Delta Tau Geo MACRO, Руководство пользователя и справочное руководство

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Geo MACRO Drive User Manual
154 Geo Macro Drive MI-Variable Reference
MS{anynode}, MI941 Resolver Excitation Phase Offset
Range: 0 – 255
Units: 1/256 cycle
Default: 0
MI941 specifies the phase (time) offset for the AC excitation created by the Geo MACRO for resolvers. The
optimum setting of MI941 depends on the L/R time constant of the resolver circuit. MI941 should be set
interactively to maximize the magnitudes of the feedback ADC values. The Turbo setup takes care of this.
MS{anynode},MI942 ADC Strobe Word Channel 1* & 2*
Range: $000000 - $FFFFFF
Units: Serial Data Stream (MSB first, starting on rising edge of phase clock)
Default: $3FFFFF
MI942 controls the ADC strobe signal for machine interface channels on Servo IC m. The 24-bit word set
by MI942 is shifted out serially on the ADC_STROB lines, MSB first, one bit per DAC_CLK cycle starting
on the rising edge of the phase clock. The value in the LSB is held until the next phase clock cycle.
The first 1 creates a rising edge on the ADC_STROB output that is typically used as a start-convert
signal. Some A/D converters just need this rising edge for the conversion; others need the signal to stay
high all of the way through the conversion. The MSB of MI942 should always be set to 0 so that a rising
edge is created on the next cycle. The default MI942 value of $3FFFFF is suitable for virtually all A/D
converters.
MS{node},MI943 Encoder Power control bit
Range: 0-3
Units: 0
Default: 3
MI943 was implemented in the Geo MACRO firmware 1.007 and above. It controls the 5V encoder
power line (pin 12) of the primary encoder feedback connectors (X1 and X2). When MI915 is set equal to
1 the Servo IC de-multiplexes the index pulse and the three hall-style commutation states from the third
channel based on the quadrature state, as with Yaskawa and Sanyo incremental encoders. The Servo IC
breaks out the third-channel signal into four separate values, one for each of the four possible AB-
quadrature states. These encoders need to be power cycled so as to send the Hall sensor signals, and that
is what MI943 does so the user does not have to power cycle the whole Geo MACRO drive, 24VDC.
If MI943 is set equal to 0, both ENCPWR (#1 and #2) would be turned off (0V), if the value is equal to 1
then ENCPWR#1 is turned on (ENCPWR#2 is off). When MI943 is set equal to 2 then ENCPWR#2 is
turned on (ENCPWR#1 is off), if MI943 is set equal to 3 (default) then both ENCPWR (#1 and #2) are
turned on.
MS{node},MI944-MI949 (Reserved for future use)
Range: 0
Units: none
Default: 0