Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 241)

Section 4D
Power Distribution and Wiring Guidlines
4D-11
Figure 4D.8
System Grounding Diagram for 9/260 and 9/290 control
Earth GND (typically AWG 8)*
Chassis GND (typically AWG 10)*
Chassis GND (typically AWG 12)*
Signal GND
GND through mounting
Shield
Monochrome Operator Panel
Line Filter/
Transformer
High Density
I/O
Servo
Amplifier
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
Main
power
supply
Servo
module
9/260 or 9/290
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)
Encoders
Protective Earth (PE)
(typically AWG 8)*
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.
*
PE
Chassis
GRND Stud
PE
Chassis
GRND Stud
Portable Operator Panel
Interface Assembly
Keyboard
interface
Operator Panel
power supply
END OF SECTION