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2TLC172015M0201, rev. D
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9.1 Programming of Blanking
The blanking of material in the protection area is programmed as follows:
1. Switch off the barrier’s power supply.
2.
Place the object to be detected for blanking purposes in the optical f ield.
3. Select the internal change-over switches (see 4.4) required for the mode of blanking by looking at the
table.
4. Connect the MUTING A (green) input to 24 VDC.
The test/reset
(see 5) contact must be closed.
5. Restore the barrier’s power supply (to the receiver).
6. Supply the MUTING B (yellow) input with 24 VDC.
7.
The barrier signals successful memorisation of the object in the optical f ield by the flashing of the
LED 2 in the receiver, confirming the acceptance of blanking. If the LED does not flash at this point, it
means that the object takes up an amount of optical beams which exceeds 21 beams or 30% of the
total number of beams in the barrier. Blanking is then not allowed.
8. Disconnect the MUTING A and MUTING B inputs from 24 VDC.
9.
The barrier works normally and signals blanking operation by the flashing of the LED 2.
To Turn Blanking Off
Blanking mode is deactivated with the internal change-over switches. (See 4.4)
NB!
Programming of blanking with no object in the optical field does NOT deactivate blanking. The
tolerance setting and the new resolution are still present.
Blanking Programmer BP-1
Facilitates programming of selected blanking operation, especially if the extension of the object in the
optical f ield changes every now and then. The unit is connected via M12 connectors in series, with the
cable to the Focus II receiver unit.
The procedure is as follows:
1. Disconnect the cable to the receiver and connect it
instead to the bottom M12 connector of BP-1.
2. Connect the short cable from the top M12 con. of
BP-1 to the receiver unit.
3. Place the object to be detected for blanking purposes
in the optical f ield.
4. Switch on the power supply.
5. Press the blue button “Prog.” of BP-1.
6. After 11 s the blue indicator is lit and programming is
f inished.
7. Disconnect the cable and connect it directly to the
receiver unit.Or have it connected all time.
8.
Programming is f inished.