Absolute Encoder Position Verification - KEB COMBIVERT F5 Instruction Manual

Initial Start Up
5.11.3 Absolute Encoder
Position Verification
52
Verification of the encoder position.
Due to friction and the inertial load or the cab and counter weights can
lead to a small error in the actual position value. The following
proceedure will verify whether the position is correct or not.
1) Set LF.36 = to two times LF.17.
2) Pick two floors in the middle of the shaft which are far enough apart
such that the car reaches contract speed
3) Run the car between these floors and monitor LF.94 (peak phase
current). Note the peak value for both the up and down run. The
stored maximum value is cleared by pressing the down arrow. Make
several runs to establish the average value in each direction.
4) Add 2000 to the value in LF.77 and run the car again between the
same two floors. If the current value goes down then go to step 5. If
the current value goes up go to step 6.
5) Add 2000 more to the value in LF.77 and run the car again. If the
peak current in LF.94 goes down further, add 2000 more and try
again. Keep doing this until the motor current begins to rise again.
The value with the lowest current is the best value. Jump to step 7.
6) If the current went up initially, then lower LF.77 by 2000 and run the
car again. If the peak current in LF.94 goes down further, subtract
2000 more and try again. Keep doing this until the motor current
begins to rise again. The value with the lowest current is the best
value.
7) Return the value of LF.77 to the value which gave the lowest current.
Make note of this value in the job information for future reference.