Varec 8620 Benutzerhandbuch

Wiring

12

Installation and Operations Manual

Four digital I/O modules can be installed in the 8620 DET. Field wiring should be installed 

directly onto the Digital I/O Rack as shown in Table 3-2 and Table 3-3.

The 8620 DET has two 100-Base-T Ethernet jacks. One is located on the side of the single board 

computer. The second one is located on the communications terminal as shown in Figure 3-1. 

These standard 8-pin RJ-45 connectors are used for ethernet wiring.

Communications Wiring

Table 3-4 describes the wiring considerations for each communications protocol.

2

I/O  1+

3

I/O 1-

4

I/O  2+

5

I/O 2-

6

I/O  3+

7

I/O 3-

8

I/O  4+

9

I/O 4-

Table 3-2:

Field Terminal

1

Red

Standard  Voltage

2

Black

GND

7

Orange

I/O  1

4

Empty

N/A

5

Brown

I/O  2

6

Empty

N/A

7

Blue

I/O  3

8

Empty

N/A

9

Gray

I/O  4

Table 3-3:

Control Terminal — to Single Board Computer

Protocol

Description

Ethernet

Maximum length of 250 feet of twisted pair CAT5 cable.

RS-232

Maximum length of 50 feet of cable.

RS-485/422

Maximum length of 4000 feet of cable.

Table 3-4:

Communications Wiring Information