Rockwell Automation 57C423 Common Memory Module - Manual (Page 15)

3Ć3
module. Place the module in the cardboard shipping
container.
Step 5. Take the new module out of the antiĆstatic bag, being
careful not to touch the connectors on the back of the
module.
Step 6. Activate the battery by taking it out of its holder and
removing the tape that covers it. Replace the battery in its
holder. Make certain that the battery is facing in the proper
direction, i.e., the end marked +" on the battery is facing
the end marked +" on the battery holder.
Step 7. Insert the module into the desired slot in the rack. Use a
screwdriver to secure the module into the slot.
Step 8. If you are replacing the M/N 57C413 Common Memory
module that required an external battery backup with M/N
57C413B or 57C423, you may now remove the battery
backup from the power supply. The battery backup is not
required when the Common Memory module is placed in
an AutoMax rack containing Processor models 57C430,
57C431, 57C435 or later. DO NOT REMOVE THE
BATTERY BACKUP FROM RACKS CONTAINING DCS
PROCESSOR M/N 57C407. The external battery is
required to back up this Processor.
Step 9. Turn on power to the rack.
WARNING
THE BATTERY USED WITH THIS DEVICE MAY PRESENT A HAZARD IF
MISTREATED. DO NOT RECHARGE, DISASSEMBLE, HEAT ABOVE 100_C
(212_F), INCINERATE, OR SWALLOW. REPLACE BATTERY WITH RELIANCE
ELECTRIC M/N 57C385 ONLY. DISPOSE OF USED BATTERY PROMPTLY. FAILURE
TO OBSERVE THIS PRECAUTION COULD RESULT IN BODILY INJURY.
3.3 OnĆBoard Battery Replacement
See section 5.2 for a list of the possible reasons that the BAT. OK"
light on the faceplate can shut off. If you need to replace the battery,
the superĆcapacitor will typically provide 400 minutes of backĆup
power between the time the BAT.OK" light goes off and power is
removed from the rack, and the time you insert and activate the new
battery.
Note that the superĆcapacitor on the module is charged by the power
supply. Therefore, be sure power has been turned on to the module
for at least 8 minutes to ensure the superĆcapacitor is sufficiently
charged to retain the contents of RAM memory when the battery is
removed.
Use the following procedure to replace the battery on the Common
Memory module.
Step 1.
Stop any application tasks that may be running.
Step 2. Turn off power to the system.
Step 3. Loosen the screws that hold the module in the rack.
Remove the module from the slot in the rack, being careful
not to touch the connectors on the back of the module.