17
UK
8 Operating modes
After new installation or change of the operating mode check the function of
the entire safety system (safety relay and safety light curtains / light grids)�
8.1 Automatic operation
If the safety relay is used in the automatic mode, monitored start is not possible�
The safety light curtains / light grids automatically return to operation if the pro-
tected area is clear, the relay outputs (OSSDs) are activated�
Verify if this is compatible with your machine�
In the automatic mode the relay 1 and relay 2 outputs follow the status of the
safety light curtains / light grids:
Protected area clear Relay outputs = active logic "1"
Protected area interrupted Relay outputs = deactived logic "0"
8.2 Manual operation
Operation in the manual mode is always necessary when passage to a hazar-
dous area is to be monitored (persons can be present in the hazardous area after
accessing the protected area without being detected)�
The relay 1 and relay 2 outputs become active when the protected area is clear
and restart is activated via a restart button or via a respective pulse (> 100 ms) on
the input of terminal 15�
If the safety light curtains / light grids are activated by a person or an object, a
restart is always necessary for the release�
8.2.1 Restart
The restart button has to be outside the hazardous area It has to be installed so
that the hazardous area and access can be clearly seen� It must not be possible to
activate the restart button from within the hazardous area�
The restart time of the safety relay is 100 ms� Also take into account the restart
times of the external contactors�
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