Lincoln Electric 11694 Service Manual page 62

®
POWER WAVE S350
PROCEDURE
1. Remove the input power to the Power Wave S350 machine.
2. Perform the Case Cover Removal and DC Link Capacitor
Discharge Procedure.
3. Locate plug J8 on the control board. See Figure F.23. To gain
access to the control board remove the right case side.
4. Locate the current transducer. See Figure F.24.
5. Carefully apply the correct input power to the Power Wave S350.
6. Check for the correct DC supply voltage to the current transducer.
See Figure F.23 for Plug J8. See Wiring Diagram.
A. Pin 2 (lead 212+) to Pin 6 (lead 214- or 216) should read
+15VDC.
B. Pin 3 (lead 213-) to pin 6 (lead 214+ or 216) should read
-15VDC.
NOTE: Do not attempt to check the voltages at the current transducer
connector. The terminals are small and delicate and may be
damaged if probed with meter leads.
7. If the DC supply voltages are not present, the control board may be
faulty. If the supply voltages are correct, proceed to Step 8.
CURRENT TRANSDUCER TEST
Figure F.23 – Plug locations on control board
J8
213
J5 J6
O O
O
N N
N
BT1
O
O
N
N
J13 J2
J11
(continued)
214 OR 216
J8
211
CURRENT
212
FEEDBACK
J4
For Steps 8 through 14 refer to the information in the Diagnostic
Utility found on the Lincoln Service Navigator or at
www.Powerwavemanager.com.
8. Using the ethernet cross connect cable, connect a laptop computer
to the Power Wave S350 via the ethernet port located at the top
rear of the machine. See Figure F.25.
9. Connect a load bank (or 50 ft. weld cable) to the positive and
negative output terminals on the Power Wave S350. See Wiring
Diagram.
10. Using the "Diagnostic Utility Software":
A. Establish Communication with the Power Wave S350.
B. Select the "Calibrate" tab.
C. Select the "50 amp" current set point.
D. Select "Turn Output On".
E. Use an external calibrated ammeter that is not affected
by inverter noise to read the actual current.
11. Check the current transducer's feedback voltage at the control
board plug J8 per Table F.11. Pin 1 (lead 211+) to pin 6 (lead
214- or 216). See Figure F.23, for pin locations. See Wiring
Diagram.
TROUBLESHOOTING AND REPAIR
56