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Installation and Configuration
2.3.1.4. Analog Encoder Interface
If the -MXU option has been purchased, the standard encoder channel will accept an analog encoder input
signal. The multiplication (interpolation) factor is determined by the EncoderMultiplicationFactor
Table 2-12:
Analog Encoder Specifications
Specification
Input Frequency (max)
Input Amplitude
Interpolation Factor (software selectable)
Refer to
Figure 2-18
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
Ensemble Help file for more information.
0°
90°
SIN
SIN-N
0°
90°
COS
COS-N
0°
90°
MRK
MRK-N
Figure 2-18:
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.
1
EncoderMultiplicationFactor has replaced CfgFbkEncMultFactorMxu in software version 3.00.000.
www.aerotech.com
Description
200 kHz
0.6 to 2.25 Vpk-Vpk
8,192
180°
270°
360°
450°
540°
630°
720°
180°
270°
360°
450°
540°
630°
720°
180°
270°
360°
450°
540°
630°
720°
Positive MOVE (Clockwise)
Analog Encoder Phasing Reference Diagram
Chapter 2
Section 2.3.1.
810°
LINEAR MOTOR
Forcer Wires
Magnet
Forcer
Track
810°
1V
pk-pk
ROTARY MOTOR
810°
Motor Shaft
CW Rotation
(Positive Direction)
Ensemble CL
1
parameter.
Positive MOVE
(Clockwise)
Motor Mounting
Flange (Front View)
31
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