Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 80 / 1218

Control circuit Installation and wiring
2 - 50
Sink logic and source logic
●
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.
●
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.
I001029E_G
Fig. 2-27: Changing the control logic
RUN
RUN
TB1 TB1
TB17 TB18
Current flow concerning the input/output
signals when source logic is selected
Current flow concerning the input/output
signals when sink 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