sets or queries the sine calibration values. There are four calibration parameters with a software sine encoder and six calibration parameters with a software esolver. All calibration parameters have hexadecimal values.
Sin and Cosine Offset
Multiply by (10000/32768) to get the value in Millivolts. This offset is at the ADC terminal (after the sin and cosine signals are amplified).
Sin to Cosine Match Gain and Scale
The algorithm requires that the sin and cosine signals have the same amplitude. This value equals gain/2^scale and represents the amplitude difference of the sin and cosine signals. It should be close to 1. The firmware multiplies the sin signal samples by this value to get the same amplitude for the sin and cosine signals.
Full-scale Gain and Scale (RELEVANT ONLY FOR
SOFTWARE
RESOLVER INTERFACE)
The algorithm requires that the sin and cosine signals are scaled to 32767. The final value equals gain/2^scale and represents the factor to multiply the sin and cosine signals. This value should be between 1.2 and 1.3. The firmware multiplies the sin and cosine signal samples by this value.
Firmware Versions: 6.3.3 and later
Type: variable (R/W)
Range:
Sin offset: -32768 to
32767
Cosine offset: -32768 to 32767
Sin to Cosine match gain: 1 to 32767
Sin to Cosine match scale: 1 to 15
Full-scale gain: 1 to 32767 (for resolver only)
Full-scale scale: 1 to 15 (for resolver only)
Units: n/a Default: 0h 0h
4000h Eh
4000h Eh (last two are for resolver only)
Opmodes: all Drive Status: en/dis
EEPROM: yes