6
6.2
Positioning mode (P0700 = 3, from SW 2.1)
6-399
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
6.2.7
Adjusting absolute measuring systems
Axes with absolute value encoders automatically obtain their reference
position without any axis motion after power–on.
Prerequisites:
There is an absolute value encoder (single–turn/multi–turn absolute
value encoder) (P0175 = 0)
Absolute value encoder is considered
to have been adjusted (P0175 = 3 for
indirect measuring system P0175 = 4 for direct measuring system)
An absolute value encoder should be adjusted once when commissio-
ning the axis or after opening the
mechanical coupling between the measuring system and mechanical
system, for example, after:
Replacing the measuring system and/or motor
Changing the gearbox ratio (when changing the gearbox factors)
Selection, ”parking axis” (if another EnDat encoder was connected)
Note
”SIMODRIVE 611 universal” can only identify if the mechanical
coupling between the measuring system and mechanical system is
released, if it is powered up.
When a parameter set is changed–over in operation (e.g. a gear
ratio is changed), the ”not adjusted” information is lost at
power–down if ”save to Feprom” is not explicitly initiated.
Before SW 4.1:
If a parameter set changeover was carried out with an adjusted
absolute encoder for a particular motor measuring system, then the
encoder must be re–adjusted.
From SW 4.1:
Using P0239, the behavior for a parameter set changeover can be
set for a motor measuring system.
P0239 = 0: Behavior as before SW 4.1 (standard)
P0239 = 1: For a parameter set changeover, it is only necessary
to adjust the encoder if the mechanical ratio of
P0237/P0238 has been changed.
General
information
Adjusting the
absolute value
encoder
6 Description of the Functions
01.99
! not 611ue !
02.02