Pull-wire emergency stop switches


ZQ 700

ZQ 700


  • Thermoplastic enclosure
  • one-side operation / wire up to 10 m long
  • Release push button
  • Position indicator
  • Large wiring compartment
  • Twisting of towing eye not possible
  • wire pull and breakage detection
  • One tension force for cable lengths up to 10 m

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ZQ 900

ZQ 900


  • Metal enclosure
  • one-side operation / wire up to 75 m long
  • Release push button
  • Position indicator
  • Robust design
  • Large wiring compartment
  • Twisting of towing eye not possible
  • External watertight collar
  • wire pull and breakage detection

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RS655

RS655


  • Metal enclosure
  • wire pull and breakage detection
  • Protection class IP66, IP67
  • Central connection terminal
  • Mechanical switching position indication
  • two-side operation / wire up to 2 x 100 m

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RS656

RS656


  • Thermoplastic enclosure
  • wire pull and breakage detection
  • Protection class IP66, IP67
  • Central connection terminal
  • Mechanical switching position indication
  • two-side operation / wire up to 2 x 100 m

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T3Z 068

T3Z 068


  • Metal enclosure
  • two-side operation / wire up to 2 x 50 m long
  • Robust design
  • Low actuating force

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Application:
Pull-wire Emergency Stop switches are mounted on machines and sections of plants which cannot be protected by guards. The advantage of pull-wire switches over mushroom head Emergency-Stop push buttons is that the Emergency-Stop command can be triggered anywhere along the wire.

In combination with one of the AES and AZR range safety monitoring modules pull-wire Emergency Stop switches can be used for Control Category 3 or 4 to ISO 13849-1.

Design and mode of operation:
All of the pull-wire emergency stop switches meet the European Standard EN ISO 13850. They have a positive linkage between the NC contacts and the wire rope. The pull-wire emergency stop switches are brought into the operational condition by pre-tensioning the wire, i.e. the NC contacts are then closed and the NO contacts open.

All of the pull-wire emergency stop switches have wire-breakage monitoring. On pulling or breakage of the wire, the NC contacts are positively opened and the NO contacts are closed. The pull-wire Emergency Stop switch can then only be returned to the operational condition by a resetting operation.