Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 250)

Section 5A
9/440 Resolver--based CNC/Drive System
5A-4
Axis Module - Connect up to four axis modules to the 9/440
Resolver--based CNC/Drive system (depending on your system module
selection). Axis modules convert the DC power supplied by the system
module to a variable AC voltage (460V AC input provides 460 AC out,
derated 380V AC input provides 380V AC out). This voltage will have
controlled phase, amplitude and frequency for regulating the speed,
torque and direction of the 1326 AC Servomotors. The axis modules
are available in a wide range of power ratings with continuous peak
capabilities of 200% of continuous rating for short durations.
Make motor connections for power, ground, brake, and thermal sensor
to each axis module. Each motor is wired to its own axis module.
1326 motors are described in the 1326 Servomotor Product Data
(publication 1326A-2.9). The 1326 series of motors operate at either
460V AC or 380V AC. Connection of these motors is made directly to
the Axis Module.
Each 1326 motor is equipped with a resolver required for motor
commutation. This resolver can also be used for positioning feedback,
or an external A quad B encoder can be used for positioning. Resolvers
are connected to the feedback board found in the system module.