Parker LX80L, Руководство по эксплуатации продукта

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LX80L Series Product Manual
43
Parker Hannifin Corporation
EMN Automation - Parker
Irwin, Pennsylvania
Speed Limits
Acceleration of linear servo driven tables is typically limited by three (3) factors:
•
Linear Bearings
The linear bearings used in the LX80L are limited to a maximum speed of 3 meters/second.
•
Linear Encoder Limit
The linear encoder has speed limits relative to encoder resolution; these limits are listed below:
Encoder
Resolution
Maximum Velocity Required Post Quadra-
ture Input Bandwidth (²)
5 micron 5 meters/second (
1
) 2 MHz
1 micron 3 meters/second(
1
) 6.7 MHz
0.5 micron 1.5 meters/second 6.7 MHz
0.1 micron 0.3 meters/second 10 MHz
(¹) When using an encoder with 5 micron resolution, velocity limited by speed dependant force.
(²) This is the bandwidth frequency that the amplifier or servo control input should have to operate properly with the encoder output at
maximum speeds. This frequency is post-quadrature, to determine pre-quadrature divide above values by 4. Above frequencies include a
safety factor for encoder tolerances and line loses.
•
Force / Speed Limit
The available force of the LX80L reduces as speed increases. (Chapter 2, LX80L Series Techni-
cal Data )