KEB COMBIVERT F5, Operation Manual, Page: 79 / 138

79
Encoder Learn
As an alternative to using the SPI function, a user can use the Encoder
Pole Position Learn. The advantage of the Encoder Pole Position Learn
is that it learns the correct A/B channel phasing in addition to the pole
position. However, the procedure does require frictionless movement
(unroped sheave or balanced car).
For an unroped machine, the speed gains may need to be reduced
beforehand to prevent vibration during the encoder synchronization...
KP Speed Acceleration (LC03) = 300
KI Speed Acceleration (LC08) = 50
KI Offset Acceleration (LC11) = 0
To begin the process, set Encoder Position Pole Learn to “Start”:
• LL06 - Encoder Pole Position Learn = Start
The user will be prompted to:
1. Press and hold the inspection (speed + dir enable inputs)
until finished
During the process, the sheave will align to a motor pole and move back
and forth a few degrees. During this time the encoder position will be
shown on the keypad.
If the A/B phasing is incorrect the process will stop and notify the user.
Then it will resume and automatically make the change and prompt the user
to hold the inspection again.
When the process is complete, the keypad will prompt the user to release
the inspection. The encoder position and A/B phasing information will be
automatically written to parameters LL06 and LL03, respectively.
After the process has completed, the user will be prompted to complete the
portion of the Encoder Synchronization procedure to establish the correct
direction of rotation. Proceed to Section 4.10.3 for further details. If the
Encoder Synchronization process has previously been completed, the user
may Abort the Encoder Synchronization step without losing the learned
Encoder Pole Position.
4.10.2. Encoder Pole
Position Learn
i