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Mitsubishi Electric FR-F700PJ Instruction Manual Page 41

Air-conditioning inverter.
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Control circuit specifications
(1) Sink logic type and source logic type
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
R
STR
R
SD
Inverter
RUN
SE
When using an external power supply for transistor output
Sink logic type
Use terminal PC as a common terminal, and perform
wiring as shown below. (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 undesirable currents.)
QY40P type transistor
output unit
TB1
TB2
TB17
Constant
voltage
circuit
TB18
28
Sink
connector
DC input (sink type)
<Example: QX40>
TB1
R
R
TB17
24VDC
Current flow
Inverter
STF
24VDC
(SD)
STR
PC
24VDC SD
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
Use terminal SD as a common terminal, and perform
wiring as shown below. (Do not connect terminal PC of the
inverter with terminal +24V 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 undesirable currents.)
QY80 type transistor
output unit
Constant
voltage
Fuse
circuit
Source
connector
DC input (source type)
<Example: QX80>
TB1
R
R
TB18
Inverter
PC
TB1
STF
24VDC
(SD)
TB2
STR
TB17
TB18
SD
Current flow

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