User's Manual

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Siemens PLT 111 · 1999

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Automation systems

Basic cabinet

AS 235

Standard I/O devices

The standard I/O devices such as process monitor, process

operation keyboard, configuring keyboard, mini floppy disk unit

and logging/message printers are described in Section 5.

The interface modules for operation channel generate the RGB

signals for the process monitors. They also have three 20-mA

current loop interfaces to which the process operation keyboard

or the configuring keyboard and 2 printers (logging and mes-

sage printers) can be connected.

The interface module for operation channel 1 belongs to the

scope of delivery of the basic unit and is always required. A sec-

ond interface module is only required if 2 operating consoles are

to be used via which operation and monitoring or configuring are

to be carried out independently.

The combinations which can be ordered for the standard I/O

devices comprise:

• PBT 65 process operation keyboard

6DS3 305-8BA

• Configuring keyboard 6DS3 303-8AA

with connecting cable, 1 m 6DS8 102-8AC

• Mini floppy disk unit with connecting cables for 6DS3 900-8AE

signal transmission and power supply, 3 m each

• In addition for operation channel 2:

– Interface module for operation channel 2 6DS1 330-8CA

– 3 cable clamps C79363-A3006-B10

– Second PBT 65 process operation keyboard 6DS3 305-8BA

• One process monitor per operation channel

as option:

– Process monitor SCM 2140-I

6GF6100-1BV

1) Order connecting cables for signal transmission and power supply in

addition, see page 5/5 (process operation keyboard)

SV2

AS 235 basic unit

Power distribution subrack

AS 235 basic cabinet AS 235 extension cabinet

EE4

EE5

EE6

EE1

EE2

EE3

AS 235

SVZ DC24V

V1 V2 SI AV

Bus A

Bus B

123456

ML1

ML2

BK2

EAB2

BK1

EAB1

AMD

N-AS

CPU

RAM

BAB/DG

SSO

Slots

for I/O modules

SV1

SV2

Fig. 3/3 AS 235 automation system, design

AMD Interface module for mini floppy disk unit

AV Connection distributor for 20-m local bus

BAB Bus terminator module

BK Interface module for operation channel

BT Flashing pulse generator

CPU Central processor module

DG Diagnostics interface

EAB Interface module for I/O bus

EE Extension unit

GE Basic unit

ML Alarm logic module

N-AS Interface module for 20-m local bus

RAM Memory module

SI Automatic circuit-breaker

SSO Special interface, not used

SV1 Power supply module DC 24 V / DC 24 V

SV2 Power supply module DC 24 V / DC 5 V

SVZ Power distribution subrack DC 24 V

UI Bus converter

V Supply diode

Extension units

Depending on the complexity of the automation function, the

capacity of the basic unit for I/O modules can be increased up

to max. 90 slots by the addition of up to 6 extension units.

Extension units EE1 to EE3 are connected to the central pro-

cessing unit via I/O bus 1 (A) and the interface module for

I/O bus 1 (A). These extension units are accommodated in the

basic cabinet. Extension units EE4 to EE6 are components of the

extension cabinet and thus connected to the central processing

unit via I/O bus 2 (B) and the interface module for I/O bus 2 (B).

An extension unit of the AS 235 automation system consists of a

high subrack with slots for 14 I/O modules (each 2 standard

slots wide). 2 subracks with different process connections are

available for

• Maxi-Termi-Point connections, pins 0.8 mm x 2.4 mm (recom-

mended for direct connection of process cables) or

• wire-wrap connections, pins 1 mm x 1 mm (recommended for

process cable connection via SAE cabinet connection ele-

ments).

2) Order connecting cables for signal transmission in addition,

see page 5/4 (process monitor)

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