Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 342)

Section 6
Emergency STOP Design
6-6
Use the contact on TB1-6,7 in the E-Stop string for status control of
peripheral machine tool devices, such as:
alarms
emergency braking devices (9/440 systems refer to page 5B-34)
axes drive equipment
coolant pumps
remote status indicators
spindle drive
Table 6.A
Contact Ratings, 9/230, 9/440, 9/260, and 9/290 E-Stop Relay (K
1
)
Item Rating
Max. Allowable Power
(resistive load)
30W
Max. Allowable Voltage 30 Vdc
Max. Allowable Current 1.4A
When E-Stop occurs:
the position loop is disabled and issues no motion commands
the following error is cleared
part program execution stops
it is the OEM’s responsibility to assure that the axes decelerate
appropriately
Important: Note that E--Stop condition is not the same as a power loss
condition or a hardware failure.
Controlled Stop on E-Stop
The controlled stop on E--Stop feature is used for servo systems that use
the 9/Series to close the velocity loop on these servo hardware platforms:
9/440 systems
9/260 and9/290s that use the 8520-ENC4 or 8520-SM4
9/230’s connected to the 8520 or 1394 digital drive interface.
Important: The controlled stop feature, as described in this section, is
only available on standard systems using a system executive of 10.02 or
higher (some custom executives may not support controlled stop on
E--Stop) and have the appropriate servo hardware.
The controlled-stop feature can be used in conjunction with your own
machine-braking system to help decelerate or hold axes in position when
an E--Stop event occurs.
6.3
E-Stop Status
6.4
Events When E-Stop Occurs