Rockwell Automation 7000L PowerFlex 7000 Medium Voltage AC Drive C Frame - Marine - Manual (Page 282)

4-106 Component Definition and Maintenance
7000L-UM302B-EN-P – June 2013 7000 ―C‖ Frame - Marine
Quadrature Encoder Operation
The Universal Encoder Interface will accept either single or dual
quadrature encoders. Configuration of the board to accept the
encoders is done through jumpers on J4.
Boards shipped from the factory come defaulted to single quadrature
encoder configuration. 
For dual encoder configurations, the primary encoder is wired to pins
1 to 7 on the 1492-IFM20 module. (See table below).
To select the dual encoder option, remove the CD_QUAD jumper
and place it in PARK. This will configure the board to accept two
individual quadrature encoders. In this mode, the drive can switch
between encoders for applications such as Synchronous Transfer
between two motors with each having their own encoder.
For redundant encoder option, remove both the CD_QUAD and
POL_QRDNT jumpers and place them in PARK. With this
configuration, the drive will switch over to the redundant encoder
when it detects a problem with the primary encoder.
 Consult factory for availability of dual Quadrature Encoder options.
A T T E N T I O N A T T E N T I O N When the drive switches over to the
redundant encoder, it cannot switch back
without recycling control power.
Tachometer Feedback Board
(cont.)