Siemens AS 235 appendix Standard cabinets and accessories, System cabinet accessories

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Automation systems

Standard cabinets

Standard cabinets and accessories

Standard cabinets and accessories

￿The AS 235 and AS 235 H automation systems can be delivered in 400 mm or 600 deep standard cabinets with or without a heat exchanger. The following standard ordering configurations are available:

• Standard cabinet without heat exchanger, degree of protection IP 20, cabinet depth 400 mm

• Standard cabinet without heat exchanger, degree of protection IP 20, cabinet depth 600 mm 1)

• Standard cabinet with heat exchanger, degree of protection IP 54, cabinet depth 600 mm

Options, to be ordered in addition:

• Upgrading set for standard cabinets, degree of protection IP 10 to degree of protection IP 20 2)

• Fan subassembly

In the cabinets with degree of protection IP 20, heat dissipation is by means of through-ventilation. The outside air circulates through the cabinet and dissipates the produced heat. The dis- advantage of this type of heat dissipation is that dirt may be deposited if dust is present in the ambient air. This disadvantage does not occur in cabinets with heat exchangers. The max. per- missible thermal load is 700 W at an ambient temperature of 40 °C.

In the cabinets with heat exchanger (degree of protection IP 54), the air within the cabinet and outside remain separated. These cabinets must be used if the ambient conditions deviate from the permissible values as a result of rough operating conditions.

Examples include the chemical industry, iron and steel industry, mining, and plants exposed to salty atmospheres. The max. thermal load is 1000 W at an ambient temperature of 40 °C.

The standard cabinet can be used either without forced ventila- tion or provided with one or two fan subassemblies depending on the permissible thermal load of the cabinet, the desired design and, especially, the I/O modules used.

The fan subassembly 6DS9 943-8AA is used for forced ventila- tion. This subassembly contains three fans whose speeds are monitored, as well as an electronic fuse.

In cabinets with heat exchangers, the fan monitoring functions of the fan subassemblies and of the heat exchanger are connected in series. The failure signal LK is connected to the basic unit.

Each standard cabinet has 2 thermostats to measure overtem- peratures. See the following pages for configuring guidelines concerning the permissible thermal load.

The basic cabinets are always delivered without side panels and partitions since they can be installed individually, as double cab- inets, or in a cabinet row depending on the location and the size of the system. Extension cabinets are supplied with one parti- tion. The side panels and partitions must be additionally ordered as required.

Basic and extension cabinets can also be supplied as a double cabinet screwed together with a low-impedance connection.

A cabinet row lamp can be fitted into the top bezel panel of the first cabinet when installing cabinets in rows.

The rooms in which the cabinets are installed should be suffi- ciently large (ceiling height approx. 3 m). They should also be dry and dust-free. Air-conditioning must be provided if neces- sary.

￿	Ordering data	Order No.
	System cabinet accessories
	Side panels and partitions /
	mounting of double cabinets
	Side panel for standard cabinets,
	with mounting parts, assembled
	– 400 mm wide	6DS9 906-8FA
	– 600 mm wide	6DS9 906-8KA
	Partition with mounting parts and
	set of fittings for joining cabinets
	• For 400-mm deep cabinets
	– Without cut-outs	6DS9 906-8GA
	– With fire bulkhead	6DS9 906-8HA
	– With cut-outs	6DS9 906-8JB
	• For 400-mm deep cabinets
	– Without cut-outs	6DS9 906-8LA
	– With cut-outs	6DS9 906-8MA
	Set of fittings for joining cabi-	6DS9 906-8EA
	nets
	without partition
	Conversion of a basic cabinet	6DS5 707-8AA
	and an extension cabinet to a
	double cabinet
	(delivered as double cabinet)
	Cabinet accessories
	Cabinet row lamp	6DS9 905-8DA
	with mounting parts and connec-
	tion cables, installed
	Cabinet connection elements
	(SAE)
	Cabinet connection element
	with mounting screws and nuts,
	assembled (max. 90 off/cabinet)
	• SAE 32/3	6DS9 907-8BA
	Process side: Maxi-Termi-Point
	2.4 mm x 0.8 mm
	Internal: wire-wrap 1 mm x 1 mm
	• SAE 32/1	6DS9 907-8AA
	Process side and internal: Maxi-
	Termi-Point 2.4 mm x 0.8 mm
	Labelling material in addition:
	For connection of cables
	color-coded in groups of 8
	(TELEPERM M):
	Labelling cards A-H/H-A for 4	6DS9 906-8DA
	cabinet connection elements,
	1 pair
	Labelling strips for cards A-H/	C79165-A3012-C99
	H-Afor 1 cabinet, 1 sheet
	(2 sheets required per cabinet)
	For numbered designation:
	Labelling card 1-32 for 4 cabinet	6XP1 846
	connection elements SAE 32
	Labelling cards 32-1 for 4 cabi-	6XP1 847
	net connection elements SAE 32
	Labelling strips for cards	6XP1 856
	1-32/32-1
	for one cabinet, 1 sheet
	Cabinet connection element
	SAE 32/3 with screw attachment
	SAE 32 S
	(max. 40 off/ cabinet)
	Process side: screw attachment:
	SAE 32 S
	Internal: wire-wrap 1 mm x 1 mm
	Order:

1)Recommended if cabinets without heat exchangers are to be installed combined with cabinets with heat exchangers.

2)For former cabinets with degree of protection IP 10.

Cabinet connection element	6DS9 907-8BA
SAE 32/3 with mounting screws
and nuts, assembled
Screw attachment SAE 32 S	6XP1 828

Siemens PLT 111 · 1999 3/23