Preventa XY2 SB Briefing

Preventa XY2SB

Two-hand control system

Briefing

Property of Schneider Electric

Simply reliable. Simply available.

December 2017

• Introduction to the Harmony/Preventa offer

• Introduction to two-hand control systems

What is it used for?

How should it be electrically designed?

How should it be mechanically designed?

What safety category should it be compliant with?

• Preventa two-hand control solution panorama

Complete individual protection

Robustness in harsh environments

Health and greater comfort for the machine

operator

• Targeted applications

• Where to find further details

• Quiz

Table of contentAgenda

Property of Schneider Electric |

General purpose control

Control offers overview – Harmony and Preventa control units


Hoisting Safety

Pushbuttons, switches, and pilot lights Wireless remote control Foot switches and

two-hand control

Control stations

XALD/K XALGXALE XAPXALF

XB5R/XB4R XB5S/Ø 22

9001K/SK/Ø 30 XVL/Ø 8-12XB6/Ø 16 K Cam

XB4/Ø 22 XB5/Ø 22 XB7/Ø 22

XKB XKMXKD

Seat and joysticks

eXLhoist

Pendant stationXPE Y/B/G XPE M/R

Preventa XY2 SB

XB4 ATEX D

Explosive atmosphere

Two-hand control stations can be used on stamping

presses for setting operations.

• The two-hand control is a safety-related function to help contain the

location of the operator's hands outside the hazardous area, during

a hazardous movement of the machine

• The two-hand control system is defined in EN 574 and

ISO 13851 standards

• Its actuation requires a simultaneous operation by both hands on

actuators, in order to start and maintain operation of a machine

What is a two-hand control used for?


The functional channel is represented by the two-hand

control actuator device (S3 and S4) that corresponds to the

input block.

The safety controller or safety relay corresponds to the

logic block(L1/2), which maintains the internal redundancy

of the safety circuits.

The output is represented by two redundant contactors

(K1 and K2) that are monitored by the logic block

(safety modules) to detect failure.

• To initiate a dangerous movement with a two-hand control system,

both actuators (two-hand control pushbuttons – S3 and S4 - see

diagram below) must be activated simultaneously, which means

within an interval less than 0.5 seconds to energize the contactors

(K1 and K2)

‒ When at least one of the two pushbuttons is released, the energization

is cancelled and remains blocked until both pushbuttons are released

and pressed again synchronously

• A logic device, a safety module or controller, which complies with

the requirements of EN 574/ISO 13851 for two-hand control

systems, should be used to monitor the operation and

detect failure

How should a two-hand control be electrically designed?


The complete definition of the design of the two-hand control system is given in EN 574 and ISO 13851 standards

• The control stations must be designed and installed such that they

cannot be activated involuntarily

• The protective effect of the two-hand control device must not be

easily defeated or rendered inoperative

• The safety distance between the control units and the

hazardous zone must be sufficient to ensure that when only one

operator is released, the hazardous zone cannot be reached before

the dangerous movement has been completed or stopped

‒ According to the application and the machine design, the two-hand

control station can be mounted either directly on the machine housing,

or on a pedestal at a safe machine distance

How should a two-hand control be mechanically designed?


Separation by

distance

Separation

by shields

Position on a horizontal

surface at least 1m10

above floor

Those mechanical design examples enable to prevent

accidental actuation and defeats, and comply with EN 574

and ISO 13851 standards.

Mounting on the

machine housing

Mounting on a pedestal


• The safety category of the two-hand control system

defines the behavior of the parts of a two-hand control

device in the case of failure

• According to the application and the design of the machine,

the required safety category is chosen in accordance with

ISO 13849-1 (safety of machinery standard)

• The safety category of the two-hand control device must

not be less than the category of control of the relevant

safety related part of the machine control system

• The table below describes the relationship between the

types of two-hand control devices and the categories

according to ISO 13849-1

What safety category should the two-hand control be compliant with?


Use of categories (in accordance with ISO 13849-1) in types of two-hand control device.


Preventa two-hand control solution panorama


2-hand control stations

XY2SB

2-hand control desk

XY2SB714

XY2SB724

Safety modules

XPSBAE XPSBCE XPSBF

Description • Control station equipped with 2 control

pushbuttons with ‘N/C+N/O’ break before

make contacts and 1 mushroom emergency

stop pushbutton head.

• Available with or without pre-wired terminal

blocks

• Control station, with or without pre-wired

terminal blocks, and a pedestal

• Safety modules for electrical monitoring of two-

hand control stations

• With 1 or 2 N/O safety circuits

• Additional outputs: 1 N/C contact or 2 solid-

state relays

• Fully complies with EN 574/ISO 13851 for two-

hand control systems.

Material Housing made of highly strong die-casted aluminum, metal XB4 pushbuttons

Mechanical life 1 million operating cycles

Degree of protection IP65 Enclosure: IP40

Certification CE, EAC UL, CSA, TUV, BG

Maximum safety level PL e, category 4 conforming to EN/ISO 13849-1 and SIL 3 conforming to EN/IEC 61508

Potential safety

requirements

(according to the safety

level required by the

application)

• Use of proven components (category 1 conforming to EN/ISO 13849-1)

• Redundancy with partial error detection (category 3 conforming to EN/ISO 13849-1)

• Redundancy + Self-monitoring (category 4 conforming to EN/ISO 13849-1)

A comprehensive solution for a complete individual protection


Preventa XY2SB desk

with very strong and

adjustable pedestal

Enables 3 directional

adjustments: height, rake,

skew.

