Power Conversion Led Legend - Lincoln Electric POWER WAVE S500 Service Manual

F-36
POWER CONVERSION ASSEMBLY TEST (continued)
LED NUMBER
LED 1
LED 2
LED 3
LED 4
LED 5
LED NUMBER
LED 1
LED 2
LED 3
LED 4
LED 5
TROUBLESHOOTING AND REPAIR
TABLE F.12 – POWER CONVERSION LED LEGEND
DESCRIPTION
BOTTOM BOOST
IGBT DRIVE
BOTTOM BUCK
IGBT DRIVE
TOP BUCK
IGBT DRIVE
TOP BOOST
IGBT DRIVE
+48VDC AUXILIARY
DESCRIPTION
BOTTOM BOOST
IGBT DRIVE
BOTTOM BUCK
IGBT DRIVE
TOP BUCK
IGBT DRIVE
TOP BOOST
IGBT DRIVE
+48VDC AUXILIARY
POWER WAVE
CONDITIONS
INPUT POWER
(472VAC) APPLIED
AND MACHINE "ON"
INPUT POWER
(472VAC) APPLIED
AND MACHINE "ON"
INPUT POWER
(472VAC) APPLIED
AND MACHINE "ON"
INPUT POWER
(472VAC) APPLIED
AND MACHINE "ON"
INPUT POWER
(472VAC) APPLIED
AND MACHINE "ON"
CONDITIONS
INPUT POWER
(255VAC) APPLIED
AND MACHINE "ON"
INPUT POWER
(255VAC) APPLIED
AND MACHINE "ON"
INPUT POWER
(255VAC) APPLIED
AND MACHINE "ON"
INPUT POWER
(255VAC) APPLIED
AND MACHINE "ON"
INPUT POWER
(255VAC) APPLIED
AND MACHINE "ON"
® S500
F-36
LED STATUS
OFF
ON
ON
OFF
ON
LED STATUS
ON
ON
ON
ON
ON