Mitsubishi Electric FR-F700 Series Instruction Manual page 27

Wiring
4) 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 signal
when sink logic is selected
Sink logic
current
STF
STR
SD
Inverter
RUN
SE
When using an external power supply for transistor output
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 24VDC 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.)
AY40 type
transistor
output unit
1
2
9
9
10
24VDC SD
22
Sink
connector
R
R
DC input (sink type)
<Example: AX40>
1
R
R
-
+
9
24VDC
Current flow
Inverter
STF
24VDC
(SD)
STR
PC
Current flow
Current flow concerning the input/output signal
when source logic is selected
Source logic
PC
current
STF
R
STR
R
Inverter
RUN
+
SE
24VDC
Current flow
Source logic type
When using a transistor power supply for transistor
output, use terminal SD as a common to prevent
misoperation caused by undesirable current.
AY80 type
transistor
output unit
9
1
2
10
Current flow
Source
connector
DC input (source type)
<Example: AX80>
1
R
R
-
9
Inverter
PC
24VDC
STF
(SD)
STR
SD