E. Dold & Söhne GmbH & Co. KG

Tel.: +49 7723 654-0
E-Mail: dold-relays@dold.com

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Locking module


Locking modules ZRN, ZAN, ZRF und ZAF are assembled with other modules to an STS unit. They... more

Product description

Locking modules ZRN, ZAN, ZRF und ZAF are assembled with other modules to an STS unit. They serve as a solenoid lock of separating guards on machines with cycle or overrun times or other hazards, which may still be present even after the access query. It must therefore be ensured that there is no hazard remaining when removing the actuator or key and access can be unlocked.

Technical specifications

Version: Stainless steel
Description: Modul zur Überwachung, Verriegelung und Freigabe von Schutzeinrichtungen (Arbeitsstromprinzip), mit Notentriegelung


  • EU-Test certificate according to the directive 2006/42/EG, annex IX
  • For safety applications up to PLe/Category 4 according to EN/ISO 13849-1
  • Modular and expandable system
  • Rugged stainless steel design
  • Wireless mechanical safeguarding
  • Combines the benefits of safety switch, locking module and key transfer in a single system
  • Easy installation through comprehensive accessories
  • Protection against lock-in
  • Coding level low, medium, high according to DIN EN ISO 14119:2014-03


  • Locking module for monitoring doors and entries
  • Optionally with emergency or escape unlocking
  • De-energized on trip (ZRN) or energized on trip (ZAN)
  • Status indication by integrated LEDs
  • Separate monitoring of actuator / key position and locking module position
  • Escape unlocking including 10 m pull cable, shroud tensioner, chain and spring