DCM00002 REV. 16 15
Line Board Module
Performs the dual function of providing RFI filtering for the line voltage input to the power
supply, and controlling the electrical current surge to the ultrasonic Power Supply Module
at power up until the inrush current limiter relay engages. The filtering also blocks
ultrasonic signals from entering the AC main line. Additionally, the Line Board contains a
soft start circuit module which limits the effects of current inrush.
DC Power Module- rectifies, filters, and regulates the AC voltages from the Line into DC
voltages for the CPU Board. These two circuits are described below:
• 5VDC output: provides +5VDC for the analog and digital circuitry on the CPU Board
• 24VDC output: provides +24VDC for the CPU Board control signal and user I/O voltage
The DC Power Supply is mounted to the rear of the Power Supply case. It is mounted so it
will swivel up to service the DC Power Supply, Line Board, and fuses.
Machine Controller Board
Provides a standard interface for automation and is accessed on the rear of the power
supply. It gives the customer the ability to make their own interface for automation or
special control and/or special reporting needs. It is mounted to the CPU Board on
standoffs, and is connected to the rear of the controller case by its end panel.
CPU Board
Controls the following functions of the Power Supply:
• Responding to start and stop signals
• Responding to alarm and reset signals
• Responding to user input from the front panel
• Activating and monitoring ultrasonics
• Provides information for Front Panel Displays
• Generate alarms
• Sending Weld data via RS232 serial communication
• Control communications
This board mounted to the bottom of the power supply box on standoffs and is connected
to the rear of the controller case by its end panel. To access this board, removal of the
Machine Controller Board is required. The system software resides in U1 as shown in
Figure 2.2.
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