SCHUNK EMH Series, Assembly And Operating Manual

Page 1: ...Translation of the original manual Assembly and Operating Manual EMH Electro permanent magnetic gripper ...

Page 2: ...ations for the purpose of technical improvement Document number 1393220 Version 02 00 22 08 2019 en SCHUNK GmbH Co KG All rights reserved Dear Customer thank you for trusting our products and our family owned company the leading technology supplier of robots and production machines Our team is always available to answer any questions on this product and other solutions Ask us questions and challen...

Page 3: ...tions 8 2 6 Personnel qualification 8 2 7 Personal protective equipment 9 2 8 Notes on safe operation 9 2 9 Transport 10 2 10 Malfunctions 10 2 11 Disposal 10 2 12 Fundamental dangers 10 2 12 1 Protection during handling and assembly 11 2 12 2 Protection during commissioning and operation 11 2 12 3 Protection against dangerous movements 11 2 12 4 Protection against electric shock 12 2 12 5 Protect...

Page 4: ...l sequence Product magnetization 24 6 3 Signal sequence Product ready for operation 25 7 Troubleshooting 26 7 1 Product remains inoperable even after the power supply is turned on 26 7 2 LED Ready does not light up 26 7 3 LED Error flashes 26 7 4 Workpiece is detached from the product 27 7 5 Demagnetization was not performed correctly 27 8 Maintenance 28 8 1 Maintenance intervals 28 8 2 Check and ...

Page 5: ...s manual Illustrations in this manual are provided for basic understanding and may differ from the actual product design In addition to these instructions the documents listed under Applicable documents 6 are applicable 1 1 1 Presentation of Warning Labels To make risks clear the following signal words and symbols are used for safety notes DANGER Danger for persons Non observance will inevitably c...

Page 6: ...114 B 1 2 Warranty If the product is used as intended the warranty is valid for 24 months from the ex works delivery date under the following conditions Observance of the applicable documents Observance of the ambient conditions and operating conditions Parts touching the workpiece and wear parts are not included in the warranty 1 3 Scope of delivery The scope of delivery includes Electric permane...

Page 7: ... apply The proven safety principles in accordance with DIN EN ISO 13849 2 also apply to categories 1 2 3 and 4 Appropriate use of the product includes compliance with all instructions in this manual 2 2 Not intended use Any utilization that exceeds or differs from the appropriate use is regarded as misuse 2 3 Constructional changes Implementation of structural changes By conversions changes and re...

Page 8: ...the complete assembly and operating manual Observe the national safety regulations and rules and general safety instructions The following personal qualifications are necessary for the various activities related to the product Trained electrician Due to their technical training knowledge and experience trained electricians are able to work on electrical systems recognize and avoid possible dangers...

Page 9: ...les when handling hazardous substances Wear close fitting protective clothing and also wear long hair in a hairnet when dealing with moving components 2 8 Notes on safe operation Incorrect handling of the personnel Incorrect handling and assembly may impair the product s safety and cause serious injuries and considerable material damage Avoid any manner of working that may interfere with the funct...

Page 10: ...product until the malfunction has been rectified Test the product after a malfunction to establish whether it still functions properly and no increased risks have arisen 2 11 Disposal Handling of disposal The incorrect handling of disposal may impair the product s safety and cause serious injuries as well as considerable material and environmental harm Follow local regulations on dispatching produ...

Page 11: ... and do not step into their swiveling range Never move loads without supervision Do not leave suspended loads unattended 2 12 2 Protection during commissioning and operation Falling or violently ejected components Falling and violently ejected components can cause serious injuries and even death Take appropriate protective measures to secure the danger zone Never step into the danger zone during o...

Page 12: ...le Before starting up the machine or automated system check that the EMERGENCY STOP system is working Prevent operation of the machine if this protective equipment does not function correctly 2 12 4 Protection against electric shock Work on electrical equipment Touching live parts may result in death Work on the electrical equipment may only be carried out by qualified electricians in accordance w...

Page 13: ...agnetic and electromagnetic fields Magnetic and electromagnetic fields can lead to serious injuries Persons with pace makers metal implants metal shards or hearing aids require the consent of a physician before entering areas in which components of the electric drive and control systems are mounted started up and operated Persons with pace makers metal implants metal shards or hearing aids require...

Page 14: ...N 54 0 136 0 537 0 1055 0 Increased product temperature at 5 15 activations per minute C 10 25 11 28 14 37 20 45 Activation time ms 700 700 1000 1200 Rated voltage V DC 24 Max current power A 3 1 3 8 6 1 7 1 Rated current logic mA 150 150 150 150 IP protection class 52 Noise emission dB A 70 Max permissible product temperature C 80 Ambient temperature C Min Max 5 50 Air humidity Min Max 30 80 Incr...

Page 15: ...gic connection connector communication via digital I O interface 3 Power connection connector 4 Magnetic surface 5 LED status display Error flashes red if there is a malfunction The flashing pattern indicates the type of malfunction Troubleshooting 26 Status lights up yellow in the Magnetized state Ready lights up green in the Product ready for operation state 6 Name plate not shown ...

Page 16: ... the combination of AlNiCo and neodymium magnets in the deactivated state the magnetic flux of the AlNiCo magnets passes through the neodymium magnets and closes the magnetic circuit via the steel gripper base body To activate the system an electric current pulse is conducted through the coil This reverses the polarity of the AlNiCo magnets so that the magnetic circuit is closed by the ferromagnet...

