B-11
OPERATION
B-11
MACHINE INTERFACE
The TOMAHAWK™ 1000 comes standard with a
machine interface. Interface signals provided include:
arc start, arc initiated, and arc voltage. These signals
are accessible through the 14 pin connector on the
case front.
ARC START:
The Arc Start circuit allows for triggering of the power
source to commence cutting. This circuit can be
accessed through pins K and M of the 14 pin connec-
tor. The circuit has a 15 VDC nominal open circuit
voltage and requires a dry contact closure to activate.
ARC INITIATED:
The Arc Initiated circuit provides information as to
when a cutting arc has transferred to the work piece.
This circuit can be accessed through pins I and J of
the 14 pin connector. The circuit provides a dry con-
tact closure when the arc has transferred. Input to this
circuit should be limited to 0.3 A for either 120VAC or
30VDC.
ARC VOLTAGE:
The Arc Voltage circuit can be used for activating a
torch height control. This circuit can be accessed
through pins D and G of the 14 pin connector. The
circuit provides full electrode to work arc voltage (no
voltage divider, 270VDC maximum).
Users wishing to utilize the Machine Interface can
order a K867 Universal Adapter (please adhere to the
pin locations stated above) or manufacture a 14 pin
connector cable assembly.
TOMAHAWK™ 1000
14-PIN BOX RECEPTACLE, FRONT VIEW
J
I
H
N
G
F
E
D
C
L
Arc Start
Arc Voltage
Arc Initiated
M
K
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