10.7.5 Limits
The limits screen covers most of the basic system limits, including current, velocity, and position.
l Current Limits: The current limits are set based on the drive ratings. You can change these limits to be
lower then the default values for the drive, however, this may effect the expected performance of your
application.
l Velocity Limits: The velocity limits are set based on the motor ratings. You can modify these settings
above the ratings of the motor if the application requires some overhead, but be aware the motor has
mechanical limitations and may be damaged if run above those limits. It is best to leave these at the
default ratings for the motor selected.
l Position Limits: The position limits can be set based on your specific machine application requirements.
The Maximum Position Error can be set to cause a fault when the position error exceeds the value you
insert here. Position Limit 0 is tied to the clockwise (positive) motor direction. As the motor reaches the
position entered, the motor will stop and display a warning n107. Position Limit 1 is tied to the counter-
clockwise (negative) motor direction. As the motor reaches the position entered, the motor will stop and
display a warning n108.
l Acceleration Limits: This field allows you to raise accelerations to give the system crisp moves. These
limits default to a low value, so you may wish to change these after the mechanics and other sections of
your system are defined.
10.8 Programmable Limit Switch
10.8.1 Overview
Programmable Limit Switches (PLSs) are used to turn on and off drive digital outputs based on the drive's posi-
tion. Multiple positions can be combined to affect the state of an output when PLSs are combined.
10.8.2 Using Programmable Limit Switches
To use PLSs, you must first configure a digital output as follows:
1. Click on the Digital I/O icon in the the tree view.
2. Set the output of your choice to mode fifteen (see 1 below). In this example, digital output 1 is used.
3. Now that the digital output mode is set for PLS, you can click on the Goto Programmable Limit Switch
link (see 2 below) to open the PLS screen (this screen is also shown in the WorkBench tree view).
The PLS screen is used to establish the positions for the output(s) to turn on.
AKD User Guide | 10 Configuring General Drive Settings
Kollmorgen | December 2010 101
To Next Page
Loading...
Need help?
General
