Mitsubishi Electric FR-A700 Instruction Manual page 63

Wiring
Sink logic and source logic
● In sink logic, a signal switches on when a current flows from the corresponding signal input
terminal. Terminal SD is common to the contact input signals. Terminal SE is common to
the open collector output signals.
● In source logic, a signal switches on when a current flows into the corresponding signal input
terminal. Terminal PC is common to the contact input signals. Terminal SE is common to
the open collector output signals.
Current flow concerning the input/output
Fig. 3-14: Changing the control logic
FR-A700 EC
signals when sink logic is selected
current
FR-A740
DC input (sink type)
AX40
RUN
Current
Current flow concerning the input/output
signals when source logic is selected
current
SINK
FR-A740
Current
Control circuit specifications
SOURCE
DC input (source type)
AX80
RUN
I001029E
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