Touch-Sensing With The Gas Nozzle; Collision Sensor - Kemppi A7 350 Integration Manual

3.6.5 Touch-sensing with the gas nozzle

The default way to use the touch sensor of the welder
system is to use the welding wire as the touch tool.
Alternatively, you can use the gas nozzle of the welding
torch.
If the gas nozzle is used for touch-sensing, connect pin F of
the peripheral connector to the gas nozzle, using an extra
wire (see Figure 3.7, "Touch sensor gas nozzle
For instructions on how to configure the touch sensor, see
the A7 MIG Welder Operating manual.
Figure 3.7: Touch sensor gas nozzle connection

3.7 Collision sensor

The collision sensor is an external device that protects
the torch neck from bending and being damaged. It is
integrated into the mount between the robot arm and the
welding torch. The sensor sends a signal to the robot to
stop welding when a collision is detected at the welding
head.
Not all robot mounts feature a collision sensor. See the
manual of the robot mount for more information.
connection"). The welder system supports two types of collision
sensors, an opening-action switch sensor and a closing-
action switch sensor. The opening-action switch keeps
the relevant electrical circuit normally closed and opens
it on a collision, while the closing-action switch keeps
the electrical circuit normally open and closes it upon a
collision (see Figure 3.8, "Opening-action and closing-
F
action switches").
The switch type is configured via software. The collision
sensor configuration is described in
"Collision sensor settings. "
Figure 3.8: Opening-action (left) and closing-action (right)
switches
Connect the collision sensor to pins E and H of the peri-
pheral connector (see
connection").
© Kemppi Oy 2020
Figure 3.9: Collision sensor connection
Some collision sensors have LED status indicators coupled
with the switch and therefore require supply voltage.
Connect pin C of the peripheral connector to supply
power to the indicators (see
with LED
Subsection 5.1.6,
Figure 3.10: Collision sensor with LED indicators
Figure 3.9, "Collision sensor
10
A7 MIG Welder
E
H
Figure 3.10, "Collision sensor
indicators").
C
E
H
2002