2
CONNECTIONS
RECEIVER (RX) EMITTER
(TX)
4
5
3
1
2
0 V
OSSD1
TEST/RESET
+24 VDC
OSSD2
3
4
2
1
NOT USED
0 V
+24 VDC
NOT USED
1 = brown = +24 VDC
2 = white
= OSSD 1
3 = blue
= 0V
4 = black
= OSSD 2
5 = grey
= TEST/RESET
1 = brown
= +24 VDC
2 = white
= NOT USED
3 = blue
= 0V
4 = black
= NOT USED
ALIGNMENT PROCEDURE
The alignment between the emitting and the receiving units is necessary to obtain the correct functioning of the light
curtain.
A good alignment prevents output instability caused by dust or vibrations.
The alignment is perfect if the optical axes of the first and the last emitting unit beams coincide with the optical axes of the
corresponding elements of the receiving unit.
The beam used to synchronise the two units is the first after the connector. SYNC is the optics connected with this beam
and LAST is the optics connected to the last beam after the SYNC unit.
Receiver
Emitter
Signals are clearly identified through symbols allowing immediate reading, independent of bars directions.
A short description of the signalling LEDs is necessary to avoid misunderstandings.
Two yellow LEDs (
LAST,
SYNC) on SG2-B receiver, facilitates the alignment procedure.
During standard operation, the LEDs indicate the safety light curtain status, as shown in the table.
Correct alignment procedure
The light curtain alignment can be effected only after having completed the mechanical installation and the electrical
connections. The following procedure has to be followed:
Check the green LED (
) and the yellow LED (
) on the TX unit. If ON, the emitter is running correctly;
Verify that the sensitive area from the safety light curtain is free;
Verify that one of the following conditions is present on the RX unit:
STANDARD CONDITION - NORMAL OP.
Green LED (
) ON and red LED (
) OFF. Both yellow LEDs (
,
) are OFF. Units are aligned.
STOP CONDITION - SAFE (BREAK)
Green LED (
) OFF and red LED (
) ON.
The status of both yellow LEDs (
,
) does not matter. Units are not aligned.
Continue with the following steps to pass from condition 2 to condition 1:
A
Keep the receiver in a steady position and set the emitter until the yellow LED (
SYNC) is OFF.
This condition shows the effective alignment of the first synchronisation beam.
B
Rotate the emitter, pivoting on the lower optics axis, until the yellow LED (
LAST) is OFF.
Under these conditions, the SAFE LED shall turn ON.
NOTE: Ensure that the green LED (
) is steady ON.
C
Delimit the area in which the green LED (
) is steady through some micro adjustments - for the first and then for
the second unit - then place both units in the centre of this area.
Last optics (LAST)
NORMAL
OP.
SAFE
(BREAK)
NORMAL
OP.
LAST
SYNC
ON
First optics = synchronisation
optics (SYNC)
