BECKHOFF DK9222-0909-0012 - Manual (Page 2)

I/O
Bus Terminal
Application Note DK9222-0909-0012
Bus Terminal KL2521
Set value outputs by
variable frequency
+A
-A
+B
-B
24 V DC
Target/
following error
i. e.
Servoamplifiers,
frequency converters
Servomotors
Fig. 1 Connections of the KL2521 pulse train terminal
Set value outputs and the acquisition of actual positions with just one Bus Terminal
The use of the Pulse Train technology to position drives is primarily used in Asia and in the USA. Its origins lie in the
methods for driving stepper motors. The wide acceptance and easy use of the technology resulted in its application to higher
power sectors of drive technology. The interface using Pulse Train technology is nowadays also applied to servoamplifiers
and frequency converters. The user can employ a consistent software and hardware interface, from micro-steppers up to
highpowered servo-drives.
Set value outputs
Target output
Fig. 2 Set value outputs and the acquisition of actual positions with just one Bus Terminal
New Automation Technology Beckhoff 2
For application notes see disclaimer on the last page