Mitsubishi Electric FR-A820-00046 Instruction Manual page 71

Installation and wiring
Sink logic and source logic
● In the 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 the 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
signals when sink logic is selected
Fig. 2-23:
FR-A800
Current
Inverter
DC input (sink type)
<Example: QX40>
RUN
TB1
TB17
Current flow
Changing the control logic
Current flow concerning the input/output
signals when source logic is selected
Sink
Current
connector
Inverter
Control circuit
Source
connector
DC input (source type)
<Example: QX80>
TB1
RUN
TB18
Current flow
I001029E
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