Mitsubishi Melsec-Q Series User Manual page 255

• Momentary power failure may be detected or the CPU module may be reset due to serge caused by
lightening.
As measures against serge caused by lightening, connect a surge absorber for lightening as shown in
Figure 10.43.
Using the surge absorber for lightening can reduce the influence of lightening.
AC
Figure 10.43 Connecting a lightning surge absorber
●
Separate the ground of the surge absorber for lightening (E1) from that of the programmable controller (E2).
●
Select a surge absorber for lightening whose power supply voltage does no exceed the maximum allowable circuit
voltage even at the time of maximum power supply voltage elevation.
Programmable
controller
I/O devices
E1 E1
E2
E1
Surge absorber for lightening
CHAPTER10 LOADING AND INSTALLATION
9
10
3
4
5
6
7
8
10 - 41