Operation Manual
10
A7 MIG Welder© Kemppi Oy 2018 1804
INTEGRATION GUIDE
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 connection”).
For instructions on how to congure the touch sensor, see
the A7 MIG Welder Operating manual.
F
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.
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-
action switches”).
The switch type is congured via software. The collision
sensor conguration is described in Subsection 5.1.6,
“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 Figure 3.9, “Collision sensor
connection”).
E
H
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 Figure 3.10, “Collision sensor
with LED indicators”).
C
E
H
Figure 3.10: Collision sensor with LED indicators