hpmont HD5L series - Page 33

Chapter 4 Electrical Installation Shenzhen Hpmont Technology Co., Ltd
―24― HD5L Series Controller User Manual
3. If the controller’s internal 24V power supply is used, the common emitter output connection of
the NPN transistor in the external controller is as shown in Figure 4-11.
Figure 4-11 NPN signal input connection when using internal 24V power supply
4. If the controller’s internal +24V power supply is used, the common emitter output connection of
the PNP transistor in the external controller is as shown in Figure 4-12. (Note that the SEL and
the P24 are not short-circuited)
Figure 4-12 PNP signal input connection when using internal 24V power supply
+ 3.3V
+
-
R
+ 24V
P24
SEL
DI1
+ 3.3V
+
-
COM
DI6
R
6
1
External
controller
NPN connection
using internal power
+ 3.3V
+
-
R
+ 24V
P24
SEL
DI1
+ 3.3V
+
-
COM
DI6
R
6
1
External
controller
PNP connection
using internal power