2 System Configuration
2
05.01
2.4 Position sensing/speed actual value sensing
2-27
Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
2.4 Position sensing/speed actual value sensing
The encoder system is used to precisely position and determine the speed ac-
tual value of the drive motors for the particular application. The resolution of the
measuring system and the selection of the control module is of decisive impor-
tant for the positioning accuracy.
2.4.1 Direct position sensing
S Rotating encoders with TTL signals (only for analog MSD modules)
S Rotating encoders with sine–cosine voltage signals.
S Linear scales with sine–cosine voltage signals.
S Distance–coded measuring systems (only SIMODRIVE 611 digital with NC)
S Measuring systems with sine–cosine voltage signals and EnDat/SSI inter-
face (linear scales, single and multi–turn encoders)
The analog main spindle drive modules and the digital drive modules for feed
and main spindle applications can be optionally supplied with a second
measuring system evaluation e.g. for a table measuring system or for spindle
position sensing. The direct measuring system is, for example, required if high
accuracy is to be achieved at the workpiece using a linear scale or if precise
positioning is required when multi–stage gearboxes are used.
Description
Measuring
systems which can
be evaluated
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