Parker 406LXR Series, Руководство по эксплуатации продукта

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Parker Hannifin Corporation
EMN Automation - Parker
Irwin, Pennsylvania
28
406LXR Series Product Manual Chapter 4 - Performance
Acceleration Limits
Acceleration of the 406LXR is limited by four (4) factors:
•
Linear Bearings
The Linear bearings used in the 406LXR have a continuous acceleration limit of 2 g ’ s. This means
that the bearings are design to take repetitive acceleration of 2 g's and maintain the rated bearing
life. Additionally, the bearings can take a periodic acceleration of up to 5 g ’ s, however continued
accelerations of these magnitudes will reduce bearing life.
• Reduced Bearing Life
Bearing loading due to high acceleration may reduce bearing life to an unacceptable application limit.
This is not usually a limiting factor unless loading is significantly cantilevered causing high moment
loads during accelerations. See Chapter 2, 406LXR Series Technical Data to determine bearing load
life for your application.
• Available Motor Force
This is the primary factor that reduces acceleration. This is simply the amount of motor force
available to produce acceleration. The larger the inertial and or frictional load the lower the
accelerations limit. Motor force data can be found in Chapter 2, 406LXR Table Specifications .
• Settling Time
In many applications reducing cycle time is a primary concern. To this end, the “ settling ” time (the
amount of time needed after a move is completed for table and load oscillating to come within
acceptable limits) becomes very important. In many cases where very small incremental moves are
executed, the settling time is greater than the actual move time. In these cases accelerations may
need to be reduced thus reducing the settling time.