Connecting To The Power Supply Module - Mitsubishi Electric MELSEC-Q Series User Manual

4.3.3

Connecting to the power supply module

The following diagram shows the wiring example of power lines,
grounding lines, etc. to the main and extension bases.
*1 Ground the LG and FG terminals by using a ground wire as thick and short as possible
(2mm in diameter).
POINT
(1) Use the thickest possible (max. 2 mm
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 inches) 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.
(3) A1S61PN and A1S62PN do not need to be switched as the are 100 to
240VAC wide-range.
100/110VAC
200/220VAC
AC
FUSE
AC
DC
24VDC
24VDC
Connect to 24VDC terminals
of I/O module that requires
24VDC internally.
Extension cable
100-240VAC
Ground wire
Grounding
Solderless terminals
with insulation sleeves
Main base unit
(QA1S38B)
A1S62PN CPU
+24V
24G
(FG)
(LG)
INPUT
100-240VAC
Extension base unit
(QA1S68B)
A1S62PN I/O
+24V
24G
(FG)
(LG)
INPUT
100-240VAC
2
(14 AWG)) wires for the 100/200 VAC
Terminal block
55
*1
*1
*1
*1