BLG 4A
Safety Light Curtain
Alignment
4
8
english
Note
Alignment of the emitter and receiver is essential for flawless operation of the equip-
ment. The more precisely the units are aligned with respect to each other, the more
resistant the unit is to dust or vibration effects.
Optimal alignment is achieved when the optical axes of the first and last light beam of the emitter
and receiver coincide. To synchronize the two units the beam located closest to the plug is used.
SYNC indicates the lens which is coupled to this beam and LAST the lens which is synchronized
beginning with the last beam.
Figure 5:
Last light beam (LAST)
First light beam (SYNC)
Receiver and emitter alignment (Fig. shows BLG 4A-…-014/030-…)
The function states are indicated by symbols which enable simple status checking regardless of
the orientation of the emitters and receivers.
Four LEDs on the receiver and 2 LEDs on the emitter provide the user with the operating status
of the light curtains (Figure 6).
Receiver (RX)
Emitter (TX)
Figure 6: LED indicators
4.1 Function
indicators
