Mitsubishi Electric FR-D720S SC EC Instruction Manual page 65

Wiring
Using an external power supply
● Sink logic type
Use terminal PC as a common terminal to prevent a malfunction caused by undesirable
current. Do not connect terminal SD of the inverter with terminal 0V of the external power
supply.
(When using terminals PC-SD as a 24V DC power supply, do not install a power supply in
parallel in the outside of the inverter. Doing so may cause a malfunction due to undesirable
current.)
● Source logic type
When using an external power supply for transistor output, use terminal SD as a common
to prevent misoperation caused by undesirable current.
FR-D700 SC EC
AY40 Inverter
Current
AY80 Inverter
Current
Control circuit specifications
Fig. 3-19:
Using an external power supply in connection
with the outputs of a PLC (sink logic type)
Fig. 3-20:
Using an external power supply in connection
with the outputs of a PLC (source logic type)
I001030E
I001031E
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