Pfaff 3588-04/020, Instruction Manual, Page: 162 / 196

14 - 12
Controller
Additional problems
Problem Cause Correction
no LEDs are lit - supply voltage missing check supply voltage
- supply voltage incorrect connect properly
motor is not rotating - signal input current controller
and does not have active
a holding torque set input to inactive
- signal input Enable not active
- motor connected incorrectly connect properly
motor is not rotating - signal input gate active set input to inactive
but does have a
holding torque
- signal input pulse correct timing and voltage
level
motor is rotating - signal inputs pulse and correct timing and voltage
unevenly direction level
- overload check load conditions
- motor defunct replace motor
motor is rotating in - motor phases connected the connect motor phases
the wrong direction wrong way round properly
- signal input direction correct rotary direction
incorrectly set
motor has too - motor phase current choose the correct phase
little momentum incorrectly set current