Configuration / project engineering
9.4 Configuration (undelayed)
3TK2826 safety relay
Manual, 08/2007, GWA NEB 926 1579-02 DS 02
33
When using a 3TK2826-****1/2/4 with instantaneous and time-delayed contacts, the two following
safety notes must always be observed:
CAUTION
In the event of external faults such as
•
Cross-circuit fault
•
Short circuit to ground
•
Current-source short circuit
and to access the configuration mode for copying a delay time after a reset, the following
device behavior must always be taken into account:
The outputs of stop category 0 switch instantaneously, while the outputs of stop category 1
have a time delay.
The sequence cannot be interrupted.
Exception: Switching off the power supply.
CAUTION
If the safe state is restored during the time delay, (e.g. the protective door is closed) and
the start button is actuated, the enabling circuits switch to the active position immediately
after the delay time has elapsed. The actuation of the start button is saved.
9.4
Configuration (undelayed)
Note
The configuration can only be modified after disconnecting the power supply.
Changes during operation are not accepted. The device is in the configuration mode if you
configure it under voltage and then deactivate and reactivate the power supply. The device is
therefore in the safe state and all enabling circuits are deactivated.
