H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Deutschland • Tel +49 241 9105010
Fax +49 241 91050138 • [email protected] • www.zander-aachen.de
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Safety Time Control Device SCB
7.4 Functions of the safe semiconductor outputs O1 and O2
Taking into account the selected configuration, the safe PNP semiconductor outputs
switch on when the safety circuit is closed. Opening the safety circuit leads to a switch-off.
7.5 Functions of the safe relay contacts 17-28 and 27-28
Taking into account the selected configuration, the safe relay contacts switch on when the
safety circuit is closed. Opening the safety circuit leads to a switch-off.
7.6 Functions of the auxiliary outputs C1 and C2
Two semiconductor outputs C1 and C2 are available for signalling different states. The
switching behaviour is determined by the selected configuration.
7.7 Functions of the delay time
Depending on the configuration, the safe output/contacts can switch on or off time delayed
to the safety circuit. The following time functions can be configured:
•
Switch-On delay
The safe outputs/contact will switch-on time delayed if the safety circuit ist getting clo-
sed and a proper reset signal occurs. Opening the safety circuit leads to an immediate
switch-off of the safe outputs/contacts.
•
Switch-Off delay
The safe outputs/contact will switch-on immediate if the safety circuit ist getting closed
and a proper reset signal occurs. Opening the safety circuit leads to time delayed
switch-off of the safe outputs/contacts.
•
Switch-Off delay with automatic Re-Trigger function
In the event of a switch-off delay with automatic re-trigger function, the safe outputs/
contacts switch on immediately by closing the safety circuit and a monitored, manual
reset command. If the safety circuit is opened, the outputs/contacts are switched off
immediately or with a time delay according to the selected configuration.
If the safety circuit is closed again before the countdown of the parametriced delay
time is ended, the outputs/contacts that have already been switched off are automati-
cally activated again. For the still activated outputs/contacts, the countdown of the de-
lay time is stopped and reset for the next request.
