For channels 1 and 2 the GPOC (Gain Phase Offset Correction) method can be activated for the analog track signals. This enables the mean systematic gain, phase and offset errors on the analog track signals to be detected and corrected. GPOC weights the amplitude of the complex pointer described by the track signals by special correlation methods. The dominant errors can thereby be determined very precisely, with no interference from other encoder errors, and then corrected.
Parameters
| P. no. |
Parameter name Settings |
Function |
|---|---|---|
|
P 0549 P 0561 P 0586 |
ENC_CH1/2/3_Corr | Selection of correction method |
| (0) | OFF | No method selected |
| (1) | CORR | Activate correction with stored values |
| (2) | ADAPT | Track signal correction with automatic (online) value tracking |
| (3) | RESET | Reset values |
|
P 0550 P 0562 P 0587 |
ENC_CH1/ 2/3_CorrVal | Signal correction / Values obtained |
| (0) | OffsetA | Offset, track A (sincos) |
| (1) | OffsetB | Offset, track B (sin) |
| (2) | GainA | Gain, track A (sincos) |
| (3) | GainB | Gain, track B (sin) |
| (4) | Phase | Phase |
Tabelle: Parameters for track signal correction
Correcting track signals
|
When a motor has to be replaced, the GPOC for the motor must always be repeated. |
Copyright © LTi DRiVES GmbH, Januar 2013, ID-Nr.: 0842.26B.1-00 DE