Wiring To Module Terminals - Mitsubishi Electric MELSEC-A series User Manual

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4.3.3 Wiring to module terminals

This section explains the wiring of power lines and grounding lines to the main and
extension bases.
Connect to the 24VDC
terminals of an I/O module
that requires 24VDC internally.
POINT
(1) Use the thickest possible (max. 2 mm
VAC and 24 VDC power cables. Be sure to twist these wires starting at
the connection terminals. For wiring a terminal block, be sure to use a
solderless terminal. To prevent short-circuit due to loosening screws,
use the solderless terminals with insulation sleeves of 0.8 mm (0.03
inch) or less thick. The number of the solderless terminals to be
connected for one terminal block are limited to 2.
(2) Be sure to ground the LG and FG terminals. Failure to do so may cause
the programmable controller to be susceptible to noise. Note that LG
terminals include the potential as half as that of input voltage; you might
get an electric shock when you touch them.
Insulation
Transformer
AC100/
110V
AC
Fuse
AC
DC
Extension cable
AC100/110V
Grounding wire
Ground
Solderless terminals
with insulation sleeves
A1SJHCPU
INPUT
100-120/200-240VAC
LG
FG
Extension base unit (A1S68B)
A1S61PN
I/O
NC
NC
(FG)
(LG)
INPUT
100-240VAC
2
(14 AWG)) wires for the 100/200
Terminal block
35

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