GD350A series high-performance multifunction VFD
-31-
S1
S2
COM
PW
+ 24V
COM
+ 24V
Internal power
(
NPN mode
)
S1
S2
COM
PW
+ 24V
COM
+24V
External power
(
NPN mode
)
+ 24V
Figure 4.17 NPN mode
If input signal comes from PNP transistor, set the U-type short connector based on the power used
according to the following figure.
S1
S2
COM
PW
+ 24V
COM
+ 24V
External power
(
PNP mode
)
S1
S2
COM
PW
+ 24V
COM
+ 24V
Internal power
(
PNP mode
)
Figure 4.18 PNP mode
4.5 Wiring protection
4.5.1 Protecting the VFD and input power cable in short circuit
The VFD and input power cable can be protected during short-circuit to avoid thermal overload.
Carry out protective measures according to the following requirements.