6.11 Oversampling
Encoder signal oversampling optimizes the accuracy of resolver and SinCos
signals. This function can only be used, if necessary, for low-track SinCos encoders
and resolvers; using it for high-track SinCos encoders is
not permissible.
ID
Index Name
Unit Description
1956
CON_ACT_Ovrs
Encoder signal oversampling. This function
applies only to resolver and SinCos signals
1956
0
active
Switch for activating and deactivating the
function
1956
1
pmeas
The percentage measuring time for oversampling
dependent on the sampling time.
1956
2
filtershift
Limit frequency for the oversampling filter
1956
3
sourceselect
Signal source for oversampling
1957
CON_ACT_Ovrs_Tracks
Oversampled track signals
1957
0
Track_a
1957
1
Track_b
Table 6.38: Oversampling parameters
NOTE
l
When oversampling is enabled, instead of the normal A/D signals
the oversampled signals for the encoder specified in parameter
P 1956[3] - sourceselect
are used. In the case of high-track
SinCos encoders in particular, the low limit frequency of the
oversampling filters may result in quadrant errors. If the
oversampling units are used, it must always be certain that the
encoder does not dramatically exceed the specified limit
frequencies.
l
Before using oversampling, consult with your project supervisor or
the KEBA Helpline.
ID No.: 0842.26B.5-01 Date: 09.2020
ServoOne - Device Help
106
6 Encoder
6.12 Multi-turn encoder as a single-turn
encoder
By way of parameters P 548[0] - ENC_CH1_MTEnable = 1 (for Channel 1) and
P 585[0] - ENC_CH3_MTEnable = 1 (for Channel 3) a multi-turn encoder can be run
as a single-turn encoder. This function is used primarily for testing purposes.
