hpmont HD3N-TC Series - Page 22

Shenzhen Hpmont Technology Co., Ltd. Chapter 3 Electrical Installation
HD3N-TC Series Inverter User Manual V1.0 ―15―
Digital input (DI) connection
Compatible with DC/AC input signal.
• Input voltage: 15VDC - 56VDC, compatible with 24VDC/36VDC/48VDC.
• Input voltage: 12VAC - 54VAC, compatible with 36VAC/48VAC.
DC signal - Dry contact
Using the internal 24V power supply (SEL and P24 are short-connected at factory) or external power
supply (remove the connector between SEL and P24), their connections are shown in Figure 3-8.
Figure 3-8 Frame3 / Frame4 dry DI contact connection
DC signal - Source/Drain
Using external power supply, the source / drain connection are shown in Figure 3-9. (Remove the
connector between SEL and P24)
Figure 3-9 Frame3 / Frame4 Source / Drain connection when using external power
+24V
COM
P24
SEL
K
DI1...DI6
+24V
COM
P24
SEL
K
DI1...DI6
+
-
15 - 56V
DC
Dry contact
Using internal
power supply
Dry contact
Using external
power supply
C
urrent
Current
+24V
P24
SEL
DI1
COM
DI6
6
1
COM
+
-
External controller External controller
+24V
P24
SEL
DI1
DI6
6
1
DC
15 - 56V
+
-
DC
15 - 56V
Source
Using external
power supply
Drain
Using external
power supply