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XR3 Hardware Manual
2.9. Aux Encoder Connectors
The Auxiliary Encoder connector gives you a second encoder input channel. This channel is typically used
for dual loop applications.
The Aux Encoder connector supports square wave encoder types for the -CTN, -CT1, and -CT2 options and
sine wave encoder types with the -CT4 option. Use the AuxiliaryFeedbackType [A3200:
PositionFeedbackType or VelocityFeedbackType] parameter to configure the encoder signal type.
High resolution or high-speed encoders can require increased bandwidth for correct operation. Use the High
Speed Mode of the AuxiliaryEncoderMultiplierSetup parameter to enable the high bandwidth mode. Because
this mode increases sensitivity to system noise, use it only if necessary.
With the -CTN, -CT2, or -CT4 options, you can configure the Auxiliary Encoder input as an output that will
transmit encoder signals for external use. Use the EncoderDivider parameter to configure the Sine ± and
Cosine ± connector pins as RS-422 outputs.
Refer to the Help file for more information.
Invalid or missing signals will cause the XR3 to generate a feedback fault when the axis is enabled. Use
twisted-pair wiring for the highest performance and noise immunity.
Table 2-36:
Aux Encoder Connector Pinout
Pin # Description
1
Auxiliary Sine +
2
Ground
3
Auxiliary Cosine -
4
+5 VA Auxiliary Encoder Power
5
Auxiliary Marker +
6
Auxiliary Sine -
7
Ground
8
Auxiliary Cosine +
9
Auxiliary Marker -
Table 2-37:
Mating Connector Part Numbers for the Aux Encoder Connectors
Mating Connector
9-Pin D-Connector
Backshell
www.aerotech.com
Chapter 2: Installation and Configuration
Aerotech P/N
ECK00137
ECK01021
Figure 2-37:
Aux Encoder Inputs Schematic
In/Out/Bi
Connector
Bidirectional
Output
Bidirectional
Output
Input
Bidirectional
Output
Bidirectional
Input
Third Party P/N
Cinch DE-9P
Amphenol 17E-1724-2
69
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