distinct
compensation factor is defined and applied for every segment.
90
Interface
TTLx2
1 V
PP
1 V
PP
1 V
PP
1 V
PP
1 V
PP
1 V
PP
TTLx2
1 V
PP
1 V
PP
The formulae below enable you to calculate the nominal increment of
the distance-coded reference marks with angle encoders:
Nominal increment = 360°  number of reference marks × 2
Nominal increment = (360° × nominal increment in signal periods)  line
count
Commissioning | Steps for commissioning
Line count/
outputs signals per
revolution
18000
18000
18000
18000
18000
18000
18000
18000
18000
18000
HEIDENHAIN | GAGE-CHEK 2000 | Operating Instructions | 12/2018
Reference mark Nominal
increment
One -
One -
Coded 20°
One -
Coded 20°
One -
Coded 20°
One -
One -
Coded 20°