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44
Chapter 2
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2.4.1.2. Analog Encoder Interface
If the -MXH/-MXU option has been purchased, the standard encoder channel will accept a differential analog
encoder input signal. The interpolation factor is determined by the EncoderMultiplicationFactor parameter
and is software selectable (refer to the A3200 Help file).
Table 2-17:
Analog Encoder Specifications
Specification
MXU
MXH
Input Frequency (max)
500 kHz
500 kHz
Input Amplitude
0.6 to 2.25 Vpk-Vpk
0.6 to 2.25 Vpk-Vpk
Interpolation Factor (software
selectable)
4,096
65,536
MXH Interpolation Latency
N/A
~ 3.25 µsec (analog input to quadrature output)
Refer to
for the typical input circuitry.
The encoder interface pin assignment is indicated in
The gain, offset, and phase balance of the analog Sine and Cosine encoder input signals can all be adjusted
via controller parameters. Encoder signals should be adjusted using the Feedback Tuning tab of the Digital
Scope, which will automatically adjust the encoder parameters for optimum performance. See the
A3200 Help file for more information.
Figure 2-17:
Analog Encoder Phasing Reference Diagram
N O T E :
The input amplitude is measured peak to peak for any encoder signal (sin, sin-n, cos, cos-n)
relative to signal common. These signals have a typical offset voltage of 2V to 2.5V.
Ndrive ML
Installation and Configuration
Содержание Ndrive ML Series
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