Lincoln Electric IM986 POWER WAVE i400 - Manual (Page 50)

E-13 TROUBLESHOOTING E-13
POWER WAVE® i400
Observe all Safety Guidelines detailed throughout this manual
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.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Bad Weld Ending.
Bad Welding.
1. Burnback Disabled.
2. Burnback Time.
3. Analog Scans Between Updates.
4. Limit Error reported at the end of a
weld.
5. Fan Out.
6. Welding set points.
7. Analog Hysteresis.
8. Gas.
1. Analog Scans Between Updates.
2. Voltage Sense Leads.
3. Analog Hysteresis
1. From the DeviceNet tab of the
Diagnostics Utility, select Monitor. The
Monitor window will be displayed.
Verify under the “State Enabled” that
“Burnback” is present.
2. Verify that Burnback Time has a value
other than 0.
3. The DeviceNet tab of the Diagnostics
Utility displays the POWER WAVE®ʼs
“Analog Scans Between Updates” and
“I/O Scans/Sec.” Verify that “Analog
Scans Between Updates” is ¼ of “I/O
Scans/Sec” value.
4. Verify all welding settings for
Burnback and Crater states.
5. From the DeviceNet tab of the
Diagnostics Utility, select Monitor.
Verify under “Analog Input Fan Out”
that Burnback is present for all
analogs in.
6. Verify Burnback set points for work
point, trim, and wave values.
7. From the DeviceNet tab of the
Diagnostics Utility, select Configure.
Verify in “Analog Input Channels” that
the Hysteresis settings are all 0.
8. Verify Gas is turned on.
1. The DeviceNet tab of the Diagnostics
Utility displays the POWER WAVE®ʼs
“Analog Scans Between Updates” and
“I/O Scans/Sec.” Verify that “Analog
Scans Between Updates” is ¼ of “I/O
Scans/Sec” value.
2. Verify voltage sense leads are proper-
ly connected and configured as
described in the instruction manual.
3. From the DeviceNet tab of the
Diagnostics Utility, select Configure.
Verify in “Analog Input Channels” that
the Hysteresis settings are all 0.