Ground Wiring - Omron CPM1A Operation Manual

Wiring and Connections

3-4-2 Ground Wiring

Grounding
WARNING
!
Units with AC Power
Floor Ducts
Leave at least 200 mm between the wiring and the top of the duct, as shown in
the following diagram.
Control cables and
CPM1A I/O lines CPM1A power lines
Conduits
Separate the CPM1A I/O lines, power and control lines, and power cables, as
shown in the following diagram.
CPM1A I/O lines
É É É É É É É É É É É É
Be sure to ground the earth terminal to less than 100 Ω in order to protect against
electric shock and incorrect operation from electrical noise. Be sure to use a wire
2
of at least 1.25 mm for grounding.
During installation, be sure to ground to 100 Ω max in order to protect against
electric shock.
V1 Units
Ground to 100 Ω max.
AC power supply unit
100 to 240 VAC
Metal plate (iron)
Power cables
Control cables and
CPM1A power lines Power cables
L2/N
L1 COM
NC 00
0 CH
Section 3-4
200 mm min.
01
02
51