DURKOPP ADLER 969 Classic, Service Instructions Manual, Page: 110 / 122

Troubleshooting
108 Service Instructions 969 - 06.0 - 03/2019
1004 Sewing motor error: incorrect
sewing motor direction of
rotation • Replace encoder
• Check plug assignment and
change, if necessary
• Check wiring in machine
distributor and change it, if
necessary
• Test motor phases and check
for correct value
1005 Motor blocked • Eliminate stiff movement in
the sewing machine
• Replace encoder
• Check class (
t 51 04 )
1006 Maximum speed exceeded • Replace encoder
• Perform reset
• Check class (
t 51 04
)
1007 Error in the reference run • Replace encoder
• Eliminate stiff movement in
the sewing machine
1008 Encoder error • Replace encoder
1010 External synchronizer plug
(Sub-D, 9-pin) not connected • Connect cable of external
synchronizer to control, use
correct connection (Sync)
• Only required for machines with
transmission!
1011 Encoder Z pulse missing • Switch off the control, use
handwheel to turn, and switch
on the control again
• If error is not corrected, check
encoder
1012 Synchronizer fault • Replace synchronizer
1052 Sewing motor overcurrent,
internal current increase
> 25 A • Check selection of class
• Replace control
• Replace sewing motor
• Replace encoder
1053 Sewing motor overvoltage • Check selection of class
• Replace control
1054 Internal short circuit • Replace control
1055 Sewing motor overload • Eliminate stiff movement in the
sewing machine
• Replace encoder
• Replace sewing motor
Code Possible cause Remedial action