Siemens Computer Hardware AS 235 Manual de usuario descargar pdf (Pagina 55)

Siemens PLT 111 · 1999

3/31

Automation systems

Connection diagrams

Connection of process monitors and

parallel monitors

Connection of process monitors and parallel monitors

BK2 BK1

AS 235 basic unit /

AS 235 K basic system

Process

monitor 1

116

117

Process

monitor *)

Process

monitor 2

Via T-pieces Via T-pieces

abc

AC 115 V or

AC 230 V

AC 115 V or

AC 230 V

AC 115 V or

AC 230 V

Fig. 3/16 Connection of process monitors and parallel monitors to an AS 235 basic unit or an AS 235 K basic system,

with distances up to 80 m

In the case of process monitors connected in parallel,

the total of all looped cable lengths (a + b + c + ...) is

decisive for the max. distance.

Example: a = 40 m, b = 30 m, c= 10 m

*) If the RGB video signal is looped via several monitors,

only the same picture can be displayed on all moni-

tors.

3 x BNC

AC 115/230 V

3 x BNC

AC 115/230 V

3 x BNC

AC 115/230 V

Total length > 80 m, < 500 m

80 to 300 m

BK2 BK1

AS 235 basic unit /

AS 235 K basic system

Active

cable

adapter

Active

cable

adapter

(AKA n)

1st monitor in sequence,

with loop-through

BNC sockets

2nd monitor in sequence,

with loop-through

BNC sockets

Last monitor

in sequence

3 x 116

3 x 117

max. 2 m

3 x 117

80 to 300 m

3 x 117

max. 2 m

3 x 117

80 to 300 m

3 x 117

max. 2 m

Fig. 3/17 Connection of process monitors and parallel monitors to an AS 235 basic unit or an AS 235 K basic system,

with distances from 80 up to 500 m

Note:

• It must be possible to separate the video ground

from the protective earth on the monitors (this is

already the case with the SCM 2140-I monitor).

• The 75-Ω terminators are only inserted for the last

monitor in the sequence.

• To prevent impairment of the picture quality, a max-

imum of 3 monitors should be used.

This catalog is out of date, see note on page 1

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 89 90

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