Page 17: ...80 Magnetic stainless steel 65 Cast iron 50 In addition material alloys can cause residual magnetism to remain in the workpiece which significantly reduces the holding force Negative impact of heat treatment processes Heat treatment processes can substantially change the magnetic characteristics of a ferromagnetic material When methods suchas forging hardening tempering or sintering are used the s...

Page 18: ... taken into account if due to production reasons a higher surface quality cannot be achieved Workpiece thickness For very thin workpieces e g metal sheets the maximum available holding force cannot be used due to physical reasons Bending can also reduce the usable contact surface and thus the effect of the holding force The resulting peeling effects can also counteract the holding force Heating Ea...

Page 19: ...oduct to the machine system Mechanical connection 19 Ø Connect all electric cables Electrical connection 20 5 2 Mechanical connection Evenness of the mounting surface The values apply to the whole mounting surface to which the product is mounted Requirements for evenness of the mounting surface Dimensions in mm Edge length Permissible unevenness 100 0 02 100 0 05 Mechanical connection schematic di...

Page 20: ...amage due to faulty connection A faulty connection can cause damage to the product Observe the pin allocation of the connecting terminals Make sure that all components are grounded correctly Electrical connection Ø Screw the grounding cable into the ground connection 1 Ø Connect the socket of the logic cable to the logic connection 2 Ø Connect the socket of the power cable to the power connection ...

Page 21: ...ue to incorrect grounding Permanent damage to the electronics possible Ensure reliable equipotential bonding To do this always connect the pin 3 GND with the grounding of the higher level control Logic connection Pin Function Type 1 Magnetization ON Input 2 Magnetization OFF 3 Ground GND 4 Message Workpiece available Output 5 Message Malfunction 6 Message Magnetization status 7 Force signal A Inpu...

Page 22: ...tic fields The integrated electric permanent magnets can pose a risk to people with an active or passive implant People with pacemakers or active or passive implants are prohibited from entering the area of the magnetic field WARNING Danger of crushing due to magnetically attracted tools Tools may be attracted by strong magnetic fields and cause severe injuries Only work in deactivated and demagne...

Page 23: ...chnical data 14 Avoid overheating the product If necessary reduce the number of activations per minute 6 1 Adjusting the holding force The required holding force is adjusted before each magnetization by the system side setting value 1 or by turning off value 0 the force signals A and B Selecting the holding force level Holding force level Percentage of max holding force Force signal A Force signal...

Page 24: ... Adjusting the holding force 23 Note set the force signals in time before the magnetization starts The setting should remain unchanged until the Magnetization signal is switched off 2 Demagnetization signal ensure that the Demagnetization signal is switched off for the total magnetization time needed 3 Magnetization signal switch on the Magnetization signal and leave it switched on for at least 6 ...

Page 25: ...a cable breakage Signal sequence Product ready for operation 1 Force signals A and B Adjusting the holding force 23 2 Product ready for operation signal during the Magnetization and Demagnetization processes the signal retains the status that was last valid prior to setting the force signals The status is updated after approx 7 ms at the earliest when the respective process is complete 3 Demagneti...

Page 26: ...lug connection on the product Check the product lines and connections for damage Cable breakage Check the cables and replace if necessary 7 3 LED Error flashes Malfunctions are indicated by the flashing red Error LED Each flashing signal is repeated after a short pause until the message is acknowledged or the malfunction has been rectified Flashing signal Type of malfunction Corrective action LED ...

Page 27: ...s not sufficient Check the magnetic surface and contact surface of the workpiece for air gaps and clean if necessary If required change product positioning on the workpiece Select a higher holding force level and repeat the magnetization process if necessary Logic connection pin allocation 21 Check that the workpiece complies with the technical data Technical data 14 Check workpiece suitability Fa...

Page 28: ...ce of the product Regularly Clean the product and check for damage especially for material accumulation Replace the product if necessary 8 2 Check and repair the product CAUTION Damage caused by faulty disassembly and assembly Incorrect disassembly and assembly can cause damage to the product and or accessories The product and or accessories may only be checked and repaired by SCHUNK ...

Page 29: ...anent magnetic gripper EMH electric ID number 1351485 1351490 1351496 1351499 The partly completed machine may not be put into operation until conformity of the machine into which the partly completed machine is to be installed with the provisions of the Machinery Directive 2006 42 EC is confirmed Applied harmonized standards especially EN ISO 12100 2010 Safety of machinery General principles for ...

Page 30: ...grator for the overall machine Fulfilled for the scope of the partly completed machine Not relevant 1 1 Essential Requirements 1 1 1 Definitions X 1 1 2 Principles of safety integration X 1 1 3 Materials and products X 1 1 4 Lighting X 1 1 5 Design of machinery to facilitate its handling X 1 1 6 Ergonomics X 1 1 7 Operating positions X 1 1 8 Seating X 1 2 Control Systems 1 2 1 Safety and reliabili...

Page 31: ...ks of uncontrolled movements X 1 4 Required characteristics of guards and protective devices 1 4 1 General requirements X 1 4 2 Special requirements for guards X 1 4 2 1 Fixed guards X 1 4 2 2 Interlocking movable guards X 1 4 2 3 Adjustable guards restricting access X 1 4 3 Special requirements for protective devices X 1 5 Risks due to other hazards 1 5 1 Electricity supply X 1 5 2 Static electri...

Page 32: ...on from Annex 1 is to be supplemented from here forward 2 Supplementary essential health and safety requirements for certain categories of machinery X 2 1 Foodstuffs machinery and machinery for cosmetics or pharmaceutical products X 2 2 Portable hand held and or guided machinery X 2 2 1 Portable fixing and other impact machinery X 2 3 Machinery for working wood and material with similar physical c...