3SE2 datasheet(68/100 Pages) SIEMENS

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3SE5, 3SE2 Position Switches

Hinge Switches

General data

9/68

Siemens IC 10 · 2011

■ Overview

3SE5 hinge switches have the same enclosures as the standard

switches (modular system).

Hinge switches

Design

Enclosure sizes

The 3SE5 switches are available as complete units in two enclo-

sure sizes:

• Molded-plastic enclosures according to EN 50047, 31 mm

wide, IP65, 1 cable entry

• Metal enclosures according to EN 50047, 31 mm wide,

IP66/IP67, 1 cable entry

• Plastic and metal enclosures according to EN 50041, 40 mm

wide, IP66/IP67, 1 cable entry

Enclosure versions

Various basic versions can be selected for the enclosures:

• Available with two or three-pole switching elements designed

as snap-action contacts

• Metal enclosures for explosion protection (ATEX) (see pages

9/77 and 9/81)

• AS-Interface version with integrated ASIsafe electronics for all

enclosure designs (see page 9/97)

For a description of the basic switches see page 9/4.

Operating mechanism

The hinge switches are provided for mounting on hinges. The

actuator head is included in the scope of supply. There are two

versions:

• Operating mechanism with hollow shaft, inner diameter 8 mm,

outer 12 mm

• Operating mechanism with solid shaft, diameter 10 mm

■ Benefits

The 3SE5 hinge switches differ from the previous series through

the following new characteristics:

• All actuators can be turned around the axis in increments of

22.5° (see picture on page 9/5).

• The new three-pole contact block 1 NO + 2 NC is available for

all enclosure sizes (see picture on page 9/5).

• The molded-plastic enclosure with a width of 31 mm has sim-

ple and fast wiring equipment which makes it possible to save

from approx. 20 to 25 % of the time when connecting (see pic-

ture on page 9/5).

• The ASIsafe electric component is integrated for the versions

with the AS-Interface connection (see page 9/82); an addi-

tional adapter is not required.

■ Application

The hinge switches are used in those areas where the position of

swivelable protective devices such as doors or flaps must be

monitored. The position of the doors and hinge switches is con-

verted into electric signals with the switches. The switches al-

lows shutdown and signaling without delay in the event of a

small opening angle through the snap-action contacts with an

operating angle of 10°.

Devices are available with enclosure versions to suit the partic-

ular ambient conditions. Different control tasks can be per-

formed with the best contact blocks suited for the particular pur-

pose. Dimensions and fixing points of the enclosures are in

accordance with EN 50041 or EN 50047 standards.

The devices are suitable for use in any climate.

Standards

IEC 60947-5-1 or EN 60947-5-1.

The protective measure of "total insulation" by the molded-plastic

enclosure is guaranteed by the use of molded-plastic

screw-glands.

Safety position switches

For controls according to IEC 60204-1 or EN 60204-1 the de-

vices can be used as a safety position switch. To secure position

switches against changes in their position, keyed techniques

must be employed on installation.

Safety circuits

IEC 60947-5-1 and EN 60947-5-1 require positive opening of the

NC contacts, i.e. for the purposes of personal safety, the assured

opening of NC contacts is expressly stipulated for the electrical

equipment of machines in all safety circuits and marked accord-

ing to IEC 60947-5-1 with the symbol q.

Category 4 according to EN 954-1 can be attained with the 3SE5

hinge switches with q if the corresponding failsafe evaluation

units are selected and correctly installed, e.g. the 3TK28 safety

relays or matching devices from the ASIsafe, SIMATIC or

SINUMERIK product ranges.

IC10_09.book Seite 68 Mittwoch, 15. Dezember 2010 3:41 15

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