Control Techniques UD52, Руководство пользователя

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UD52 User Guide
Issue code: 52nu3
13
Procedure
1
Ensure the motor is unloaded (any load will create errors in the
phase-offset measurement).
2
Set parameter 16.10 S
IN
-
COS
encoder phasing test at 1.
3
Enable the Drive.
The motor shaft rotates (as described above) and the measured value of
phase offset is automatically entered in parameter
16.09
S
IN
-
COS
encoder –
phase offset .
If a phasing test is attempted with a motor that has any of the following...
•
High inertia
•
No damping
•
Small load on the shaft
...an incorrect value for the phase offset will be measured. Refer to
parameter
5.27
in the Unidrive Advanced User Guide .
Note
If the Drive trips and the display indicates trip code
ENC.PH7, this indicates either of the following:
The
SIN
and
COS
input connections from the
encoder are incorrectly made
The phase sequence of the motor is reversed
After correcting the connections, repeat the procedure.
Magnetizing current test (Closed-loop Vector)
Refer to
Autotune
in Chapter 3
Setting Up the Drive
in the
Unidrive User Guide
,
or to parameter
5.12
in the Unidrive Advanced User Guide . If the Drive trips
while Autotune is being performed see the Note above.
5.3 Position information
Counting revolutions
Single-turn encoder
Revolutions are not counted.
Multiple-turns encoder
Revolutions are indicated in parameter 16.03
S
IN
-
COS
encoder – revolution
count
. When the serial communications link to the encoder is used, at
power-up the value stored in the encoder is transferred to
16.03
. When
the value of 16.03 reaches a maximum limit that is defined in parameter
16.13 S
IN
-
COS
encoder – No. of revolutions , 16.03 is reset and the count
starts again from zero.