Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 814)

Section 15B
Replacement Procedures
15B-58
The 9/440 system module is the assembly that holds the drive power
assembly as well as the 9/440 CNC assembly and wiring board. The 9/440
CNC assembly consists of the 9/440 main processor board, the feedback
board, and the mounting bracket. When a repair is necessary to the 9/440
CNC assembly it must be removed from the system module and sent as a
separate assembly. When a repair is necessary to the power assembly of
the 9/440 system module, the 9/440 CNC assembly must be removed and
the entire system module sent without the 9/440 CNC assembly, wiring
board, and battery backup.
Important: Never attempt to separate the boards of the CNC assembly
(processor board/feedback board). These boards must be serviced as an
assembly.
Regardless of if you are sending in the system module or the 9/440 CNC
assembly you must remove the 9/440 CNC assembly from the system
module. This procedure covers this removal.
Important: When sending in the 9/440 CNC assembly you must remove
both your FLASH and RAM SIMMs as well as your 9/Series option chip.
If you send these in with your 9/440 CNC assembly they may not be
returned. Removing these SIMMs and the option chip is discussed later in
this procedure.
1. Make sure 3--phase drive power and 24 V logic power to the system
module has its circuit breaker open.
ATTENTION: Make sure all power is off to the 9/440 before
continuing with this procedure. Both three phase power and 24
volt logic power should be disabled.
Important: Follow proper electro static discharge precautions. Always
wear an ESD certified wrist strap.
2. Open the system module front cover. Label and disconnect any
cables going to the CNC wiring board. Label and disconnect encoder
port three (if used).
3. Label and disconnect any cables (feedback, fiber optic ring, serial
port, etc...) wired through the bottom of the system module.
4. If you are sending in the 9/440 CNC assembly go to step 8.
5. Label and disconnect wires to the system module power terminal.
15B.40
Replacing the 9/440 System
Module or CNC Assembly