Schmersal
ZQ 900 Pull-wire Emergency Stop Switches

Key Features

  • Rugged, corrosion-resistant housing … tolerates hostile environments.
  • “Positive-break” NC contacts … assures circuit interruption upon pulling of trip-wire.
  • Push/pull operation … operates if trip-wire is pulled or goes slack.
  • Integrated emergency-stop button (optional) … assures complete emergency stop.
  • Watertight design … meets up to IP67 environmental requirements.
  • Continuous E-stop protection satisfying EN ISO 13850 … for supported spans up to 165 feet (50m).
  • Visual position indicator … for ease of installation.
  • Up to four contacts in a compact housing … available in five contact configurations.
  • Designed to meet the Performance Level requirements of EN ISO 13849-1 and Safety Control Categories of EN 954-1.
  • Mounting accessories … ease and extend installation.

Applications

The ZQ900 is ideal for replacing multiple, discrete E-stop pushbuttons or achieving a continuous, immediately accessible emergency stop … especially where space is limited. Typical applications include conveyor lines, textile machinery, packaging machinery, and transfer lines.

Part Numbers

  • ZQ 900-11 - 1NO/1NC
  • ZQ 900-02 - 2NC
  • ZQ 900-13 - 1NO/3NC
  • ZQ 900-22 - 2NO/2NC
  • ZQ 900-04 - 4NC

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The ZQ900 is designed to provide continuous emergency stop control along exposed areas of machinery and conveyors which present hazards to operator/maintenance personnel. Unlike E-Stop pushbuttons, emergency cable-pull systems can be actuated at any point along the “trip wire”.

The unit features a double-break contact block offering a choice of five contact variations which change state when the cable is pulled or goes slack. Thus the switch can be actuated if an operator falls into, is pulled into, or leans on the trip wire.

In addition the unit features an optional integrated E-Stop pushbutton, a position indicator for easier installation, a button reset, three cable entries, and an optional signaling lamp.

The unit is capable of spanning lengths of up to 50 meters. Its rugged, metal housing and watertight design (up to IP67) make it ideal in hostile environments.

Catalogs
ZQ900 Catalog ZQ900 Catalog
549.7 kB