Wiring Of The Contact Input Terminals - Mitsubishi MELIMP Series Instruction Manual

3.3.4 Wiring of the contact input terminals

Use shielded or twisted shielded cables for wiring. Connect one shield sheath to the common
terminal of the corresponding logic connection. Leave the other shield sheath open.
When using contact signals
The following shows the wiring of the terminals STF, STR. The same wiring also applies to the
other terminals.
Sink Logic
The terminal SD is a common terminal.
Drive unit
STF
STR
SD
When using non-contact switches
When using transistor outputs having an external power supply, such as a PLC, to input signals,
perform the following wiring to prevent a malfunction caused by a sneak current from the external
power supply.
The following shows the wiring of the terminals STF, STR. The same wiring also applies to the
other terminals.
Sink Logic
The terminal PC is a common terminal.
PLC
1
2
9
10
External power
supply
R
R
DC24V
Drive unit
DC24V
STF
STR
PC
SD
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Source Logic
The terminal PC is a common terminal.
PC
STF
STR
Source Logic
The terminal SD is a common terminal.
PLC
9
1
2
10
External power
supply
3-16
3. WIRING
Drive unit
DC24V
R
R
Drive unit
PC
DC24V
STF
STR
SD