E-4
THEORY OF OPERATION
DH-10
E-4
WIRE FEED HEADS AND
RECEPTACLES
The leads to the drive motor, gas solenoid, and the
tach (hall effect device) are brought into the control
box via the wire drive receptacles. These two 14-pin
receptacles also house the gun trigger leads, the elec-
trode voltage sense lead, and the leads for the option-
al remote with dual procedure capability. Refer to
Figure E.3.
When the gun trigger is activated, the control board
energizes the gas solenoid, then the welding drive
motor and welding power source. The control board
receives tach feedback information and adjusts the
motor armature voltage to match the preset wire feed
speed.
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FIGURE E.3 — WIRE FEED HEADS AND RECEPTACLES.
