User Manual

PD42-1070 Hardware Manual • Hardware Version V1.00 | Document Revision V1.00 • 2017-Mar-02

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

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

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.

Terms of delivery and rights to technical change reserved.

Download newest version at www.trinamic.com

Read entire documentation.