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Mitsubishi Electric FR-E520 Instruction Manual Page 37

Transistorized inverter.
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2) 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
• Use terminal PC as a common terminal to prevent a malfunction caused by
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 the
power supply in parallel outside the inverter. Doing so may cause misoperation due to
undesirable current.)
R
R
AY40 type
transistor output
module
STF
1
2
STR
9
PC
10
24VDC SD
Current flow
27
INSTALLATION AND WIRING
Inverter
AX40
RUN
1
9
SE
24VDC
Inverter
24VDC
(SD)
R
R
2

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