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GENERAL DESCRIPTION
The LF52D and LF56D are a four rolls, digitally
controlled, wire feeders that operates on 40 VDC input
power. LF52D and LF56D support all welding modes
installed on power sources.
Network communications, PC board input power, and
arc voltage feedback is received and transmitted
through the input male plug on the back of the feeders.
LF56D is equipped with USB that can be used to
share welding procedures and settings among many
machines and many users and software update.
MOTOR CONTROL BOARD
The motor control board processes the information
received from the various user operated switches,
(cold inch, gas purge), the data reveived from the User
Interface and sends the signals to energize the active
components such as the solenoid and wire drive
motor.
The tach feedback signal is also processed by this
board which regulates the motor supply voltage to
maintain the required wire feed speed.
USER INTERFACE BOARD
LF52D uses a basic User Interface while the LF56D
use an innovative TFT User Interface. From both is
possible to recall welding programs from the power
source, pre-set welding parameters, read actual
values during welding and define all welding
parameters like start, crater, 2-4 steps, burn back and
many others. Informations and data are exchanged
between the User Interface and the motor control
board via digital Arclink protocol.
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