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PM Motor Encoder Offset Tuning
Fig 8
shows the autotuning procedure for an encoder offset tuning. The procedure should be performed if the
encoder has been changed or has not been aligned correctly. Before tuning make sure that PM losed loop vec-
tor control is selected (A1-02 = 6) and that the E1-
EN-24
START
Is it possible to remove
the ropes ?
Yes
Remove the ropes.
Set the Base Block inputs BB and BB1
Switch ON the power supply if it is OFF
Does a OPE06 fault
occur?
No
Does a CPF24 fault
occur?
No
Does a OPE02 fault
occur?
No
Open the brake, close the motor contactor,
turn the motor slowly in Forward direction*
monitor U1-05.
Does PGO (no
encoder feedback)
occur?
No
Is the sign of the
U1-05 value positive
(not -)?
Yes
Set:
T1-01 = 4 - Encoder Offset Tuning
Press the UP button until the "Tuning
Ready" display appears.
Close the motor contactor(s) and
press the RUN key.
Wait until the tuning is finished.
Tuning successful?
Yes
("Tuning successful"
display is shown)
Open the contactors, open the base
block inputs and close the brake
FINISH
Fig 8 Encoder Offset Autotuning
and E5-
parameters are set up correctly.
No
Balance the car so that it does not move
with open brakes.
Note: The tuning accuracy will be lower
in this tuning mode
Switch off the power supply
Check parameter
and check if PG card is
* F1-01
* n8-35
Yes
* Check parameter n8-35
Yes
* If EnDat / Hiperface is used
- check the encoder power supply
- check the CLOCK and DATA signal wiring
* Switch off the power supply.
* Check if the correct PG constant (F1-01) and
Yes
absolute encoder resolution (F1-21) has been set.
* Refer to:
page 32, Operator Programming Errors (OPE)
and eliminate the fault source
1
and check
* Check the wiring
Yes
* Check/readjust the encoder
power supply
No
* Check the encoder wiring
* Change parameter F1-05
Refer to
page 33, Auto-tuning Faults
and eliminate the fault source.
No
(Fault code is
displayed)
* 1. Forward direction means:
The direction the motor turns with an UP command at terminal S1 (i.e.
with a clockwise rotating 3 phase supply and U-U, V-V, W-W wiring
between inverter and motor). Usually the direction is clockwise seen
from the motor shaft (traction sheave) side.
Refer to the motor instruction manual or consult the manufacturer for
details about the rotation direction.
correctly installed
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