Mitsubishi Melsec-Q Series User Manual page 258

10.6.2 Connecting to the power supply module
The following figure shows the wiring example of lines such as power lines and grounding lines to the main base unit
and extension base units.
(1) Singular power supply system
*1: The operation of the ERR terminal is as fllows.
<When the power supply module is mounted on the main base unit>
The terminal turns off (opens) when the AC power is not input, a CPU module stop error (including a reset) occurs, or the
fuse of the power supply module is blown.
<When the power supply module is mounted on the extension base unit>
The terminal is always off (opened).
●
Use the thickest possible (max. 2 mm
wires starting at the connection terminals. Use a solderless terminal for wiring a terminal block. To prevent short-circuit
due to loosening screws, use the solderless terminals with insulation sleeves of 0.8 mm (0.03 inches) or less.
Note that up to two solderless terminals can be connected per terminal block.
●
When LG and FG terminals are connected, ground the wires.
If not, the programmable controller may become susceptible to noise.
Since the LG terminal has a half of the input voltage, touching this terminal may result in electric shock.
●
No system error can be detected by the ERR terminal of an extension base unit. (The ERR terminal is always set to
off.)
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100/110VAC
AC
Fuse
AC
DC
24VDC
Connect to 24VDC
terminals of I/O module
that requires 24VDC
internally.
Extension cable
100VAC
Ground wire
Grounding
Figure 10.46 Single power supply system wiring example
2
Solderless terminals
with insulation sleeves
Main base unit
(Q38B)
Q61P-A1 CPU module
Extension base unit
(Q68B)
Q61P-A1 I/O module
(14 AWG)) wires for the 100/200VAC and 24VDC power cables. Twist these
Terminal block
ERR 1
FG
LG
INPUT
100-120VAC
ERR 1
FG
LG
INPUT
100-120VAC