Harmony XPEM/R metal foot switch offer

Can be mounted complementarily on the

base plate. It enables actuations without the

use of hands.

XPE foot switches propose various options

including with or without protective cover,

trigger mechanism to prevent from accidental

operations.

See Foot switch range Briefing presentation.

Preventa XPSBAE, XPSBCE, XPSBF

safety modules

Monitor electrically the operation of the

two-hand control and detect failures.

The XPSBAE, XPSBCE, XPSBF offers

comply with EN 574 and ISO 13851.

They propose all safety categories, which

can be required by any applications.

Preventa XY2SB two-hand control stations

Is fully compliant with EN 574 and ISO 13851, and

integrates all recommendations to avoid accidental

actuation or defeat.

It includes one metal mushroom emergency stop

pushbutton head.

It has five cut-outs (Ø 22 mm) as standard.

Five additional cut-outs are possible.

It can be supplied with or without pre-wired terminal

blocks.

height

rake

skew

High resistance to oil

• Extreme robustness for demanding environments

• Resistance to shocks (fall of heavy objects)

• Resistance to oil, water, dust: IP 65 conforming to

EN/IEC 60529

• Very long mechanical life: 1 million operating cycles

Robustness in harsh environments


Various hand positions allow greater comfort

for use.

• The ingenious ergonomics of the two-hand control station

incorporates features to significantly reduce work-related illnesses,

particularly “carpal tunnel syndrome”

• The comfort of each user is assured by:

‒ The diverse hand positions for operating the 2 pushbutton actuators,

enabled by the hand rail

‒ Simple and fast adjustments of the control station position.

• Preventa XY2SB two-hand control fully complies with EN 999

standard (Safety of machinery. Positioning of protective equipment

in respect of approach speeds of parts of the human body)

Health and greater comfort for the machine operator


• Two-hand control stations are designed to provide protection against hand injury for numerous machine

types, among which:

Preventa XY2SB two-hand control for diverse applications


Hydraulic presses Guillotine shears Manual assembly stationWood working

• Click here to find info on SE.com

• Click here to find XY2SB on SE.com

• Click here to find XPSBAE/BCE/BF on SE.com

• Click here to find the complete two-hand control

Safety Chain Solution on SE.com

• Click here to access our Digicat

• Click here to access to CAD files

• Click on the link below for FAQs

(frequently asked question)

Where to find details


http://www.schneider-electric.com/ww/en/

https://www.schneider-electric.com/en/product-range/1533-preventa-xy2-sb?parent-category-id=4800&filter=business-4-low-voltage-products-and-systems

https://www.schneider-electric.com/en/product-range/626-preventa-xps/166478271-enabling-movement?N=2333100937&Nr=AND(P_visibility:1,product.siteId:700002,OR(product.catalogId:catalog10007))&Nrpp=10&filter=business-1-Industrial+Automation+and+Control&parent-category-id=3900&parent-subcategory-id=3960https://www.schneider-electric.com/en/product-range/626-preventa-xps/166478271-enabling-movement?N=2333100937&Nr=AND(P_visibility:1,product.siteId:700002,OR(product.catalogId:catalog10007))&Nrpp=10&filter=business-1-Industrial+Automation+and+Control&parent-category-id=3900&parent-subcategory-id=3960

https://www.schneider-electric.com/b2b/en/solutions/system/s4/machine-control-safety-controller-two-hand-control-station/resources.jsp?

http://ak-netstorage.schneider-electric.com/digicat/index.html

http://www.schneider-electric.com/b2b/en/support/country-selector/cad.jsp

http://www.schneider-electric.com/en/faqs/home/?cat=CONTROL_SIGNALING


Quiz

Based on what

you’ve learned so

far, try to answer to

this quiz

?

What is a two-hand control system used for?

Q1

Should the actuations of the two-hand control be electrically monitored?

Q2

What is the minimum mechanical life of XY2SB two-hand control station?

Q4

How is the comfort on Preventa XY2SB two-hand control stations improved?

Q5

Does Preventa offer proposes a solution for a complete two-hand control system compliant with EN

574 and ISO13851 standards?

Q3


Quiz answers

What is a two-hand control system used for?

Q1A two-hand control system provides protection against hand injury. This function is

defined by EN 574 and ISO 13851 standards.

Answers

Should the actuations of the two-hand control be electrically monitored?

Q2Yes, the simultaneous actuation on both actuators should be monitored by a safety

module to detect failure.

What is the minimum mechanical life of XY2SB two-hand control station?

Q4The minimum mechanical life of XY2SB two-hand control station offer is 1 million

operating cycles.

How is the comfort on Preventa XY2SB two-hand control stations improved?

Q5An hand rail enables various hand position, and the position of the control station can be

easily adjusted.

Does Preventa offer proposes a solution for a complete two-hand control system compliant with EN

574 and ISO13851 standards?

Q3

Yes, Preventa offer proposes a complete solution. Both two-hand control stations and

safety modules are compliant with the standards, and the safety modules propose all

safety categories.


Thank you

Preventa XY2 SB Briefing

Technology

Transcript of Preventa XY2 SB Briefing