External Laser Switch-Off (Optional) - MICRO-EPSILON scanCONTROL 29 Series Operating Instructions Manual

Mounting and Installation
5.2.6
Connector multifunction
Function
- Laser on: Voltage between +laser on/off and -laser on/off 2.8 V... 31 V, I < 5 mA
- Laser off: Voltage between +laser 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.
Type 1
Fig. 22 Options for external laser switch-off
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.
scanCONTROL 29xx

External Laser Switch-Off (Optional)

socket, see Fig. 16,
Type 2
9
U
TTL o.
3
OUT
HTL
Laser off:
U < 0.8 V
OUT
Laser on:
2.8 V < U < 30 V
OUT
1
2
Use a serial key switch inside the control circuit to switch off the laser.
pin assignment, see Fig. 17.
Type 3 Type 4
9 9
PNP
3 3
1 1
NPN
2 2
PCR3000-x
+U
B
9 9
red
approx. 5 mA
white
3 3
max.
30 V
1 brown 1
Ground
blue
2 2
scanCONTROL
29xx
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