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
+
-
U
si
n
g
in
te
rn
al
p
o
w
er
su
p
p
ly
U
si
n
g
ex
te
rn
al
p
o
w
er
su
p
p
ly
R: 10kΩ pull-up resistor
f: Digital frequency meter
4