Rockwell Automation 1785-Vx0B, D17856.5.9 PLC-5 VME VMEbus Programmable Controllers User Manual - Manual (Page 37)

Chapter 2
Installation
2-15
If the processor is not powered, the processor battery retains processor
memory. The appropriate battery for your processor is shipped with the
processor and requires special handling. See Allen-Bradley Guidelines for
Lithium Battery Handling and Disposal, publication AG-5.4.
ATTENTION: Installing the battery requires handling the
processor, which can cause electrostatic discharge. See
Chapter 1 for details.
The battery indicator (BATT) warns you when the battery is low. The
indicator first lights when the processor has 10 days of battery back-up
power remaining. The LED will only light when the processor is powered.
Installing or Removing the Processor Battery
To install or remove the battery (cat. no. 1770-XYV), follow these steps:
1. Remove the processor’s battery cover.
2. Locate the battery.
3. Install or remove the battery according to Figure 2.5.
Figure 2.5
Installing a Processor Battery (cat. no. 1770-XYV)
19545
Make sure that the positive (+) side of
the battery is on the right hand side and
the negative (–) side of the battery is on
the left hand side.
Slide the battery into or out of
the processor.
4. Replace and secure the battery cover.
5. Write the date that you installed the battery on the battery cover.
Important: You can insert or remove the battery without powering down
the processor. If you do not want to lose your program, make sure that the
processor is powered when replacing the battery.
Installing, Removing, and
Disposing of the Battery