Description of diagnostic indications
17
Internal diagnostic messages are supplied by the LEDs on board 15.14.250.
The LEDs indicate operating status of the relevant part, as described in the table below:
Led
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L16
Meaning
-15 Vdc supplied by 15.14.250 for 15.14.250
control section
+15 Vdc supplied by 15.14.250 for 15.14.250
control section
+5 Vdc supplied by 15.14.250 for 15.14.250
control section
+24 Vdc supplied by 15.14.250 to power front panel
+48 Vdc supplied by 15.14.250 to power front panel
-15 Vdc supplied by 15.14.250 for 15.14.250
UPFR section
+15 Vdc supplied by 15.14.250 for 15.14.250
UPFR section
Supply under voltage alarm
Supply overvoltage alarm
UPFR active
Output power enabling (also see sect. 7.1 "output power"
LED and sect. 9.2.4 "pot signal")
Thermal cutout alarm
Gate MOS 11 present
(output power enabling)
Gate MOS 12 present
(output power enabling)
Gate MOS 15 present
(output power enabling)
Gate MOS 16 present
(output power enabling)
Status (in regular operating conditions)
ON
ON
ON
ON
ON
ON
ON
OFF = everything OK
ON= unit lockup
OFF = everything OK
ON = unit lockup
ON (brightness depends on output current delivered)
MMA: ON
TIG: ON if torch trigger pulled
OFF = everything OK
ON = unit lockup
MMA: ON
TIG: ON if torch trigger pulled
MMA: ON
TIG: ON if torch trigger pulled
MMA: ON
TIG: ON if torch trigger pulled
MMA: ON
TIG: ON if torch trigger pulled
