Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 318)

Section 5B
9/440HR CNC/Drive System
5B-28
Connector Description Signal Destination
Analog Out ± 10V Analog with no feedback (typically spindle drive)
RET Signal Return (typically spindle drive)
SHLD shield connect at wiring board only
The memory for such items as part programs, tool offset/compensation
data, and work coordinate offset data is stored on the processor board. In
the case of a power failure, there is a super capacitor on the processor
board that backs up this data for up to 5 days (at 40
° C) on systems without
extended program storage. This super capacitor recharges within 1 hour of
power turn on if completely discharged. If you want to extend this backup
time install the lithium battery pack that supports the data for:
9/440HR Memory Option:
Time (at 40 ° C Discharge):
standard 3 years
with extended program storage 1 year
This battery pack is connected to the lithium battery connector (P1) on the
wiring board as shown in Figure 5B.15. Batteries and the battery cable are
included with the battery replacement kit.
Figure 5B.15
Lithium Battery
9/440HR System Module
Press Cover Release to Open
Wiring Board
+
--
P1
Mount the battery pack to the
inside of the module cover.
Connect the battery pack
to P1 on the wiring board.
The lithium battery contains heavy
metals and must be collected
separately from other waste.
5B.4.4
Battery Backup