LORCH V Series, Service Manual

Page: 7 / 48

page 7
Pc-board DK-MAPRO
The pc-board DK-MAPRO is responsible for the welding sequence and is managing the process control of the
V-Series
(MAPRO = MA ster- PRO cess)
Functions
- Logicfunctions of the welding process
- generating and monitoring supply voltages
- driving powerup-relais
- driving power unit/units
- driving ignition device
- monitoring control and operating elements (DK-ACI40/DK-DCI40, remote control, torch buttons)
- driving solenoid valve
- driving fans
- driving waterpump
- monitoring flowmeter
- monitoring mains- and output voltage
- generating signal „welding current on“
- managing communications between PC and machine
- managing and storage of all welding parameters
- CAN-bus
LEDs :
normal
LED state meaning
1 (green) flashing (half freq. of LED5) CPLD ok
2 (red) off Digital Signal Processor (DSP) ok
3 (green) on supply voltage 3.3V ok
4 (red) off Microcontroller ok
5 (green) flashing DSP is working
6 (green) flashing Microcontroller is working
malfunction
LED state meaning
1 (green) never on CPLD not working
2 (red) on DSP not working
3 (green) off supply voltage 3.3V missing : check 18V~ of control transformer X9/1 X9/2
4 (red) on Microcontroller not working
5 (green) never on DSP not working
6 (green) never on Microcontroller 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 DK-MAPRO is exchanged.
DIP switch
The DIP switches 1-3 are needed for pro-
gramming the DSP (Process) via serial port.
The DIP switch 4 is set due to the type of
housing as V mobile or V driveable.
DIP switch ON OFF
1-3 serial program. mode normal operation
4 config. V mobile config. V (driveable)
Overview fuses
fuse value [A] safeguarding
Si 6 1 fans (power unit)
Si 7 2,5 cooling unit (pump)
Si 11 1 cooling unit (fans)