Lenze 9400 - Manual (Page 249)

Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
249
6 Encoder evaluation
6.3 Parameter setting
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Calculation of the position encoder gearbox factor C02522 and C02523
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:  Feed constant ( 36)
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
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DME
5000
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Parameter Info Lenze setting
Value Unit
C00420 Number of encoder increments 8482
C00422 Encoder type Absolute value encoder (Hiperface)
C00490 Position encoder selection Encoder on X8
C00495 Motor encoder selection Resolver on X7
C02522 Gearbox factor numerator: position encoder 84823 -
C02523 Gearbox factor denominator: position encoder 84820
C02524 Feed constant 848.23 mm
C02570 Position control structure Position controller is
active