Example Of Routing The Power Supply And I/O Wires - Mitsubishi Electric A173UHCPU User Manual

3. MOUNTING AND WIRING

3.5.2 Example of Routing the Power Supply and I/O Wires

POINTS
(1) Use wires as thick as possible (2 mm
wires when connected to the terminals. Use solderless terminals with insulating tubes to prevent
shorting if the screw in the solderless terminal is loose.
(2) Grounding is required if the FG and LG terminals are connected or resistance to noise is reduced.
A shock may be felt when touching the LG terminal as it has a potential of 1/2 input voltage.
This section shows examples of wiring the main base unit and extension base unit
power-supply and ground wires.
AC
Select transformer
according to
Section 3.5.1(c)
AC
DC
Connect to 24VDC terminals
of I/O modules requiring 24VDC
internally.
Extension cable
Ground wire
2
max.) for the 100 VAC, 200 VAC, 24 VDC wires. Twist the
(A17 B, A178B(-S1/S2/S3)) main base unit
100/110VAC
Fuse
24VDC
24VDC
(A1S65B, A1S68B, A168B) extension base unit
A1S61PN
100/110VAC
Ground wire
3 − 11
CPU module
+24V
(Only A171SHCPUN)
-24G
FG
LG
INPUT
100 200VAC
I/O
NC
NC
FG
LG
INPUT
100 200VAC