Omron NT-series Programmable Terminal V022-E3-1 User Manual

Page 75

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Note



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Section 2-7

Connection to a C



H

Make the connection to the CPU unit with an I/O connecting cable. The following
restrictions apply to this connection.



Only one CPU unit can be connected.



Up to two I/O units can be connected to one CPU unit. However, it is not possible
to connect an I/O extension unit.



It is not possible to connect a C



H I/O unit after a C200H interface unit. The

C200H interface unit must be the final element in the system.

CPU unit

I/O unit

Max. 2 units

(Rear face of NT600S)

C200H I/F unit

I/O extension cable
(C20M-CNP



2/

C20H-CN



2)

I/O connection cable
(C20H-CN



2)

I/O unit

I/O connection cable
(C20H-CN



2)

When making a connection to a C



H, a noise filter must be installed.

1. Insert the noise filter in the power supply line of the C



H.

2. Make the distance between the noise filter and the C



H as short as pos-

sible, and separate it from the power supply line.

3. Connect the case of the noise filter to the FG face.

4. For the noise filter, use a ZGB2202-01U made by TDK or equivalent.

Noise filter

1

2

4

3

+24V

IN

OUT

24V

+

--

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