Mitsubishi FR - S500 Instruction Manual page 35

1) Sink logic type
In this logic, a signal switches on when a current flows out of the corresponding
signal input terminal.
Terminal SD is common to the contact input signals. Terminal SE is common to the
open collector output signals.
Current
STF
STR
SD
Connecting a positive external power supply
for transistor output to terminal PC prevents
a malfunction caused by a 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 an
external power supply in parallel with the
inverter. Doing so may cause a malfunction
in the inverter due to a undesirable current.)
A current flows out of
the corresponding
R
signal RUN
R
26
AX40
Inverter
1
RUN
SE 9
24VDC
AY40 type
transistor
output module Inverter
1
STF
2
STR
3
RH
4
RM
5
RL
9
PC
24VDC
10
SD
R
R
24VDC
(SD)