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TABLE OF CONTENTSTopicPageI. Man-Machine Safeguarding Principles and Practices . . . . . . . . . . . . . . . 322II. Control Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332III. Risk Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336IV. Safety Standards, CE Marking and the European Machinery Directive . . 340V. Safety Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343VI. Applications and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346Positive-Break ContactsPositive-Mode MountingActuatorGap ToleranceNormally-Closed Contacts(for monitoring)Normally-Open Contacts(for machine control)ActuatorNormally-Closed ContactsOpenNormally-Open ContactsClosedPositive-Guided ContactsRisk Assessment361
I. Man-Machine SafeguardingPrinciples & Practices1Why should machine guard interlocks be“tamper resistant”?Safety professionals recognize that, in many factories,workers often override or bypass safeguards intended toprotect them from injury. Reported motivation includesreal or perceived inconvenience, production incentives,familiarity with the equipment, or simply the challengepresented by the presence of the safeguard to be defeated.Consequently, manufacturers are increasingly recognizingthe need for, and their obligation to provide, safetyinterlocks which are not easily defeated/bypassed by theoperator or maintenance personnel.Additionally, safety standards-making groups encourageuse of interlocks which are not easily defeated using simple,readily-available means (such as a paper clip, tape,rubber band, piece of rope, screwdriver, etc.).For example, the American National StandardsInstitute’s (ANSI) B11.19 2003, Reference Standard forSafeguarding Machine Tools specifically requires:. Barrier guards that protect against unauthorizedadjustment or circumvention.. Interlock devices that are not easily bypassed.. Reduced liabilityWith the growing number of product liability cases, companiesare recognizing the benefits of designing safetycircuits with interlock devices that are difficult to defeat.To further reduce their liability exposure, firms are selectingonly those devices that have been tested and certifiedfor use in safety applications by a recognized, independentthird-party agency.Manufacturers are encouraged to surpass safety designexpectations. As cited at a recent DESIGN NEWS seminarentitled “Product Liability — A Survival Kit for the90’s”, jurors expect companies to go beyond mere compliance.They give greater benefit to firms who havedesigned their products with the latest state-of-the-artmachine guarding safety devices.2What is meant by the term “difficult to defeat”when related to safety interlock switches insafety standards such as ANSI B11.19, ANSIB11.20, ANSI-RIA 15.02, OSHA 1910.212, et al?“Difficult to defeat” is a subjective term related to workers’propensity to override or bypass safety devicesintended to protect them from injury. Colloquially itmeans that the relevant devices or systems cannot bedefeated or bypassed using readily available means(such as a piece of wire, tape, simple hand tool, etc.). Itimplies the basic safety interlock switch design serves asa deterrent to easily overriding or bypassing its intendedfunction.362
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GK-1 CATALOG-HANDBOOK • NINTH EDI
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TZGPICTORIAL PRODUCT INDEXSDGAZ335S
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ALPHANUMERIC PRODUCT INDEXProductSe
Page 17 and 18:
AZ17 TECHNICAL DATAMECHANICAL SPECI
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SERIES AZ17ziIndividually-Coded Mov
Page 21 and 22:
AZ17zi TECHNICAL DATAMECHANICAL SPE
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SERIES AZ15/16DescriptionThe Series
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AZ15/16 TECHNICAL DATAMECHANICAL SP
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AZ15/16 ACTUATOR KEY SPECIFICATIONS
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SERIES AZ16ziIndividually-Coded Mov
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AZ16zi TECHNICAL DATAHousingActuato
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SERIES AZ 200Pulse-Echo BasedNon-Co
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SERIES TZGDescriptionThe Series TZG
Page 37 and 38:
TZG TECHNICAL DATAMECHANICAL SPECIF
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SERIES SDGDescription®The Series S
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SDG TECHNICAL DATAMECHANICAL SPECIF
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SERIES AZ335Tamper-Resistant Movabl
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AZ335 INDIVIDUALLY-CODED ACTUATOR K
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SERIES SHGVCable-less Keyed Mechani
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SERIES AZ415DescriptionThe AZ415 Se
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AZ415 TECHNICAL DATAACTUATOR KEY DI
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42SaferbyDesign
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SERIES AZM170DescriptionThe AZM170
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AZM170 TECHNICAL DATAMECHANICAL SPE
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48AZM170 TECHNICAL DATADIMENSIONS10
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AZM161Solenoid-Latching Safety Inte
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AZM161 TECHNICAL DATAMECHANICAL SPE
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SERIES AZM 200New!Pulse-Echo BasedN
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SERIES MZM 100Non-Contact Magnetic-
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SERIES TZF/TZMDescriptionThe TZF/TZ
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SERIES TZF/TZM TECHNICAL DATAMECHAN
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SERIES TKF/TKMDescription®The TKF/
