Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 337)

Section
6
6-1
Emergency Stop Design
Emergency stop (E-Stop) is a function of the control that disables all axis
and spindle drives if a major anomaly is detected.
To guard against damage to the machine and injury to personnel, the
system installer must make the necessary E-Stop connections to the proper
terminals on the control components. E-Stop is required to safely
de-energize the axes and spindle drives and place all I/O in a safe state
(including motor brakes) when an Emergency Stop condition occurs.
ATTENTION: All axis and spindle drives must be disabled by
the emergency stop. Otherwise uncontrolled axis motion may
cause injury to personnel and/or damage to the machine tool.
This section describes connections that must be made to help the control
detects emergency situations and responds appropriately. Topics covered
include:
E-Stop Connections
E-Stop String
Events when E-Stop occurs
6.0
Section Overview