TI120 Series Variable Frequency Drive
System Installation and Wiring
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+3.3V
X7/HDI
X1
PLC
COM
7
1
O
N
O
N
External
controller
Inverter
+3.3V
Shielded cable
Proximal grounding
+24V
Figure 2-7 Use of Internal Power Dry Contact
When using external power supply, the selection and wiring of the dial switch S700 are as shown in
Figure 2-8
+3.3V
X7/HDI
X1
PLC
COM
7
1
O
N
O
N
+3.3V
20-28V
+24V
External
controller
Shielded cable
Proximal grounding
Inverter
Figure 2-8 Use of External Power Dry Contact
NPN wiring mode of open collector