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SERIES TKF/TKM TECHNICAL DATAMECHAN
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SERIES TZKDescriptionThe TZK Series
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SERIES TZK TECHNICAL DATAMECHANICAL
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SERIES AZM415DescriptionThe AZM415
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AZM415 TECHNICAL DATAWIRING SCHEMAT
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AZS 2305Fail-To-Safe TimerSafety Ca
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FWS 1205Fail-To-Safe Standstill Mon
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FWS 2505Fail-To-Safe Standstill Mon
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80SaferbyDesign
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SERIES STSSafety Guard Door-Handle
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SERIES STSTO ORDER COMPLETE STS DOO
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SERIES STS ACCESSORIESLockout Acces
Page 99 and 100:
SERIES B25Safety Door Handle System
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SERIES TG-1Door Handle For Use With
Page 103 and 104:
SERIES ZSD3-Position Hand-Held Enab
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SERIES GFSSafety Foot Switch®Featu
Page 107 and 108:
GFS SERIES TECHNICAL DATAMECHANICAL
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SERIES SEPK(G)New!2-Hand Control Co
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Series TFA/TFIGuard Alignment AidNe
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ZS71Emergency Cable-Pull Switch (Me
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ZS71 TECHNICAL DATAMECHANICAL SPECI
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ZS73 Heavy-Duty Emergency Cable-Pul
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Page 121 and 122:
ZS75 Heavy-Duty Emergency Cable-Pul
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Page 125 and 126:
Series ZS441 Heavy-Duty Emergency C
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ZS441 TECHNICAL DATAMECHANICAL SPEC
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ZS75S BidirectionalHeavy-Duty Bidir
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ZS75S BIDIRECTIONAL TECHNICAL DATAR
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ZS80 Emergency Cable-Pull Switch (M
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S900Cable-Pull Switch Wire Tensione
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128SaferbyDesign
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SERIES BNS250Coded-Magnet SensorsFe
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SERIES BNS33 & BNS33SCoded-Magnet S
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BNS33 TECHNICAL DATAMECHANICAL SPEC
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SERIES BNS33SStainless Steel Coded-
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SERIES BNS36Coded-Magnet SensorsNew
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SERIES BNS30 & BNS300Coded-Magnet S
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SERIES BNS333Coded-Magnet Sensors w
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SERIES BNS16Coded-Magnet SensorsFea
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SERIES BZ16Dual-Channel Non-Contact
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SERIES BNS-B20New!Coded-Magnet Sens
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SERIES CSS 180New!Pulse-Echo BasedN
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SERIES CSS 34Pulse-Echo Based Compa
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158SaferbyDesign
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AES 1102/AES 1112BNS Compatible Con
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AES 1135/AES 1165BNS Compatible Saf
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AES 1235/AES 1265BNS Compatible Saf
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AES 2135BNS Compatible Safety Contr
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SERIES SRB 211 ANBNS Compatible Saf
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AES 2285/SRB 207 AN BNS Compatible
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176SaferbyDesign
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SERIES AZ 200Pulse-Echo BasedNon-Co
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SERIES AZ 200 TECHNICAL DATAMECHANI
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SERIES AZ 200 WIRING EXAMPLESWIRING
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SERIES AZM 200New!Pulse-Echo BasedN
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SERIES AZM 200 TECHNICAL DATAMECHAN
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SERIES AZM 200 WIRING EXAMPLESWIRIN
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SERIES MZM 100Non-Contact Magnetic-
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SERIES MZM 100 DIAGNOSTICSFunction
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SERIES CSS 180New!Pulse-Echo BasedN
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SERIES CSS 180 TECHNICAL DATASWITCH
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SERIES CSS 180 WIRING EXAMPLE 2Seri
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SERIES CSS 34Pulse-Echo Based Compa
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SERIES CSS 34 TECHNICAL DATASWITCHI
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SERIES CSS 34 WIRING EXAMPLE 2Wirin
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COMPATIBLE PULSE-ECHO SAFETY CONTRO
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208SaferbyDesign
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SERIES TESFDescriptionThe TESF Seri
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SERIES TESF TECHNICAL DATADIMENSION
