Siemens AS 235 appendix Standard I/O devices, Extension units

This catalog is out of date, see note on page 1

Automation systems

AS 235

Basic cabinet

SV1

SV2SV2

ML1

ML2

1

2

3

4

5

6

BK2

EAB2 BK1

EAB1

AMD

N-AS

CPU

RAM

SSO

BAB/DG

Slots

for I/O modules

AS 235 basic unit

V1	V2	SI	AV	UI	UI	BT
				Bus A	Bus B

GE

AS 235

EE1

EE2

EE3

SVZ DC24V

EE4

EE5

EE6

Power distribution subrack

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

Fig. 3/3 AS 235 automation system, design

	AS 235 basic cabinet	AS 235 extension cabinet
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

VSupply diode

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 1)	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 2) 6GF6100-1BV

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 6-Uhigh 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).

1)Order connecting cables for signal transmission and power supply in addition, see page 5/5 (process operation keyboard)

2)Order connecting cables for signal transmission in addition, see page 5/4 (process monitor)

3/4 Siemens PLT 111 · 1999