Mitsubishi Electric FR-CC2-H355K Instruction Manual page 41

Control circuit
Sink logic and source logic
• In the sink logic, a signal turns ON when a current exits 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 turns ON when a current enters 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 follows. (Do not connect terminal SD on the
inverter with the terminal 0 V for 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
40
INSTALLATION AND WIRING
R
R
DC input (sink type)
<Example: QX40>
RUN
TB1
R
R
- TB17
+
SE
24 VDC
Current flow
Inverter
TB1 STF
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 follows. (Do not connect terminal PC on the
inverter with the terminal +24 V for 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
24 VDC
(SD)
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)