Description Of Operation; Ap2 Interference Suppressor Board - ESAB Arc 4000i Service Manual

DESCRIPTION OF OPERATION

This description of operation describes the function of circuit boards and other components
in the equipment. It is divided into sections, numbered to correspond to the circuit board
numbers and divisions into function blocks.

AP2 Interference suppressor board

Component positions and circuit diagram for circuit board AP2
The circuit board removes interference signals.
1 MMC module
The MMC module consists of an operator's control panel and a welding data board.
The power source, the wire feed unit and the control panel each have their own
microprocessor for control, with the control panel being the central unit in the system. In
addition to storing and issuing welding data, it also exercises overall control of the system
as a whole.
Setting the welding data
Man--machine communication (MMC) is assisted by the modular architecture of the
equipment. It is possible to choose systems with the emphasis on the simplest possible
operation, or those that can provide more optimised settings for the best welding
performance.
The MMC modules are described in separate manuals
MMC modules for the Mig U4000i and Mig 4000i
The MMC module can either be a control panel fitted to the wire feed unit or a control
pendant connected to the remote connection of the power source or the feed unit.
Mig U4000i: control panel U6 and control pendant U8.
Mig 4000i: control panels MA4, MA6 and contol pendant U8.
MMC modules for the Tig 4000i
The power source is supplied with control panel TA4 or control panel TA6.
MMC modules for the Arc 4000i
The power source is supplied with control panel A2 or control panel A4.
S0740 800 191/E080229/P78
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