Siemens SINUMERIK 840D Simodrive 611 digital - Measuring System

6 Pro
g
rammin
g
the control
6
03/2006
6.10 Linear motors (1FN1 and 1FN3 motors)
6-147
© Siemens AG 2006 All Rights Reserved
SINUMERIK 840D/810D Start-Up Guide (IADC) – 03/2006 Edition
6.10.6 Measuring system
The control direction of an axis is correct if the positive direction of the drive
(= CW rotating field U, V, W) coincides with the positive count direction of the
measuring system.
Note
The instructions for determining the drive direction apply only to Siemens
motors (1FNx motors).
If the positive direction of the drive and the positive counting direction of the
measuring system do not coincide, then the actual speed value must be in-
verted in the “Measuring system/Encoders” dialog during start-up (MD 32110).
It is also possible to check the control direction by parameterizing the drive first
and then moving it manually with the enabling signals inhibited.
If the axis is moved in a positive direction (see definition in Fig. 6-36), then the
actual velocity value must be counted positively.
The direction of the drive is positive if the primary section moves in the opposite
direction to the outgoing cable in relation to the secondary section.
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ
Secondary section (solenoids)
+
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ
Secondary section (solenoids)
+
Primary section Outgoing cable direction
Primary section Outgoing cable direction
Fig. 6-36 Determining the positive direction of the drive
The method by which the count direction is determined depends on the measu-
ring system itself.
1. Heidenhain measuring systems
Note
The count direction of the measuring system is positive if the distance between
the scanning head and the rating plate increases (see Fig. 6-37).
Determining the
control direction
Determining the
drive direction
Determining the
count direction of
the measuring
system