Measuring System - Siemens SIMODRIVE 611 universal Function Manual

4 Commissioning
4.10 Linear motors (1FN1, 1FN3 motors)
4.10.6

Measuring system

Determining the
control sense
Determining the
drive direction
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Determining the
counting direction of
the measuring
system
4-188
The control sense of an axis is correct if the positive direction of the
drive (= clockwise rotating field U, V, W) coincides with the positive
counting direction of the measuring system.
Note
The data to determine the drive direction is only valid for Siemens
motors (1FNx motors).
If the positive direction of the drive and positive counting direction of
the measuring system do not coincide, then when commissioning,
the speed actual value (P1011.0) must be inverted in the "measuring
system/encoder" dialog box.
The control sense can also be checked by first parameterizing the
drive, and then manually moving it, with the enable signals inhibited
(switched out).
If the axis is pushed in the positive direction (refer to the definition in
Fig. 4-17), then the velocity actual value must also count in the positive
direction.
The direction of the drive is positive if the primary section moves rela-
tive to the secondary section in the opposite direction to the cable out-
let direction.
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Primary
section
Secondary section (magnets)
Secondary section (magnets)
Primary
section
Fig. 4-17 Determining the positive direction of the drive
The counting direction is determined depending on the measuring
system itself.
S
Measuring systems from the Heidenhain Company
Note
The counting direction of the measuring system is positive, if the
distance between the sensor head and rating plate increases.
Sensor head
Scale
Fig. 4-18 Determining the counting direction for measuring systems from the
Heidenhain Company
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Cable outlet direction
Cable outlet direction
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E Siemens AG 2005 All Rights Reserved
08.01 01.99
N – north pole marking
+
N – north pole marking
Rating plate