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Kobold NBK-R series, Operating Instructions Manual

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Operating Instructions 

for 

Limit switch 

Model: NBK-R 

NBK-RM 

NBK-RT 

NBK-RA 

Summary of Contents for NBK-R series

Page 1: ...Operating Instructions for Limit switch Model NBK R NBK RM NBK RT NBK RA ...

Page 2: ...echanical Connection 5 7 Electrical Connection 6 8 Commissioning 7 9 Technical Information 8 10 Order Codes 9 11 Illustrations 9 12 EU Declaration of Conformance 10 13 Type Examination Certificate 11 Manufactured and sold by Kobold Messring GmbH Nordring 22 24 D 65719 Hofheim Tel 49 0 6192 2990 Fax 49 0 6192 23398 E Mail info de kobold com Internet www kobold com ...

Page 3: ...ecommend a thorough inspection of the delivery packaging In case of damage please inform your parcel service forwarding agent immediately since they are responsible for damages during transit Scope of delivery The standard delivery includes Electrical Limit Switches Model NBK R NBK RM NBK RT or NBK RA Operating Instructions 4 Regulation Use Any use of the device which exceeds the manufacturer s sp...

Page 4: ...e sure that only accessories are used in hazardous areas that meet all the requirements of the European directives and national legislation The contacts NBK RA with ATEX approval meet the requirements of category 2 GD The proximity switches with ATEX approval are used in the following zones 2G in zone 1 3G in zone 2 2D in zone 21 3D in zone 22 5 Operating Principle Kobold Bypass Limit Transmitter ...

Page 5: ... at will The cable connection must point downwards The switch must be attached close to the bypass tube Due to technical adaptations it may come to malfunctions when installing new contacts in an existing plant If the contact does not switch during the float passes by the preassembled spacer stainless steel must be removed NBK RA NBK RT200 400 The high temperature switch RT200 400 will be mounted ...

Page 6: ...y by e g voltage peaks The use of a contact protection relay is recommended to avoid overloading the reed contacts Valid regulations for hazardous areas and regulations for installation DIN VDE 0165 should be observed when installing the NBK level indicator in zone 1 or 2 of hazardous areas no combustible liquids Note to NBK RT200 The contact must be connected by an adequate switch amplifier e g R...

Page 7: ...witch once in both directions so that the switching func tion is in line with the terminal connection diagram and table below These instructions are often ignored when an alarm lamp is connected directly with the result that the alarm lamp incorrectly indicates a fault When the switch has been passed it is ready for operation and requires no maintenance black 2 blue 1 black 2 brown 3 float above o...

Page 8: ...ximately 15 mm Max switching capacity 80 VA 250 V 1 A Contact resistance 20 m Medium temperature max 200 C RT200 400 C RT 400 Ambient temperature 145 C RT200 350 C RT400 Connection terminal connectors screwed cable gland Housing aluminium die cast housing terminal connectors Protection IP 65 ATEX limit switch model NBK RA Contact operation bistable changeover contact encapsulated Switching hystere...

Page 9: ...igh temperature limit contact tmax 200 C in conjunction with an external intrinsically safe switch amplifier as Simple Operator NBK RT400 High temperature limit contact tmax 400 C NBK RA ATEX limit contact encapsulated II 2G Ex mb IIC T6 T5 Gb II 2D Ex mb IIIC IP67 T 105 C Db 11 Illustrations NBK R NBK RM NBK RT NBK RA ...

Page 10: ...e IP code Also the following EEC guidelines are fulfilled 2014 35 EU Low Voltage Directive 2011 65 EU RoHS Furthermore we declare that the product model NBK RA ELOBAU 610 to which this declaration relates is in conformity with the standards noted below EN 60079 0 2012 General Requirements EN 60079 11 2012 Intrinsic Safety i EN 60079 18 2009 Equipment protection by encapsulation m EN 60079 26 2007 ...

Page 11: ...NBK R NBK R K04 0617 page 11 13 Type Examination Certificate ...

Page 12: ...NBK R page 12 NBK R K04 0617 ...

Page 13: ...NBK R NBK R K04 0617 page 13 ...

Page 14: ...NBK R page 14 NBK R K04 0617 ...

Page 15: ...NBK R NBK R K04 0617 page 15 ...

Page 16: ...NBK R page 16 NBK R K04 0617 ...

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