Terminal wire arrangement
INVERTER INTRODUCTION 54
Control logic (SINK/SOURCE) switch
The multi-function digital input terminals on SA3 series inverter can be switched between sink and source by the toggle
switch SW5. The diagram is as follows:
DE
FA
UL
T
0-20mA
120
Ω
SOURCE
0-10V
OPEN
SINK
SW6
SW5
SW4
No matter which mode the multi-function digital input terminal is in, all of them can be considered as a simple switch.
If the switch is “「on」," the control signal will be apply into the terminal. If the switch is “「off」,” the control signal is shut
off.
If "Sink Input” mode is selected, when the multi-function digital input terminal is short-circuited to SD or connected to an
external PLC, the function of this terminal is valid. In this mode, the current flows from the corresponding terminal when
it is short. Terminal “SD” is common terminal of the contact input signals. When the output transistor is powered by an
external power supply, use PC terminal as a common terminal to prevent malfunction due to leakage current.
STF
STR
SD
Inverter
Sink Input: the multi-function control
terminal is shorted directly with SD
Sink Input: the multi-function control terminal
is connected directly with open-collector PLC
PLC
I
I
DC
24V
PC
STF
STR
SD
Inverter
DC
24V
PC
Sink Input: the multi-function control terminal is connected
with open-collector PLC and external power supply
PLC
I
STF
STR
SD
Inverter
DC
24V
PC
DC
24V
If "Source Input” mode is selected, when the multi-function digital input terminal is short-circuited to PC or connected to
an external PLC, the function of this terminal is valid. In this mode, the current flows into the corresponding terminal
when it is short.
Terminal “PC” is common terminal of the contact input signals. When the output transistor is powered
by an external power supply, use SD terminal as a common terminal to prevent malfunction due to leakage current..
STF
STR
PC
Inverter
Source Input:
the multi-function control
terminal is shorted directly with PC
Source Input:
the multi-function control terminal
is connected directly with open-emitter PLC
PLC
I
I
DC
24V
SD
STF
STR
PC
Inverter
DC
24V
SD
Source Input: the multi-function control terminal is connected
with open-emitter PLC and external power supply
PLC
I
STF
STR
PC
Inverter
DC
24V
SD
DC
24V