Mitsubishi MELSEC L Series User Manual page 47

(2) Precautions
The following describes precautions for wiring to power supply modules.
• Wire cables of the power supply for the programmable controller, I/O power supply, and motor power supply
separately as shown below.
100VAC
200VAC
• Considering the rated current and inrush current of the power supply module, connect a breaker having
appropriate sensing property or an external fuse causing proper blowout. (When using a single
programmable controller, connecting a breaker around 10A or an external fuse is recommended.)
• To minimize a voltage drop, use thick power cables up to 2mm
modules with the shortest distance.
• Do not install the power cables together with the main circuit (high voltage and high current) cables, I/O
signal cables, and common cables. Keep a distance of 100mm or more between them.
• If there is much noise due to a lightning surge or other causes, connect an isolation transformer. For an
isolation transformer, refer to
• After wiring, always attach the included terminal cover to the power supply module and do not touch any
terminal while the power is on or the module is operating.
• Use a Class 2 power supply for a module using a DC power supply.
• Configure a system so that the total current consumption may not exceed 5VDC, the rated output current of
the power supply module. For the specifications of the power supply module, refer to
7.2.
Programmable Isolation
Main
controller power transformer
power supply
supply
Relay
terminal block
I/O power supply
Motor power supply
Inside a control panel
Page 383, Appendix 7.
CHAPTER 4 INSTALLATION AND WIRING
Programmable
controller
T1
I/O equipment
Motor equipment
2
, twist the cables closely, and connect the
4
Page 67, Section
45