Version 10.12.2019
page 16
WERAC Elektronik GmbH
10. After activating the reduced resolution function with contact pair 1, the test rod must be
used to test whether the taught-in lines to be blanked correspond to the desired ones. If
not, the complete teach-in procedure must be repeated until the configuration is correct.
11. In normal operation in mode 1, the DIP switch is set:
In mode 3 as AOPD with additional function fixed blanking and bypassing:
1. device in OFF state (supply voltage off)
2. set DIP switch S1-1 to the following position:
3. the areas to be permanently blanked must be interrupted or covered. Caution: At least one
line must remain free.
4. switch on the device
5. swivel the light grid over the entire reception area and align it centrally. The yellow LED
lights up. Now wait 30 seconds. Within this time the lines to be blanked are defined and
saved.
6. Switch off dip S1-1.
7. After a pause of 5-7s (to remove the hand from the protected area, this is indicated by the
flickering red LED), the control unit saves the mode, the lines to be blanked and the
reference values of the individual lines in the read-only memory. When this process is
completed, the red LED starts flashing. To exit the adjustment mode, the power supply and
then DIP S1-2 must be switched off.
After the power supply is switched on again, the light grid goes into waiting mode (red and
yellow LEDs light up). It switches to green (OSSD = ON) as soon as the start release is
activated and the light grid is free.
8. The guarded area must be tested in accordance with the given specifications.
9. In normal operation in mode 1, the DIP switch is set:
6.11.6 Activate the bypass function of the light grid
To activate the bypassing function of the light grid system in safety mode 1, 2 or 3 the
following sequence must be met:
Before a bypassing can be chosen and activated all contacts of the two type-4 contact pairs
must be open. Both contacts of a contact pair must close within a time slot of one second.
Only the contact pair which fulfills this requirement activates the overriding. The second
contact pair now cannot influence the bypassing but it is constantly checked if the contacts
also close within one second. If the time slot is exceeded, both contacts of the contact pair
must open again. As soon as one contact of the active contact pair opens, it is checked if the
second contact pair was closed correctly and a bypassing is requested. If so the bypassing
mode is passed to the other contact pair, if not the overriding is stopped and the light grid
guarantees the safety function.
The bypassing mode can be activated and deactivated both in OSSD off mode (when the light
grid is interrupted) and in normal mode when the light grid is unobstructed.
Caution, risk of injury
Particularly when using the bypassing in OSSD off mode it must be ensured by measures
defined through a risk assessment that an activation of the bypassing will cause no hazardous
situation.
I.e. only when hazards can be excluded by using other measures, e.g. a locked and monitored
rolling door and a restart lock, the use of the overriding mode is permitted.
6.11.7 Activate the reduced resolution mode
6.11.7.1 In normal mode
To activate the reduced resolution function of the light grid system in safety mode 2 the
following sequence must be met:
Before switched blanking can be chosen and activated both contacts of the type-4 contact pair
1 must be open. Both contacts of a contact pair must close within a time slot of one second.
Only if the contact pair fulfills this requirement reduced resolution is activated.
The second contact pair is constantly checked if the contacts also close within one second. If
so the system switches to the bypassing mode. This takes place because the overriding has a
higher priority than the reduced resolution mode. I.e. if both contact pairs close correctly
Dip S1
on
off
1
2
3
4
5 6
Dip S1
on
off
1
2
3
4
5 6
Dip S1
on
off
1
2
3
4
5 6
Dip S1
on
off
1
2
3
4
5 6
Dip S1
on
off
1
2
3
4
5 6
