Control Board And Display Board - Lincoln Electric INVERTEC 160SX Service Manual

CONTROL BOARD AND DISPLAY BOARD

Control Board (User Interface)
and Display Board
Control Board takes signals (Iout, Vout, Iset),
shows the proper value on the display and
generate the proper set reference for inverter
board: manages stick function (soft crisp,hot start,
arc force, antisticking). Manages input error
(overvoltage), fan and thermal error. Information
exchange with Inverter and Boost board are via
serial protocol. The Weld Controller is a micro-
processor that uses these signals along with input
from the Mode Switch and the Control
Potentiometer to make decisions and change the
machine mode and output to satisfy the
requirements as decided by the operator. These
changes are relayed to the PWM circuit on the
Inverter Board to regulate the gate signals to the
IGBT"s.
The Weld Controller also responds to thermal and
input errors to shut down the machine output.
The error information is then displayed by the
LEDs on the front panel.
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