Pfaff 3586-2/02, Instruction Manual, Page: 140 / 156

14 - 13
Control unit
Problem Cause Correction
no LED are lit - supply voltage missing check supply voltage
- supply voltage incorrect connect properly
LED motor ready
(H1, H2, H3) is not lit
- signal input Enable not active set input to active
up
motor is not rotating - signal input current controller active set input to inactive
and does not have a
holding torque
- motor connected incorrectly connect properly
motor is not rotating
but does have a
- signal input pulse correct timing and voltage level
holding torque
motor is rotating - signal inputs pulse and direction correct timing and voltage level
unevenly
- overload check load conditions
- motor defective replace motor
motor is rotating in - motor phases connected the connect motor
the wrong direction wrong way round phases properly
- signal input direction incorrectly correct rotary direction
set
motor has too little - motor phase current incorrectly choose the correct phase
momentum set
current
Additional problems