Sine Wave Encoder [-Mx2/-Mx3 Option]; Figure 2-20: Sine Wave Encoder Phasing Reference Diagram; Table 2-18: Sine Wave Encoder Specifications - Advantech Automation1 iXC4e Hardware Manual

2.3.1. Primary Encoder Inputs

2.3.1.3. Sine Wave Encoder [-MX2/-MX3 Option]

The Sine Wave Encoder option provides higher positioning resolution by subdividing the fundamental
output period of the encoder into smaller increments. The amount of subdivision is specified by the
PrimaryEncoderMultiplicationFactor [A3200: EncoderMultiplicationFactor] parameter. Use Encoder
Tuning [A3200: Feedback Tuning] to adjust the value of the gain, offset, and phase balance controller
parameters to get the best performance. For more information, refer to the Help file.
High resolution or high-speed encoders can require increased bandwidth for correct operation. Use the
High Speed Mode of the PrimaryEncoderMultiplierSetup [A3200: EncoderMultiplierSetup] parameter to
enable the high bandwidth mode. Because this mode increases sensitivity to system noise, use it only if
necessary.
The iXC4e/XC4e can generate emulated encoder signals. These signals can be output on the Auxiliary
Encoder (AUX) connector, SYNC port connector, or used internally by the PSO. Refer to the
EncoderDivider and PrimaryEmulatedQuadratureDivider [A3200: EmulatedQuadratureDivider]
parameters and the encoder output functions [A3200: ENCODER OUT command] in the Help file for
more information.
For the highest performance, use twisted pair double-shielded cable with the inner shield connected to
signal common and the outer shield connected to frame ground. Do not join the inner and outer shields
in the cable.
Table 2-18: Sine Wave Encoder Specifications
Specification
Input Frequency (max)
Input Amplitude
Interpolation Factor (max)
-MX2/-MX3 Primary Encoder Channel
Interpolation Latency
Input Common Mode
(1) Measured as SIN(+) - SIN(-) or COS(+) - COS(-)
52
(1)
-MX2
-MX3
Figure 2-20: Sine Wave Encoder Phasing Reference Diagram
iXC4e/XC4e Hardware Manual
Value
Primary
450 kHz, 2 MHz
0.6 to 1.75 Vpk-pk
65,536
65,536
800 nsec (analog input to quadrature output)
1.5 to 3.5 VDC
Auxiliary
450 kHz
N/A
16,384
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