
Image 6.4: Track signals A and B with and without GPOC
ID No.: 0842.26B.5-01 Date: 09.2020
ServoOne - Device Help
76
6 Encoder
Procedure
Step
Action
1.
Open the manual mode window and set speed-controlled mode.
2.
Motor operated at constant speed
l
Resolver: 1000 rpm
l
SinCos incremental encoder: 1 to 5 rpm
3.
Set
P 549[0] - ENC_CH1_Corr
to "ADAPT(2) = Auto correction"
4.
Wait about 1–3 minutes. During this time, the compensation algorithms
will reach their steady state. Speed ripple should decrease after about 1
minute. This can be monitored with the actual speed value in the scope
or with
P 550 - ENC_CH1_CorrVal
.
5.
Set
P 549[0] - ENC_CH1_Corr
to "CORR(1) = Correction with saved
values".
6.
Save in the device
Table 6.17: Configuring and activating GPOC
NOTE
l
The routine can also be kept enabled permanently. However, this
approach is less robust and requires careful testing to determine
whether the improved encoder evaluation quality will actually be
maintained during continuous operation.
l
The GPOC routine will determine the parameters individually for
each encoder. If the motor is replaced, the GPOC routine must be
activated again.
ID
Index Name
Unit Description
549
0
ENC_CH1_Corr
Signal correction type
550
ENC_CH1_CorrVal
Signal correction values
550
0
OffsetA
Offset, track A - cosine
550
1
OffsetB
Offset, track B - sine
Table 6.18: Signal correction (GPOC) parameters for channel 1 (X7)