VISION VXL
8540615 • 19/12/2014 • Rev.8
13
MANUAL MODE
Use of manual mode (start/restart interlock activated) is compulsory if the safety
device controls an opening to protect a danger area and a person, after passing
through the opening, may remain in the danger area without being detected (use as
'trip device' according to IEC 61496). Failure to comply with this rule may result in
very serious hazards for the persons exposed.
In this operating mode the safety outputs OSSD1 and OSSD2 are activated (+24VDC) only if
the protected area is free and after the reception of the RESTART signal, using a push
button or thank to an appropriate control on the SEL_A or SEL_B input (ref. Table 4).
After an interception of the protected area, the safety outputs will be de-activated.
To re-activate them it will be necessary to repeat the sequence described above.
The RESTART command is active with a voltage of +24VDC.
The minimum duration of the RESTART command is
100ms.
CONNECTION
OPERATION MODE
SEL_A (PIN 5)
connected to :
24VDC (PIN 2)
SEL_B (PIN 6)
connected to :
24VDC (PIN 2)
(through the RESTART
pushbutton)
K1_K2 (PIN 4)
connected to :
0VDC
MANUAL without K1-K2
feedback control
SEL_A (PIN 5)
connected to :
24VDC (PIN 2)
(through the RESTART
pushbutton)
SEL_B (PIN 6)
connected to :
24VDC (PIN 2)
K1_K2 (PIN 4)
connected to :
24VDC
(through series of contatcts
N.C. of external relays)
MANUAL with
K1-K2 feedback control
Table 4
K1/K2 EXTERNAL CONTACTORS CONNECTION
In every operating mode the K1/K2 external contactors feedback is activable.
If you want to use this control feature, connect the pin 4 of 8 poles M12 connector with the
power supply (+24VDC) through the series of N.C. contatcts (feedback) of external
contactors.
MULTIPLE SYSTEMS
When more than one VISION VXL system is used, precautions must be taken to avoid
optical interference between them: install units so that the beam emitted by the Emitter of
one system can only be received by the relative Receiver.
Figure 9 illustrates some examples of correct positioning when two photoelectric systems are
installed. Incorrect positioning could generate interference, and may result in malfunctioning.
+24VDC
4
RX
K1
K2
