IDX 7505 Manual (V1.17 / 2011-APR-11)
15
Copyright © 2011, TRINAMIC Motion Control GmbH & Co. KG
5.2
Step, direction and disable inputs
The inputs
disable
,
dir
and
step
are electrically isolated from the module. The inputs are related to
V
COM
. In a typical application, U
COM
shall be tied to the positive supply voltage of the master and the
inputs are driven by open collector or push/pull outputs. V
OPTOFF
and V
OPTON
must not exceed V
COM
to
avoid reverse polarity for the optocouplers.
OFF: V
COM
- V
IN
< 1.0V
ON: V
COM
- V
IN
>= 3.5V
U
COM
5..24V
Disable
Dir
Step
C
E
A
C
C
E
A
C
C
E
A
C
GND
µC
A: Anode
C: Cathode
C: Collector
E: Emitter
+5V
Figure 5.1: Step, Direction and Disable Inputs
Examples:
