6encoder evaluation – Lenze 9400 User Manual
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Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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6
Encoder evaluation
6.3
Parameter setting
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Calculation of the position encoder gearbox factor
Please note that, when the number of encoder increments in the numerator of the following
formula is indicated, the value with decimal places must be given whereas, in the numerator, the
integer (INT = integer) is used for purposes of calculation:
[6-5]
Determination of the position encoder gearbox factor of linear distance measuring devices
Example: Position encoder feedback with a laser distance measuring device
The current position of a positioning unit is detected with a laser distance measuring device (e.g.
»DME5000«) with a Hiperface® interface. A graduation of 0.1 mm has been parameterised in the
distance measuring device.
The positioning unit is moved by 848.23 mm in an axial direction for each revolution of the slip-free
drive roll. The current motor speed is detected by a resolver.
[6-6]
Schematic diagram of feedback with a laser distance measuring device
Short overview of the parameters:
See also:
Position encoder - gearbox factor
Encoder Strichzahl (incl. decimal places)
–
Number of encoder increments (integer)
-----------------------------------------------------------------------------------------------------------------
=
C02522
C02523
--------------------
Number of encoder increments (incl. decimal places)
C00420
----------------------------------------------------------------------------------------------------------------------------------------
=
Motor encoder
Laser distance measuring device
Feed
Laser beam hits reflective surface
Circumference of the drive roll = 848,23 mm
M
DME
5000
?
Parameter
Info
Lenze setting
Value Unit
Number of encoder increments
8482
Encoder type
Absolute value encoder (Hiperface)
Position encoder selection
Encoder on X8
Motor encoder selection
Resolver on X7
Gearbox factor numerator: position encoder
84823 -
Gearbox factor denominator: position encoder
84820
Feed constant
848.23 mm
Position control structure
Position controller is
active