SRM-U1Z/U1Z-LV-175-E BERNSTEIN WERKZEUGFABRIK, SRM-U1Z/U1Z-LV-175-E Datasheet

SRM-U1Z/U1Z-LV-175-E

Manufacturer Part Number

SRM-U1Z/U1Z-LV-175-E

Description

LIMIT SWITCH, TURRET

Manufacturer

BERNSTEIN WERKZEUGFABRIK

Datasheet

1.SRM-U1ZU1Z-LV-175-E.pdf (6 pages)

Specifications of SRM-U1Z/U1Z-LV-175-E

Actuator Style

Eye

Switch Operation

Slow Action

Contact Voltage Ac Max

240V

Contact Current Ac Max

Switch Terminals

Screw

Actuator Type

Eye

Approval Bodies

BG, CSA

Approval Category

IEC 947-5-5, DIN EN

Rohs Compliant

Yes

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Safety Cable Pull Switches

SRM, SR

General information on safety cable pull switches

The series SR and SRM safety cable pull switching devices

developed and manufactured by BERNSTEIN AG are designed

and approved in accordance with the standards IEC 947-5-5,

DIN EN 60947-5-5 and ISO 13850, i.e. on actuation or in the event

of cable breakage, the emergency stop switching device locks

automatically and can only be reset to its initial setting by means

of the resetting device on the switch.

In order for the overall system to conform to the standards EN

60947-5-5 and EN 13850 governing the emergency stop function

of cable pull switches it is necessary to integrate a spring in the

system. The reasoning behind this requirement is that a person who

triggers the emergency stop functions does not need to consider

the activation direction. With the spring it is possible to pull the

cable in the direction of the cable pull switch, thus activating the

emergency stop function.

Safety cable pull switches may only be used in control power

circuits. Safety cable pull switches are used on accessible sides

of conveyor systems or machines. In contrast to Emergency Stop

switching devices (e.g. mushroom pushbuttons) installed at inter-

vals, with which the emergency stop signal can only be generated

at the device itself, with the safety cable pull switch it is possible

to generate the signal at any point in a section. Depending on the

type of switching device, a span of up to 75 m can be achieved

with a pull cable connected to the pulling element.

SRM

The maximum possible span length of a pull cable switch is always

dependent on the temperature fluctuations to which the system

is exposed. It is possible that the pull cable switch may trip due to

the fact that, owing to its temperature coefficient, the length of

the steel cable can change in response to changes in temperature.

Ultimately, this change in length is dependent on the length of

the cable, the difference in the temperature change and the type

of springs used in the pull cable switch. Overview 1 shows which

cable lengths are possible as a function of change in temperature.

Pull cable counterspringr

With overstretch safeguard based on compression spring principle

Application

Type

Spring Art. No.

0 min.

max.

SR...100/SR...175/SRM...175 SR ...300/SRM...300

3911042153

383

487

min.

max.

3911042154

483

653

Related parts for SRM-U1Z/U1Z-LV-175-E

SRM-U1Z/U1Z-LV-175-E Summary of contents

Page 1

... SRM, SR SRM General information on safety cable pull switches The series SR and SRM safety cable pull switching devices developed and manufactured by BERNSTEIN AG are designed and approved in accordance with the standards IEC 947-5-5, DIN EN 60947-5-5 and ISO 13850, i.e. on actuation or in the event ...

Page 2

... Added to this, the time required to install the cable is drastically reduced. Ver- sions with a conventional eye are, of course, also available. l All variants of the SRM and especially of the SR are equipped with an integrated emergency stop impact button that can be actuated by pressing in hazardous situations. In the same way as pulling the pull cable, the safety contacts are opened and the switch is locked ...

Page 3

... S 3 Ö 6012929087 6012999096 SRM-U1Z/U1Z-QF-300 SRM-A2Z/U1Z-QF-300 6012921091 6012991100 SRM-U1Z/U1Z-LU-300 SRM-A2Z/U1Z-LU-300 6012929088 6012999097 SRM-U1Z/U1Z-QF-300-E SRM-A2Z/U1Z-QF-300-E 6012921092 6012991101 SRM-U1Z/U1Z-LU-300-E SRM-A2Z/U1Z-LU-300-E 37,5 metres (Dimensioned drawing 2) 2 Ö Ö 6012929085 6012999094 SRM-U1Z/U1Z-QF-175 SRM-A2Z/U1Z-QF-175 6012921089 6012991098 SRM-U1Z/U1Z-LU-175 SRM-A2Z/U1Z-LU-175 6012929086 6012999095 SRM-U1Z/U1Z-QF-175-E SRM-A2Z/U1Z-QF-175-E 6012921090 6012991099 SRM-U1Z/U1Z-LU-175-E SRM-A2Z/U1Z-LU-175-E ...

Page 4

... A gL/ Ö (Zb) U1Z Slow-action contacts Rastung / Latch / Verrouillage Rastung / Latch / Verrouillage The pulling force data depend on the type of switch used. (SRM...175/SRM...300) Tolerances: Switching point +/- 0.5 mm, actuating force +/- 250 V/0.27 A; 125 V/0. Ö (Zb) A2Z Slow-action contacts Rastung / Latch / Verrouillage Rastung / ...

Page 5

Safety Cable Pull Switches Max. span length Quickfix (Dimensioned drawing 1) Quickfix N.A. (Dimensioned drawing 2) Öse (Dimensioned drawing 3) Approvals Technical data Electrical data Rated insulation voltage Rated operating voltage Conventional thermal current Utilization category Short-circuit protection Protection class ...

Page 6

S 4 Ö 6011629032 6011691049 SR-U2Z-QF 100 SR-A4Z-QF 100 6011629031 6011691052 SR-U2Z-NA-QF 100 SR-A4Z-NA-QF 100 6011621030 6011691033 SR-U2Z 100 SR-A4Z 100 Contact type Action contacts Circuit symbol Schaltdiagramm On Off 2 ...

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