Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 286)

Section 5A
9/440 Resolver--based CNC/Drive System
5A-40
Check your 9/Series CRT for any drive faults that may have occurred and
are displayed as an error.
Axis Module LEDs
The Axis module has a Status LED visible thru the front cover. It is:
LED Indicates
STATUS Steady Green bus up, axis enabled
Flashing Green bus up, axis not enabled
Flashing Red/Green ready, bus not up
Flashing Red fault present
Steady Red hardware malfunction
For more details on how to diagnose and troubleshoot your axis module refer to the 1394 Digital AC
Multi-Axis Motion Control System Users Manual (publication 1394-5.0)
The following figure shows a typical interconnect diagram for a 9/440
Resolver--based CNC to 1326 motors. Note this figure illustrates only one
servo motor with optional feedback encoder. The 9/440 Resolver--based
CNC can support up to four servo’s and two spindle drives.
5A.8
General Wiring Overview