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Series TESZHinged Safety Interlock
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Series ES95 SBHinged Safety Interlo
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Series TVS335Hinged Safety Interloc
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Series T.C 235/236Hinged Safety Int
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T.C 235 TECHNICAL DATAContact funct
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T.C 236 TECHNICAL DATAContact funct
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226SaferbyDesign
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SERIES Z/T235Safety-Rated, Positive
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Z/T235 TECHNICAL DATAContact functi
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SERIES Z/T236Safety-Rated, Positive
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SERIES Z/T335Heavy-Duty Safety-Rate
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SERIES Z/T336Heavy-Duty Safety-Rate
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SERIES Z332Heavy-Duty Safety-Rated,
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Z332 TECHNICAL DATAContact function
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SERIES C50Compact, Safety-Rated,Pos
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262SaferbyDesign
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264SaferbyDesign
Page 277 and 278:
Introduction - Optoelectronic safet
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Design and operating principleOptoe
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ApplicationSafety distanceEN 999Saf
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Modes of operation and functionsMas
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274SaferbyDesign
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OSSD FAILCOSSD FAILCSafety light cu
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Safety light curtains and safety li
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Safety light grid (retro-reflector)
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Safety light curtains and safety li
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CCSafety light curtains and safety
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Safety light grids with integrated
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==Accessories for safety light curt
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294SaferbyDesign
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Safety monitoring modules for optoe
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Safety monitoring modules for optoe
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300SaferbyDesign
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Safety light barriersSLB 2002030,8
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Safety light barriersSLB 200-C• T
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Safety light barriersSLB 400-C• T
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Safety light barriers accessories S
Page 321 and 322: SERIES SMS 3Safety Pressure MatsFea
Page 323 and 324: SERIES SMS 3 COMPATIBLE SAFETY CONT
Page 325 and 326: OPTIONAL JUNCTION BOX FOR MULTIPLE
Page 327 and 328: 316SaferbyDesign
Page 329 and 330: SERIES SEOptical Safety Edges/Bumpe
Page 331 and 332: SERIES SE TECHNICAL DATAAluminum Mo
Page 333 and 334: SERIES SE TECHNICAL DATATransmitter
Page 335 and 336: SERIES SE TECHNICAL DATASE 304CElec
Page 339 and 340: ModelSRB 201 ZHSRB 301 HC/ROperatin
Page 341 and 342: SERIES SRB 201 ZH &SRB 301 HC/RTwo-
Page 343 and 344: SERIES SRB 202 MSLMuting Safety Con
Page 345 and 346: SERIES SRB 206 &SRB 206 SQGeneral P
Page 347 and 348: SERIES SRB 211 ANGeneral Purpose Sa
Page 349 and 350: SERIES SRB 211 STGeneral Purpose Sa
Page 351 and 352: SERIES SRB 301 LC &General Purpose
Page 353 and 354: SERIES SRB 301 MCGeneral Purpose Sa
Page 355 and 356: SERIES SRB 301 STSERIES SRB 301 ST
Page 359 and 360: SERIES SRB 202 C &SRB 400 CDifferen
Page 361 and 362: SERIES SRB 401 LCGeneral Purpose Sa
Page 363 and 364: SERIES SRB 402 EM &SRB 401 EM-115VS
Page 367 and 368: SERIES PROTECT-IE-02 &PROTECT-IE-11
Page 371: 360
Page 375 and 376: 364FIGURE 2Conventional versus Posi
Page 377 and 378: 7What is meant by a “positive lin
Page 379 and 380: 10What are “self-checking,” “
Page 381 and 382: 15Why are safety interlock switches
Page 383 and 384: II. Control Reliability19What is me
Page 385 and 386: 22What are “redundant” logic ci
Page 387 and 388: III. Risk Assessment26What is “ri
Page 389 and 390: 29Which of these risk category safe
Page 391 and 392: IV. Safety Standards,Marking and th
Page 393 and 394: 38To what type machines does the Eu
Page 395 and 396: 42Why should safety controllers be
Page 397 and 398: VI. Applications and Solutions46Wha
Page 399 and 400: Frequently Asked QuestionsSelection
Page 401 and 402: I. Selection & Application Characte
Page 403 and 404: 5What light curtain resolutions are
Page 405 and 406: 10What is “muting”?“Muting”
Page 407 and 408: 14What questions might I ask to bet
Page 409 and 410: 17How do I calculate the correct
Page 411 and 412: 19After doing the “safety distanc
Page 413 and 414: 24Must light curtains only be used
Page 415 and 416: IV. Standards & Certifications30Doe
Page 417 and 418: Blanking (Fixed Blanking):“Fixed
Page 419 and 420: OSSD:“OSSD” is the abbreviation
Page 421 and 422: SELECTED MACHINE SAFEGUARDINGTERMIN
Page 423 and 424:
Point-of-Operation: the area(s) of
Page 425 and 426:
Safety Enable: (See “Authorized O
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prEN1760-1 Safety of Machinery - Pr
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418SaferbyDesign
Page 431 and 432:
TypeDesignation420123NEMA, UL, CSA
Page 433 and 434:
GENERAL TERMS & CONDITIONS OF SALEO
Page 435:
424NOTES
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