Lincoln Electric IM840 ETHERNET_DEVICENET MODULE K2436-1 - Manual (Page 25)

B-5 TROUBLESHOOTING B-5
ETHERNET / DEVICENET MODULE
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
Poor Weld Termination.
1. Burnback state enabled
2. Burnback Time
3. Analog Scans Between Updates
4. Limit Error reported at the end of a
weld.
5. Correct Schedule selected.
6. Fan Out
7. Analog Hysteresis
1. Using DeviceNet Observer select
Monitor under the DeviceNet
menu. Verify under State Enable
that Burnback is present for the
schedule being run.
2. Using DeviceNet Observer verify
that Burnback Time for the active
schedule in the main window has
a value other than 0 in it.
3. Using DeviceNet Observer select
Configuration under the
DeviceNet menu. Verify that
Analog Scans Between Updates
is 1/4 of I/O Scans/Sec value.
4. Verify all welding settings for
Burnback and Crater states.
5. Using DeviceNet Observer verify
that the correct schedule is select-
ed as active.
6. Using DeviceNet Observer select
Monitor under the DeviceNet
menu. Verify under Analog Input
Fan Out that Burnback is present
for all analogs in.
7. Using DeviceNet Observer select
Configuration under the
DeviceNet menu. Verify in Analog
Input Channels that the Hysteresis
settings are all 0.
DEVICENET