Mitsubishi FR - S500 Instruction Manual page 36

2) Source logic type
In this logic, a signal switches on when a current flows into the corresponding signal
input terminal.
Terminal PC is common to the contact input signals. For the open collector output
signals, terminal SE is a positive external power supply terminal.
PC
Current
STF
STR
Connecting the 0V terminal of the
external power supply for transistor
output to terminal SD prevents a
malfunction caused by a undesirable
current.
A current flows out of
the corresponding
signal RUN
R
R
27
Inverter
RUN
SE
24VDC
AY-80
9
1
2
10
AX80
1
R
R
9
Inverter
PC
24VDC
STF
(SD)
STR
SD
1