Shenzhen Hpmont Technology Co., Ltd. Chapter 4 Electrical Installation
HD3N Series User Manual V1.1 - 31 -
DO2 is open collective output, refer to Figure 4-13.
DO2 is pulse frequency output; DO2 can use internal 24V power supply of HD3N or external power
supply. The connection is shown in Figure 4-14.
Figure 4-14 DO2 connection
DO2
COM
+24V
R
P24
DO2
COM
+24V
R
P24
f
f
12 - 30V
DC
+
-
Using internal power supply
Using external power supply
R: 10kΩ pull-up resistor
f: Digital frequency meter
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