Thermal Arc POWERMASTER 400SP, Service Manual

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POWERMASTER 400SP, 500SP AUTOMATION
Octobe r 30, 2008 8-7
8.15 DK-DCDRV / DK-S3DRV PC Board
The DK-DCDRV pc-boa r d is managing the p r ima r y d r ive level of the powe r unit 400SP and 500SP.
The DK-S3DRV pc-boa r d is managing the p r ima r y d r ive level of the powe r unit 320SP.
Functions
• encoding powe r unit
• connection tempe r atu r e senso r of heat sink
• supply pc-boa r d LSW
• monito r ing DC link voltage and supply voltage
• safety shut-down of powe r unit
• passth r ough signal powe r up r elais
• passth r ough signal "welding cu rr ent on" (f r om LSW pc-boa r d)
Encoding Power Unit
jumper J1 jumper J2 setting machine type
0 0 240 A 400SP
0 1 270 A 320SP
1 0 300 A 500SP
1 1 reserved
0 = contact open
1 = contact closed
If DIP switches a r e used instead of jumpe r s: 0 = "OFF", 1 = "ON"
Normal LED Displays:
LED state designation
1 (red) off primary overcurrent shut down
2 (green) on drive level of low-side is ok
4 (green) on DC link voltage max is ok
5 (green) on drive level of high-side is ok
6 (green) on DC link voltage min is ok
Malfunction LED Displays:
LED state reason
1 (red) on primary current is too high, power unit has been switched off
2 (green) never on no drive level low-side
4 (green) off DC link voltage is too high (e.g. mains overvoltage)
5 (green) never on no drive level high-side
6 (green) off DC link voltage is too low (e.g. mains voltage too low)