Balluff BLG 4A Series, Краткое руководство

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BLG 4A
Safety Light Curtain
Alignment
4
10 english
After mechanical assembly and electrical connection (see “Assembly”on page 6 and
“Construction and Connections” on page 5) the light curtain can be aligned.
1. Hold the receiver and move the emitter until the yellow LED
( SYNC) goes out.
2. Rotate the emitter around the axis of the first light beam until the yellow LED
( LAST) goes out.
Note
Be sure that the green LED ( NORMAL OP.) is continually on.
3. Align both units for center and delineate the protection area with a fine setting - first on the
emitter and then on the receiver. While these settings are being made the green LED ( )
should be continually on. Strive to meet the condition of maximum alignment
( : 75…100 %) (see “Correctly aligning the light curtain” on page 9).
4. Tighten down emitter and receiver.
5. Verify functionality with the cylindrical test rod having a diameter corresponding to the resolu-
tion (see “Testing” on page 11):
– The green LED (
) on the receiver must come on when the protection field is clear.
– The red LED SAFE (BREAK) must come on even when one light beam is inter-
rupted.
6. Turn the device off and on to switch to normal mode.
The status is indicated during normal operation by the display indicators (see
“Diagnostic messages BLG 4A-…-014/030-…” on page 14).
Once the light curtain has been aligned and fixed in place, this display is helpful both for
checking its alignment and for showing a change in the ambient conditions (dust, interference
from impinging light etc.).
1. Check the emitter to see if both the lower green LED (POWER ON) and the yellow LED
(NORMAL OP.) are on. This will confirm correct function of the emitter.
2. Verify that one of the following conditions is true for the receiver:
– The red LED (SAFE) is on.
Operating condition without alignment.
– The green LED (NORMAL OP.) is on.
Operating condition with already aligned light curtain. In this case both yellow LEDs (LAST,
SYNC) will be on.
3. If the units are not yet aligned, proceed as follows:
a. Hold the receiver and align the emitter so that the lower yellow LED (SYNC) comes on.
This confirms alignment of the first lower beam.
b. Turn the emitter around the light beam of the lower lens until the upper yellow LED (LAST)
also comes on. Under these conditions the red LED (SAFE) must turn off and the green
LED (NORMAL OP.) turn on.
Note
Be sure that the green LED (NORMAL OP.) is continually on.
c. Align emitter and receiver for center and delineate the protection area with a fine setting -
first on the emitter and then on the receiver. While these settings are being made the
green LED should be continually on.
4. Tighten down emitter and receiver.
5. Verify functionality (“Testing” on page 11):
– The green LED ( ) on the receiver must come on when the protection field is clear.
– The red LED SAFE (BREAK) must come on even when one light beam is inter-
rupted.
6. Turn the device off and on to switch to normal mode.
4.2 BLG 4A-…-
014/030-…
alignment
4.3 BLG
4A-…-B…-…
alignment