Hygienic stainless-steel safety light curtain

The SICK TWINOX4 is a Type 4 device (IEC 61496-1) with 14mm beam resolution. It can be used in safety applications requiring PLe (EN ISO 13849) and SIL3 (EN 62061).

The safety light curtain protects operating personnel when interventions are required in hazardous areas around machines which are subject to stringent hygiene requirements. It is, therefore, suited to use in Restricted Access Barrier System areas such as primary packing and filling stations.

Rugged, resistant to harsh cleaning media and designed without edges or gaps, the TWINOX’s, 20mm x 40mm cross-section dimensions are said to make it suitable for integration in pharmaceutical machinery when space is limited. 

The SICK TWINOX4’s feature an innovative bracket concept and LED status indicators for rapid mounting and easy alignment, maximising machine and system availability. A pair consists of identical twin units incorporating both photoelectric emitters and receivers in a single array across the full length of the housing to maximise use of space, with optimum performance that virtually eliminates blind zones and reduce the need for multiple spares. 

Visible LED indicators are installed along the full sensing height to indicate the functional state of each transmitter and assist in easy optical alignment. 

The hygienic safety light curtain also offers high levels of protection with integrated Restart Interlock, External Device Monitoring (EDM) and beam coding along with OSSD’s for connection to a safety controller.

Machine integration flexibility is assured with a choice of 300mm, 420mm and 600mm light curtain heights, over a width range of up to 4.5m. Operating temperatures range from -20°C to +55°C, hygienic and chemical resistant PUR cable is supplied with standard industrial M12 5-pin connections for the devices.