Installing Your
Programmable Controller
Chapter 4
4-28
ATTENTION: We recommend that you use the following
series of modules when using slot-mounted power supplies:
Isolated ac (120V) Output Module (1711-OD) series C
Isolated ac (220V) Output Module (1771-OR) series B
Contact Output Module (1771-OYL, -OZL, or -OW)
These modules are compatible with the “soft-start” feature of slot-mounted
power supplies. Outputs of certain discrete modules may momentarily
change operating state during power-up or power-down period, which may
cause damage to equipment and injure personnel.
Updates to the latest series modules are available for the 1771-OD series A
or B, 1771-OR series A, and 1771-OY series A. The 1771-OZ series A or
B must be replaced by the 1771-OYL, 177-OZL, or 1771-OW.
We recommend that you replace the internal lithium battery every year.
Leave the processor turned on when you replace the battery. If you turn
off the processor and replace the battery, you may lose the CMOS RAM
memory.
1.
Remove the screw that secures the slotted battery cover.
2.
Remove the battery cover from the processor.
3.
Replace the battery in the battery holder. The positive (+) end of the
battery should contact the positive (+) end of the battery holder. The
negative (–) end of the battery should contact the negative (–) end of
the battery holder.
20214
+
-
lithium battery
battery cover
cover screw
Step 6 - Backup Battery
