Ensemble Epaq Hardware Manual Installation and Configuration
2.3.1. Encoder Interface
The Epaq is equipped with standard and auxiliary encoder feedback channels. The standard encoder
interface is accessible through the feedback connector. The standard interface is a line driver encoder that
will accept an RS-422 differential line driver signal. If the drive had been purchased with the -MXU option, the
standard encoder interface has been configured to accept an analog encoder.
Refer to Section 2.3.1.3. for encoder feedback phasing. Refer to Section 3.7. for the auxiliary encoder
channel.
N O T E :Encoder wiring should be physically isolated from motor, AC power and all other power wiring.
N O T E :The PSO feature is not compatible with the -MXU option. The PSO feature operates with the -
MXH option and with square wave encoders.
N O T E :If the Feedback Connector is factory configured for the -MXU option, it cannot be used with a
square wave encoder.
Table 2-10: Encoder Interface Pin Assignment
Pin# Description In/Out/Bi
1 Chassis Frame Ground N/A
3 +5V Power for Encoder (500 mAmax) Output
6 Encoder Marker Reference Pulse - Input
7 Encoder Marker Reference Pulse + Input
14 Encoder Cosine + Input
15 Encoder Cosine - Input
17 Encoder Sine + Input
18 Encoder Sine - Input
21 Signal Common for Encoder N/A
34 Chapter 2 www.aerotech.com