Page 37
Mounting and Installation
scanCONTROL 29xx
5.2.6
External Laser Switch-Off (Optional)
Connector
pin assignment
Function
- Laser on: Voltage blaser on/off and -laser on/off 2.8 V… 31 V, I < 5 mA
- Laser off: Voltage blaser on/off and -laser on/off < 0.8 V or open
i
Sensors of laser class 3B (IIIB) need an external key switch to switch off the laser.
PCR3000-x
+U
3
1
blue
2
9
3
1
2
9
3
1
2
9
3
1
2
9
3
1
2
9
max.
30 V
approx. 5 mA
Type 1
Type 2
U
OUT
scanCONTROL
29xx
B
TTL o.
HTL
Laser off:
U
OUT
< 0.8 V
Laser on:
2.8 V < U
OUT
< 30 V
red
white
brown
Ground
Type 3
Type 4
PNP
NPN
Fig. 22 Options for external laser switch-off
Use a serial key switch inside the control circuit to switch off the laser.
If the voltages between pin 3 and pin 1 are < 0.8 V, the laser is off. No external resistor is necessary for the
current limitation. Connect pin 1 with 2 and pin 3 with 9 for permanent “
laser on
“.
The external laser switching-off is implemented as a hardware solution and has a top priority. The laser can
be switched off, in addition, also by software.
