Troubleshooting
452
Service Instructions 755 A/756 A - 00.0 - 02/2019
1002
Sewing motor insulation fault
• Check motor phase and PE for
low-impedance connection
• Replace sewing motor encoder
• Replace sewing motor
1004
Sewing motor error: Incorrect
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
• Sewing motor blocked
• Encoder cable not connected
• Encoder cable defective
• Encoder defective
• Remove blockage
• Check encoder cable and replace,
if necessary
• Replace sewing motor
1006
• Sewing motor error: Maximum
speed exceeded
• Sewing motor cable defective
• Sewing motor defective
• Switch off and on the machine
again
• Check class
• Replace encoder
• Replace sewing motor
1007
Error in the reference run
• Replace encoder
• Eliminate stiff movement in the
sewing machine
1008
Fault in sewing motor encoder
Replace encoder
1010
• Cable to sewing motor refer-
ence switch defective
• Reference switch defective
• Replace cable
• Replace reference switch
(part number 9815 935006)
1011
Sewing motor synchronization
error (encoder Z pulse missing)
Switch off the control, use hand-
wheel to turn, and switch on the
control again.
If error is not corrected, check
encoder
1012
Sewing motor synchronization
error
Replace synchronizer
1051
Sewing motor timeout
• Cable to sewing motor refer-
ence switch defective
• Machine head not moving
freely
• excessively high toothed belt
tension
• Replace cable
• Replace reference switch
• Eliminate seizing
• Check toothed belt tension
1052
Sewing motor excess current,
internal current increase to over
25 A
• Replace sewing motor cable
• Replace encoder
• Replace sewing motor
• Replace control
Error code
Symbol
Meaning
Remedial action
Summary of Contents for 755 A
Page 1: ...755 A 756 A Service Instructions...
Page 8: ...Table of Contents 6 Service Instructions 755 A 756 A 00 0 02 2019...
Page 12: ...About these instructions 10 Service Instructions 755 A 756 A 00 0 02 2019...
Page 116: ...Folder 114 Service Instructions 755 A 756 A 00 0 02 2019...
Page 124: ...Transport carriage 122 Service Instructions 755 A 756 A 00 0 02 2019...
Page 138: ...Transport clamps 136 Service Instructions 755 A 756 A 00 0 02 2019...
Page 200: ...Light barriers 198 Service Instructions 755 A 756 A 00 0 02 2019...
Page 222: ...Endless zipper feed optional 220 Service Instructions 755 A 756 A 00 0 02 2019...
Page 238: ...Additional equipment 236 Service Instructions 755 A 756 A 00 0 02 2019...
Page 266: ...Stacker 264 Service Instructions 755 A 756 A 00 0 02 2019...
Page 438: ...Programming 436 Service Instructions 755 A 756 A 00 0 02 2019...
Page 450: ...Decommissioning 448 Service Instructions 755 A 756 A 00 0 02 2019...
Page 452: ...Disposal 450 Service Instructions 755 A 756 A 00 0 02 2019...
Page 472: ...Technical data 470 Service Instructions 755 A 756 A 00 0 02 2019...
Page 496: ...Appendix 494 Service Instructions 755 A 756 A 00 0 02 2019...
Page 497: ......