Danaher Motion Kollmorgen SERVOSTAR S Series, Setup Manual, Page: 23 / 39

Danaher Motion Kollmorgen Wiring
M-LN-016-0702 Rev D 05/07 17
4. WIRING
All PMI PLATINUM DDL brushless motors are wired using the same
convention. Phase AB leads phase BC by 120° with the cable exit leading
as shown in the motor commutation diagram. The term AB is defined as the
back EMF voltage produced by the motor as it is moving when connecting
the probe of an oscilloscope to motor phase A and the probe return to motor
phase B. You can observe the back EMF voltage of the motor with a two-
channel storage oscilloscope.
4. 1
EMF V
OLTAGE
1. Connect the Channel 1 probe to motor phase A (red wire),
reference to phase B (white wire).
2. Connect the Channel 2 probe to motor phase C (black wire),
reference to phase B (white wire).
3. Ground the inputs to both channels and adjust the offset so that
both channels are separated by one division.
4. Set both inputs to DC.
5. Set both channels of the scope to 2 volts/division.
6. Invert the Channel 2 input and select chop.
7. Push the stage back and forth and adjust the horizontal sweep
time to obtain a suitable waveform (approximately 100 msec/div).
8. Push the stage so the motor cable exit is leading as shown in the
motor commutation diagram and store the image of the scope.
You will see two sinusoidal waveforms on the scope. These waveforms
represent the back EMF voltage of motor phases AB and BC. From this, you
can observe that phase AB (channel 1) leads phase BC (channel 2) by
120°. This agrees with the waveforms illustrated in the motor commutation
diagram. By monitoring the Hall effect signals, you can also find a pair of
motor phases aligned with each individual Hall effect