Lincoln Electric CITOTIG 315DC Service Manual page 50

OUTPUT BOARD VOLTAGE TEST (continued)
J31
to Input bd
TEST PROCEDURE
Use always electrically insulate gloves during this test procedure
1. Apply 400V +/- 15% to the CITOTIG 415DC
2. Turn the machine input switch to ON position, and wait till the power LED on front panel is steady green.
3. Follow the below tables test to perform the voltage tests on connectors and Static Switch IGBT:
J31: Output/Input connector
Pin# Description
• 6Vdc +/- 10% in stick mode in OCV
condition
1 MIS_V
• 0,6 Vdc +/- 10% TIG modes in OCV
condition
2
Not used
3
-5V
4 MIS_I • 1Vdc=100A – 4Vdc=400A for 415DC
5
SGND
6 +24
• 13Vdc +/- 10% any modes in stand-by
7
/TR
• 0Vdc = trigger pushed
8 LS 23Vdc +/- 10% in OCV condition
9 Not used
• 0V=normal value
10 TH2
• 15Vdc +/- 10% = thermic activated on
output board
11
+15V
12
Not used
J32: Output Current Transducer
Pin# Description Idle Value/Ref (use GND as 0V ref.)
1 +15V
2 -5V
3
I OUT
4
SGND
for CITOTIG 415DC
Value (use SGND as 0V ref.)
Not used
-5Vdc
SGND
+24Vdc
Not used
+15Vdc
Not used
+ 15V
-5V
50A=0,7 Vdc
200A=2,6 Vdc
400A=5,2Vdc
SGND
Notes
Output voltage feedback
Not Used
-5Vdc
Output current feedback
Secondary GND for power supply (0V ref.)
+24Vdc
Trigger signal
Lift TIG mode detection signal
Not Used
Thermostat on the output heat sink signal
+15Vdc
Not used
Notes
+ 15V power supply for the hall sensor probe
-5V power supply for the hall sensor probe
Output current reference
Secondary GND for power supply (0V ref.)
51
J32
to "HALL1"
(output current
transducer)