Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 289)

Section 5A
9/440 Resolver--based CNC/Drive System
5A-43
Figure 5A.21
System Grounding Diagram for 9/440 Resolver- based control
Earth GND (typically AWG 8)*
Chassis GND (typically AWG 10)*
Chassis GND (typically AWG 12)*
Signal GND
GND through mounting
Monochrome Operator Panel
Transformer
High Density
I/O
Spindle
Drive
Spindle
motor
Servo
motor
Servo
motor
Machine Tool
Operator Cabinet
Operator Panel
(see below)
MTB Panel
MTB Panel
I/O module
Component Enclosure
RS-422 or RS-232
Terminal
System
Module
9/440 Resolver--based CNC/Drive
Digital
I/O (ac)
Color Operator Panel
Operator Panel
power supply
Color
CRT
Keyboard
interface
Operator Panel
power supply
Keyboard
interface
Monochrome
CRT
Drives Cabinet
input
output
HPG
Single point
GND
PE
Analog
I/O
Digital
I/O (dc)
Encoder
Potential Earth (PE)
(typically AWG 8)*
Portable Operator Panel Interface Assembly
Operator Panel
Interface Module
PE
Chassis
GRND Stud
PE
Chassis
GRND Stud
PE
Chassis
GRND
Stud
Refer to local standards and
codes for wire sizing.
*
Resolvers
Axis Modules (PE1)
PE
on power supply
Ground Stud
on 9/440
Resolver--based
CNC assembly
PE
Chassis
GRND Stud
PE
Chassis
GRND Stud
Keyboard
interface
Operator Panel
power supply