PD42-1070 Hardware Manual • Hardware Version V1.00 | Document Revision V1.10 • 2018-July-03
16 / 25
Figure 12: Inputs with common anode input with >5V to 24V
The series resistors in the PD42-1070 are 270mOhms. For operation with voltages higher than 5V an
additional external resistor
R
external
is required per input to limit the current. See Table
8
as reference for
additional external resistor values.
COMM Voltage (V) Value of
R
external
(
Ω
)
3.3
-
5
-
9
300
12
500
15
700
24
1K5
Table 8: Additional resistor reference values
Note
R
external
Selection
Take care when selecting an additional external resistor. The resistor type must
have a fitting power rating. This depends on the voltage used at COMM input.
5.3 Optically Isolated Inputs with Common Cathode Input
The optocouplers inside PD42-1070 are bidirectional types (AC/DC). Thus, COMM can also be used as
common cathode connection.
©2018 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at
www.trinamic.com
