Resolver; Calibration Of Resolver And Sine Encoder - Servotronix CDHD2S User Manual

Application Setup
The following parameters are used to configure the analog.
VarCom
ENCOUTMODE
ENCOUTRES
ENCOUTZPOS

6.5.7 Resolver

It is a resolver used to measure the position of the motor shaft.
The resolver has a primary winding and two secondary windings - sine and cosine synchronous
with motor rotation. The voltage level on the sine and cosine waves is related to the axis position
in one magnetic cycle (one pole pair) of resolver.
The resolver usually enables dynamic tracking that is slower than the encoder.
The following parameters are used to configure and monitor resolver feedback.
VarCom
RESAMPLRANGE
MRESPOLES
RESFILTMODE
RESBW
Note: After the drive is powered on, the autotuning of the resolver reference amplitude takes
about 3-5 seconds. During this time, the drive cannot be enabled.

6.5.8 Calibration of resolver and sine encoder

Resolver and sine encoder calibration overview
When the CDHD2S is connected to a motor equipped with a resolver or sine encoder for the
first time, the CDHD2S parameters must be calibrated. Calibration is required during system
assembly. Since the analog component values may change at any time, it is required to repeat the
calibration procedure every two years. After completing the calibration procedure, the calibration
parameters will be saved to the CDHD2S.
Table 6-9
Turn on or turn off encoder simulation and set functions.
Encoder analog output resolution is expressed by equivalent lines per
Encoder analog output index offset value.
Table 6-10
Acceptable range of sine/cosine signal of resolver is expressed as a percentage
of its nominal value (plus and minus percentage)
Number of electrodes of single resolver feedback device.
Define whether to perform feedback position interpolation on resolver feedback
to generate a continuous data stream.
Resolver conversion bandwidth. High bandwidth can obtain better dynamic
tracking, and the high frequency phase lag is small. Low bandwidth generates
low noise. RESBW sets the optimal balance value according to the specific
Description
revolution.
Description
application requirements.
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