KEB COMBIVERT F5 Instruction Manual page 68

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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. Go to step 5.
If the motor keeps rotating for more than 30 seconds, the phasing between
the encoder and the motor is not correct. Verifty the motor connection U
to U, V to V, etc. and make sure LF.28 = 0.
3) 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.
4) 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 process is complete, donE will be displayed. Release the
inspection switch and make note of the fi nal 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.89
should be stable and should match the command speed value in LF.88.
Additionally the motor current in LF.93 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 5.11.5 to reverse
the system rotation.
4) For high speed runs under load, it may be necessary to raise 0.LF36 to a
higher value. This value should not be set to a value higher than the motor
manufacturer's peak torque value, usually 2.0 to 2.4 times the motor's
rated torque found in parameter LF.17.
Initial Start Up