KEB COMBIVERT F5 Instruction Manual page 67

Alignment Process
1) Set LF.3 = P Lrn. The display should confirm with StArt
2) Press and hold the inspection up switch. Motor current will begin to flow in one
phase and the current will ramp up to the motor's rated value. The motor sheave
should turn slowly and then stop when the motor rotor has lined up with one of the
motor poles. The display should show the actual position value of the encoder. As
the motor moves this value will change. When the motor rotor has aligned with a
pole, the value will stabilize. At this point, the alignment has been found.
Continue holding the inspection switch as the drive will then try to move the motor
clockwise and counter clockwise to verify the motor's rotation is consistent with
the encoder's. The motor should return to nearly the same position.
If the motor keeps rotating for more than 30 seconds, the phasing between the
encoder and the motor is not correct. Change LF.28 as described in step 4 below
and repeat the process.
4) If the drive triggers the error E.ENC1, the encoder's counting maybe backwards.
Release the inspection switch. The drive will then automatically swap the encoder
channels by changing the value of LF.28 and then display retry. Go back to step
2.
If the drive displays E.ENC1 again the motor is not able to rotate freely. Release
the inspection switch and verify the brake is opening completely and that there
is not excessive friction. The sheave should be able to turn by hand. Verify the
motor phasing U to U, V to V etc.
If it is still not possible to learn the position try the old method by setting LF.3 =
conf and LF.77 to 2206.
5) Once the this process is complete, donE will be displayed. Release the inspection
switch and make note of the final position number from LF.77 in the job information.
This position number is valid only for this motor and encoder. If the encoder is
physically removed from the motor, this process will need to be done again.
Return to Normal Operation
1) Put the drive into run mode by setting LF.3 to run.
2) Run the motor on inspection up and down. The speed displayed in LF.8 should
be stable and should match the command speed value in LF.88. Additionally the
motor current in LF.3 should be near zero. If the current is not near zero (< 5
amps), the pole position may be off. Try to relearn the position by repeating the
alignment process.
3) If the motor rotates in the wrong direction refer to section 5.11.4 to reverse the
system rotation.
Initial Start Up
67