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1 Safety Relays ESM. More than safety. Safety More than safety. Around the world the Swabian Quality, reliability, precision specialists in motion sequence control for mechanical and sys- Quality, reliability and precision are the tems engineering. hallmarks of our corporate philosophy. They represent concepts and values EUCHNER's history began in 1940 with to which we feel totally committed. the establishment of an engineering At EUCHNER, quality means that all office by Emil Euchner. Since that our employees take personal respon- time, EUCHNER has been involved in sibility for the company as a whole the design and development of switch- and, in particular, for their own field of gear for controlling a wide variety of work.

2 This individual commitment to motion sequences in mechanical and perfection results in products which systems engineering. In 1953, Emil are ideally tailored to the customers'. Euchner founded EUCHNER + Co., a needs and the requirements of the Emil Euchner, the milestone in the company's history. In market. After all: our customers and company's founder and inventor of the multiple 1952, he developed the first multiple their needs are the focus of all our limit switch, circa 1928. limit switch to this day a symbol of efforts. Through efficient and effective the enterprising spirit of this family- use of resources, the promotion of owned company.

3 Personal initiative and courage in find- ing unusual solutions to the benefit of Automation Safety ManMachine our customers, we ensure a high level of customer satisfaction. We familiar- Today, our products range from ize ourselves with their needs, require- electromechanical and electronic ments and products and we learn components to complex system solu- from the experiences of our cus- tions. With this wide range of products tomers' own customers. we can provide the necessary tech- nologies to offer the right solution for EUCHNER More than safety. special requirements regardless of whether these relate to reliable and precise positioning or to components and systems for safety engineering in the automation sector.

4 EUCHNER products are sold through a world-wide sales network of compe- tent partners. With our closeness to the customer and the guarantee of reliable solutions throughout the globe, we enjoy the confidence of cus- tomers all over the world. Quality made by EUCHNER. 2. Table of contents Safety Relays ESM. General Information 4. Advantages 5. Application examples 6. Article selection table 7. Safety Relays Safety relay 8. to safety category 3. 2 positively driven safety contacts Safety relay 10. to safety category 4. 2 positively driven safety contacts Safety relay 12. to safety category 4. 3 positively driven safety contacts 1 door auxiliary contact Safety 2-hand control relay Safety 2-hand control relay 14.

5 To safety category 4 / IIIC. 2 positively driven safety contacts Expansion modules Safety expansion 16. to safety category 3. 3 positively driven safety contacts Safety time relay expansion 18. to safety category 3. 3 time-delay, positively driven safety contacts Appendix Index 20. Technical Status 03-08/04. 3. Safety Relays ESM. General Information For machines and equipment which make dangerous movements The safety relays' internal switching system is designed to ensure and which could injure persons in the vicinity, the EC machinery that not only will the machine always be switched off in the event directive defines minimum specifications which reduce individu- of internal machine defects, but that it cannot be restarted under al hazards and the associated risk of accidents to a minimum.

6 Any circumstances. If all sources of danger cannot be ruled out by constructive measures, appropriate safeguards must be provided. Safety relays have a variety of uses In practice, movable safety guards are used for these applicati- f to protect people, machinery and manufacturing processes, ons. They are important particularly where access to the danger f to evaluate various types of switchgear and safety guards, zone is required. f to interrupt the energy supply in accordance with stop For example when loading or unloading, trouble-shooting, machine category 0 or 1 in accordance with EN 60204-1. setting and cleaning. which can be simply adapted to suit the required application.

7 In order to provide suitable protection for such access areas, safety switches which have various function principles are used. The compact standard mounting housing ( mm wide) with These are designed to monitor the position of the moveable part DIN rail mounting and the application options up to control of the safety guard and to generate a signal when the safety category 4 in accordance with EN 954-1 make a compelling guard is opened which will dependably break the electric circuit argument for the use of these safety relays. or will ensure that the electric circuit is dependably broken. By simply linking the modules, it is possible to implement most The new series ESM safety relays are designed to dependably combinations of non-time-delay and time-delay safety contacts.

8 Break the electric circuit. The uniform and compact design of the units make them particularly suitable for control cabinets which also frequently On the one hand they reliably evaluate connected switchgear come in a compact configuration. Its simple construction means such as that the function and integration of the individual units is uncomplicated this enables fault detection in the case of f mechanical safety switches with and without a guard locking machinery breakdowns. device, f non-contact safety switches, f E-STOP switchgear, f pressure sensitive mats etc. while on the other they dependably switch off hazardous machine functions. +. 4.

9 Safety Relays ESM. Your Advantages Safety relays are used to evaluate signals generated by safety switches, e-stop switches, 2-hand controls etc. and for subsequent reliable stoppage of hazardous machine functions. f Compact size f Uniform design f Many combination and expansion options so that most applications can be catered for with just a few different safety relays and modules. f low storage costs f Variety of relay types with up to 3 safety contacts and one NC auxiliary contact f Can be used up to safety category 4 and for stop category 0 or 1. f 1 and 2 channel versions available f Various voltage ranges can be supplied f Time-delay (continuously adjustable up to 30 s) and non-time-delay expansion modules can be supplied to match the basic units f 2-hand control module available in standard housing ( mm wide) with DIN rail mounting f Automatic and manual start (monitoring available as an option).

10 F Earth fault and short circuit monitoring of the input channels 5. Safety Relays ESM. Application examples Manual start: Safety relay used in conjunction with EUCHNER safety switch Safety guard closed Safe time relay /. and locked standstill monitor tamper proof Guard locking solenoid 21 22 21 22. 13 14 13 14. SK K. START. Safety guard A1 S11 S21 S12 S14 13 23 33 41. Power supply Relay control and fault monitoring (S11=24 V) (safety function, electro-mechanical). +. Pin assignment K2. UB A1 A2. DC + UB 0V +. AC L1 N K1. A2 S10 S13 14 24 34 42. K. K. M. Manual start: Safety relay and expansion module used in conjunction with EUCHNER safety switch Safety guard closed A1 S11 S16 S15 S25 S26 17 27 37.