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A3 MIG Welder© Kemppi Oy 2018 1826
INTEGRATION GUIDE
3.5 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, whereas the closing-action switch keeps
the electrical circuit normally open and closes it upon
a collision (see Figure 3.4, Opening and closing action
switches”)
Figure 3.4: Opening-action (left) and closing-action (right)
switches
The switch type is congured by using the DIP switches.
See the Section 4, “System conguration for details.
Connect the collision sensor to pins A and B of the
peripheral connector (see Figure 3.5, Collision sensor
connection).
A
B
Figure 3.9: Collision sensor connection
3.6 Interconnection cable set
The interconnection cable set comprises several cables
and hoses wrapped in a plastic spiral sleeve. The cable set
is used for delivering the welding power, shielding gas,
and control signals from the welding power source to the
wire feeder.
A B
C
Figure 3.6: Interconnection cable set (wire feeder end)
A. Welding power cable
B. Wire feeder control cable
C. Shielding gas hose
3.6.1 Wire feeder control cable
The wire feeder control cable provides power to the wire
feeder and transmits the control signals between the wire
feeder and the welding power source. It also contains the
touch sensor voltage line from the power source to the
wire feeder.
A
B
C
G
F
I
J
H
D
E
Figure 3.7: Wire feeder control cable connector pinout
A. Power supply (+50 V)
B. Collision sensor
C. Touch sensor voltage (+50…+200 V)
D. Gas valve
E. Wire inch
F. Motor +
G. Motor –
H. Encoder +5V
I. Encoder GND
J. Encoder signal
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