Thermal Arc POWERMASTER 320SP, Service Manual

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page 7
Pc-board DP-MAPRO
The pc-board DP-MAPRO is responsible for the welding sequence and is managing the process control of the
PowerMaster. (MAPRO =
MA ster- PRO cess)
Functions
Logicfunctions of the welding process -
generating and monitoring supply voltages -
driving powerup-relays -
driving power unit/units -
monitoring control and operating elements (DS20BF, remote control, torch buttons) -
driving fans -
driving coolingpump -
monitoring fl owmeter -
monitoring mains- and output voltage -
generating signal „welding current on“ (arc established) -
managing communications between PC and machine -
managing and storage of all welding parameters -
CAN-bus communication -
LED displays :
normal
LED state designation
1 (green) fl ashing (half freq. of LED5) CPLD-processor ok
2 (red) off Digital Signal Processor (DSP) ok
3 (green) on supply voltage 3,3V DC ok
4 (red) off micro controller ok
5 (green) fl ashing DSP is working
6 (green) fl ashing micro controller is working
malfunction
LED state designation
1 (green) never on CPLD-processor is not working
2 (red) on DSP is not working
3 (green) off supply voltage 3,3V DC is missing
check 18V~ AC of control transformer X2/1 X2/2
4 (red) on micro controller is not working
5 (green) never on DSP is not working
6 (green) never on micro controller is not working
If the LEDs are indicating a malfunction which can not be relieved by switching the machine off and on again, it is
recommended that the pc-board DP-MAPRO is exchanged.
Overview fuses DP-MAPRO
fuse value [A] Safeguarding
Si 6 1 fans (power unit)
Si 7 2,5 cooling pump