hpmont HD20 Series - Page 40

Shenzhen Hpmont Technology Co., Ltd Chapter 4 Electrical Installation
HD20 Series Inverters User Manual ―25―
Source (drain) connections
1. If the external power supply is used, the source connection is as shown in Figure 4-9. (Note
that the SEL and the P24 are not short-circuited)
Figure 4-9 Source input connection when using external power supply
2. If the external power supply is used, the drain connection is as shown in Figure 4-10. (Note
that the SEL and the P24 are not short-circuited)
Figure 4-10 Drain input connection when using external power supply
+ 3.3V
+
-
R
+ 24V
P24
SEL
DI1
+ 3.3V
+
-
COM
DI6
R
6
1
12－30V
DC
+
-
External
controller
Source connection
using external power
+ 3.3V
+
-
R
+ 24V
P24
SEL
DI1
+ 3.3V
+
-
COM
DI6
R
6
1
DC 12－30V
+
-
External
controller
Drain connection
using external power
4