Mitsubishi Electric FR-A800, Instruction Manual

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Installation and wiring Control circuit
FR-A800 2 - 41
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.
I001029E
Fig. 2-23: Changing the control logic
RUN
RUN TB1
TB1
TB17
TB18
Current flow concerning the input/output
signals when sink logic is selected
Current flow concerning the input/output
signals when source logic is selected
Current
Current
Sink
connector
Inverter
DC input (sink type)
<Example: QX40>
DC input (source type)
<Example: QX80>
Current flow
Current flow
Inverter
Source
connector