CV500-SLK21 datasheet(63/182 Pages) OMRON

63 / 182 page

If the I/O wiring and power cables must be placed in the same duct (for example,

where they are connected to the equipment), shield them from each other using

grounded metal plates. In addition, use shielded cables for the I/O signal lines to

improve noise immunity. Also, connect the shielded cables to the ground ( ) ter-

minal of the PC.

Metal plate (iron)

200 mm min.

Grounding at resistance

of less than 100

1 = I/O wiring

2 = General control wiring

3 = Power cables

3-4

Power Supply Units

Use a commercially available 100 to 120-VAC or 200 to 240-VAC power source

to supply power to the AC Power Supply Unit; a 24-VDC power, for the DC Power

Supply Unit. Expansion I/O Racks and Expansion CPU Racks must also be con-

nected to a power source via a Power Supply Unit. If possible, use independent

power sources for the Racks, input devices, and output devices.

Supply power to the CPU Rack and Expansion CPU Rack from the same power

source. If supplied by separate sources or if power is not supplied to the Expan-

sion CPU Rack, the CPU will not operate. It is also recommended that power to

the Expansion I/O Racks be supplied from the same power source as the CPU

and Expansion CPU Racks. In order to supply power to the Expansion I/O Racks

from separate power sources, turn on the power to the Expansion I/O Racks be-

fore turning on power to the CPU Rack.

Supply power to the various parts of the system (power equipment, controls, PC

system, and DC I/O, etc.) via separate power supplies.

Power Supply Units

Section 3-4

CV500-SLK21 bảng dữ liệu(PDF) 63 Page - Omron Electronics LLC