Rockwell Automation LC-Series Linear Motor - Manual (Page 32)

Item Number 814036 - Rev C
3-2 Troubleshooting
3. Hall to Back EMF Phasing
a. With drive power OFF, verify Hall circuit is connected to the drive
per interface wiring specifications.
b. Disconnect motor leads from drive.
c. Turn Hall power supply ON (driver power ON).
d. While slowly and steadily moving the motor by hand, perform the
Hall signal test except this time check the motor phases are in-phase
with the specific Hall signal per the Motor Phasing Diagram. The
phase error between Hall signal and in-phase Back EMF should be
within
±
5 electrical degrees.
Removal/Installation of the Hall Effect Module:
To remove Hall effect module:
1. Disconnect Hall cable from the drive.
2. Place two or three layers of cardboard on the magnets to prevent tools
being attracted to the magnets.
3. Remove the two M4 SHCS and lock washers using a 3 mm hex key.
To install Hall effect module:
1. Place two or three layers of cardboard on the magnets to prevent tools
being attracted to the magnets.
2. Place module at the end of the motor.
3. Install the two M4 SHCS and lock washers using a 3 mm hex key. Do
not over tighten.
4. Remove cardboard from magnet plate.
5. Connect hall cable connector
6. No further adjustment is required.
IMPORTANT
Observe Back EMF phase polarity.
Back EMF A-B means:
Probe Tip = A and Probe Common = B