3TK2845-.FB.. "Spring Force Interlocked Tumbler"
The 3TK2845-.FB.. has two sensor inputs (S1 EMERGENCY-STOP with
monitored start-up, S2 protective door with tumbler and monitored start-up), one
cascading input (CAS/OS with automatic start-up) as well as one door enable
input. On the output side there are one relay enable circuit and two electronic
enabling circuits as well as a solenoid control output and an electronic signaling
If the protective door is not enabled, it cannot be opened. Cessation of the signal
at the inputs S1 or CAS/OS deactivates the enabling circuits.
The solenoid control output and the second electronic enabling circuit are
activated via a signal to the door enable input after the delay time has passed.
This enables the protective door.
Table 2-10: Spring force interlocked tumbler (simplified representation)
3TK2845 Multifunction Device Manual
GWA 4NEB 926 2087-22 DS 01