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Mitsubishi Electric F800-E Series Instruction Manual Page 37

Separated converter type.
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Control circuit
Sink logic and source logic
• 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.
• 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.
Current flow concerning the input/output signal
when sink logic is selected
Sink logic
Current
STF
STR
SD
Inverter
• When using an external power supply for transistor output
Sink logic
Use terminal PC as a common terminal, and perform
wiring as shown below. (Do not connect terminal SD of the
inverter with terminal 0 V of the external power supply.
When using terminals PC-SD as a 24 VDC 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 undesirable currents.)
QY40P type transistor
output unit
Constant
voltage
circuit
36
INSTALLATION AND WIRING
R
R
DC input (sink type)
<Example: QX40>
RUN
TB1
R
R
-
TB17
+
SE
24 VDC
Current flow
Inverter
TB1
STF
24 VDC
(SD)
TB2
STR
TB17
PC
TB18
24 VDC SD
Current flow
Current flow concerning the input/output signal
when source logic is selected
Source logic
Sink
Current
connector
Inverter
Source logic
Use terminal SD as a common terminal, and perform
wiring as shown below. (Do not connect terminal PC of the
inverter with terminal +24 V of the external power supply.
When using terminals PC-SD as a 24 VDC 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 undesirable currents.)
QY80 type transistor
output unit
Constant
voltage
circuit
PC
STF
R
STR
R
DC input (source type)
<Example: QX80>
TB1
RUN
R
TB18
-
+
SE
24 VDC
Current flow
Inverter
PC
TB1
STF
TB2
STR
TB17
Fuse
TB18
SD
Current flow
Source
connector
R
24 VDC
(SD)

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