| TROUBLESHOOTING | |
| Observe all Safety Guidelines detailed throughout this manual |
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PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Bad Weld Ending. | 1. Burnback Disabled. | 1. From the DeviceNet tab of the |
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| Diagnostics Utility, select Monitor. The |
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| Monitor window will be displayed. |
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| Verify under the “State Enabled” that |
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| “Burnback” is present. |
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| 2. | Burnback Time. | 2. | Verify that Burnback Time has a value |
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| other than 0. |
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| 3. | Analog Scans Between Updates. | 3. | The DeviceNet tab of the Diagnostics |
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| Utility displays the POWER WAVE®ʼs |
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| “Analog Scans Between Updates” and |
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| “I/O Scans/Sec.” Verify that “Analog |
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| Scans Between Updates” is ¼ of “I/O |
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| Scans/Sec” value. |
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| 4. | Limit Error reported at the end of a | 4. | Verify all welding settings for |
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| weld. |
| Burnback and Crater states. |
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| 5. | Fan Out. | 5. | From the DeviceNet tab of the |
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| Diagnostics Utility, select Monitor. |
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| Verify under “Analog Input Fan Out” |
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| that Burnback is present for all |
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| analogs in. |
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| 6. | Welding set points. | 6. | Verify Burnback set points for work |
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| point, trim, and wave values. |
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| 7. | Analog Hysteresis. | 7. | From the DeviceNet tab of the |
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| Diagnostics Utility, select Configure. |
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| Verify in “Analog Input Channels” that |
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| the Hysteresis settings are all 0. |
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| 8. | Gas. | 8. | Verify Gas is turned on. |
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Bad Welding. | 1. Analog Scans Between Updates. | 1. | The DeviceNet tab of the Diagnostics |
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| Utility displays the POWER WAVE®ʼs |
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| “Analog Scans Between Updates” and |
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| “I/O Scans/Sec.” Verify that “Analog |
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| Scans Between Updates” is ¼ of “I/O |
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| Scans/Sec” value. |
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| 2. | Voltage Sense Leads. | 2. | Verify voltage sense leads are proper- |
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| ly connected and configured as |
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| described in the instruction manual. |
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| 3. | Analog Hysteresis | 3. | From the DeviceNet tab of the |
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| Diagnostics Utility, select Configure. |
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| Verify in “Analog Input Channels” that |
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| the Hysteresis settings are all 0. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
POWER WAVE® i400
