3TK2826 safety relay
Manual, 08/2007, GWA NEB 926 1579-02 DS 02
13
Functions
5
5.1 Functions
Tasks
With the 3TK2826 safety relay, safety-oriented functions (e.g. EMERGENCY STOP
monitoring, protective door monitoring, safety mats) and monitoring functions with
contactless protective equipment such as light curtains are implemented on machines with
moving parts.
The device is particularly suitable for the following tasks:
● Use on machines that operate without an interface to a bus system (stand-alone
operation).
● Flexible use in diverse applications.
Monitoring functions
● EMERGENCY STOP control device
● Protective door
● Light arrays
● Light curtains
● Light barrier
● Laser scanners
● Electromagnetic switches (normally-closed/normally-closed or normally-closed/normally-
open)
● Safety shutdown mat with cross-circuit tripping
WARNING
Prerequisites for monitoring with safety shutdown mats in accordance with DIN EN
1760-1:
• only safety shutdown mats may be connected
• Safety shutdown mats with cross-circuit evaluation only
• Safety shutdown mat and cable resistance < 1000 Ω
• 4-wire system
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