SIRIUS 3TK28 4 Safety Relay, Single or Dual Channel
Evaluation units with sold-state components such as the SIRIUS 3TK28 4 Safety Relay are becoming increasingly established in safety applications, as a considerably higher number of starting operations and electrical life of the devices is achieved with permanent functional checks and consistently wear-free work. The compact and light design of these safety relays also permit series connection or normal operating switching, e.g. through a PLC. If multiple or potential-free enabling circuits are required in an application, the devices can be expanded using the 3TK28 30 expansion units.
Permanent function checking No wear because switched electronically High switching frequency Long electrical endurance Evaluation of solid-state sensors Sensor lead up to 2000m max. Cascading possible Insensitive to vibrations and dirt Compact design, low weight Approved for the world market Suitable for use with Expansion module 3TK28 30 Two solid state outputs for interface with PLC's Cross channel monitoring available on all units except stock no. 455-5251 Width 22.5 mm
Multifunction device 3TK28 45
Usual combinations of safety applications, such as EMERGENCY-STOP and protective door monitoring, could only be realized in the past by using several individual safety relays. The SIRIUS 3TK28 45 Safety Relay unifies several functions in a single device. Two solid-state and two relay enabling circuits ensure a quick, safe disconnection in just a few actions.
