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Kobold NBK-R Operating Instructions Manual

Limit switch
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Operating Instructions
for
Limit switch
Model: NBK-R/RM
NBK-RS/RH
NBK-RV/RN

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Summary of Contents for Kobold NBK-R

  • Page 1 Operating Instructions Limit switch Model: NBK-R/RM NBK-RS/RH NBK-RV/RN...

  • Page 2: Table Of Contents

    Dimensions ....................13     Disposal ...................... 14     EU Declaration of Conformance ..............15     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 2 NBK-Rxx K13/0424...

  • Page 3: Note

    If you need an operating manual that corresponds to the technical status of your product, you can request it from us free of charge by email (info.de@kobold.com) in PDF format, stating the relevant document date and serial number. If desired, the operating instructions can also be sent to you by post in paper form for a postage fee.

  • Page 4: Regulation Use

    The switches are also well suited for use in systems with strong vibrations due to the low-mass switching element. The NBK-R/RM/RS/RT and -RV limit switches have a reed small signal switch for low AC/DC voltages. Type NBK-RN also contains a resistor circuit that conforms to two-wire sensors according to EN 60947-5-6 (NAMUR).

  • Page 5: Mechanical Connection

    NBK-Rxx 6. Mechanical Connection NBK-R/RM Attach and tighten the limit indicators (NBK-R, NBK-RM) to the bypass pipe on the opposite side of the roller display using the tension strap provided. The height of the switch contacts may be selected at will. The cable connection must point downwards.
  • Page 6 NBK-Rxx NBK-RN/RV The limit switch NBK-RN/RV is installed using the included pipe clamps. The cable gland must always point downwards. The switching point is about halfway up the housing. The heat protection shield is situated between the switch box and the mounting bracket.
  • Page 7 NBK-Rxx OFF (contact open) level ON (contact closed) NC function: The arrow on the printed circuit board must point upwards Mounting NBK-RN200NO and NBK-RV200NO NBK-Rxx K13/0424 page 7...

  • Page 8: Electrical Connection

    NBK-Rxx 7. Electrical Connection Attention! Observe the allowed electrical ratings for the limit switch. When switching inductive loads such as contactors, relays, etc., it must always be ensured that the electrical limit values are not exceeded, even for short periods, e.g.
  • Page 9 NBK-Rxx Limit switches NBK-R, NBK-RM Colour of Function connecting wire Black Brown NO normally open contact Blue NC normally closed contact Limit switches NBK-RS, NBK-RH Colour of Function connecting wire Black Brown NO normally open contact Grey NC normally closed contact...
  • Page 10 NBK-Rxx Limit switch NBK-RN***NC Connection Function NC contact NC contact Ground Housing potential / Ground (optional) Limit switch NBK-RV***NO Connection Function NO contact NO contact Ground Housing potential / Ground (optional) Limit switch NBK-RV***NC Connection Function NC contact NC contact Ground Housing potential / Ground (optional)

  • Page 11: Commissioning

    The following table shows the switching status of the contacts when the float is below the limit indicator (idle state). If the contact is overrun by the float as the fill level increases, the contacts change their switching state. Type Switching status with float below the contact NBK-R/RM black Level blue brown...
  • Page 12 NBK-Rxx Type Switching status with float below the contact NBK-RV NO Level NBK-RV NO Level Hysteresis Hysteresis is the difference between contact closing and opening points. A hysteresis of approximately 15 mm float travel is achieved by factory tuning of the float magnet and contact strength.

  • Page 13: Technical Information

    NBK-Rxx 9. Technical Information Operating instructions, data sheet, approvals and further information via the QR code on the device or via www.kobold.com 10. Order Codes Operating instructions, data sheet, approvals and further information via the QR code on the device or via www.kobold.com 11.

  • Page 14: Disposal

    NBK-Rxx 12. Disposal Note!  Avoid environmental damage caused by media-contaminated parts  Dispose of the device and packaging in an environmentally friendly manner  Comply with applicable national and international disposal regulations and environmental regulations. Batteries Batteries containing pollutants are marked with a sign consisting of a crossed-out garbage can and the chemical symbol (Cd, Hg, Li or Pb) of the heavy metal that is decisive for the classification as containing pollutants: 1.

  • Page 15: Eu Declaration Of Conformance

    We, KOBOLD Messring GmbH, Nordring 22-24, 65719 Hofheim, Germany, declare under our sole responsibility that the product: Limit Contact model: NBK-R / NBK-RM / NBK-RS / NBK-RH / NBK-RV / NBK-RN to which this declaration relates is in conformity with the following EU directives...

This manual is also suitable for:

Nbk-rmNbk-rsNbk-rhNbk-rvNbk-rnNbk-rn200nc ... Show all

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