Position Sensing/Speed Actual Value Sensing; Direct Position Sensing - Siemens SIMODRIVE 611 Planning Manual

05.01
2.4

Position sensing/speed actual value sensing

Description 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

Measuring
systems which can
S
be evaluated
S
S
S
S
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.
 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
2.4 Position sensing/speed actual value sensing
Rotating encoders with TTL signals (only for analog MSD modules)
Rotating encoders with sine–cosine voltage signals.
Linear scales with sine–cosine voltage signals.
Distance–coded measuring systems (only SIMODRIVE 611 digital with NC)
Measuring systems with sine–cosine voltage signals and EnDat/SSI inter-
face (linear scales, single and multi–turn encoders)
2 System Configuration
2-27
2