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KEB Encoder Learn
For absolute encoders on PM motors, if at any time the
physical relation between the motor shaft and encoder
changes (i.e. encoder replaced, encoder slippage, etc.) the
encoder position must be relearned.
1. SPI Encoder Learn - Stationary
SPI can be done with the ropes on and the brake set. To start the SPI
functionality go to LL05 and follow the instructions on the LCD:
Begin the procedure by setting:
• Motor Tuning LL05 = SPI (Start)
Follow the instructions on the LCD screen. The user is instructed to:
1. Disable the brake (turn off the BR and EBR breaker).
2. Set command to zero on the MR SRU board under MAIN MENU | SETUP
| SPEED AND SLOWDOWNS | INSPECTION SPEED – set to “0”.
3. On the controller press and hold the inspection (direction + enable
button) until completed.
During the SPI process, the motor will make a series of chirps and the LCD display
will show the encoder position samples.
Proceed to Section #3 “Encoder Synchronization” 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.
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