DESCRIPTION OF OPERATION
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© ESAB AB 2017
DESCRIPTION OF OPERATION
1 MMC unit
This unit handles the welding data, rotary encoders, buttons, display at the front and the CAN
communication.
The MMC consists of four main functions:
• 1AP1 Welding data board - Processor and CAN communication board.
• 1AP2 Display - A dot matrix display with background illumination.
• 1AP3 Control panel - Operators control panel with pushbuttons.
• Rotary encoders - For selection and parameter settings.
The welding data board monitors the function of the entire welding system. It stores welding
data and handle the MMC and communicates over the CAN bus with the welding power
source and the motor control board 26AP1.
Wiring diagram for the control panel
Circuit board identity
Use the menu “Unit information” on the control panel to read out:
• The machine ID. Defines which type of product the board is intended for.
• The node id/unit type is used for identification on the CAN bus.
• The software version.
The ID numbers of the circuit board in a PEK unit are:
• Machine ID = 44.
• Node id = 8.
If used as PAB:
• Machine ID = 46.
• Node id = 8.
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