Watlow PPC-2000 - Manual (Page 171)

PPC-2000 User’s Guide Chapter 4: Troubleshooting
Doc.# 30002-00 Rev 2.3 Watlow Anafaze 145
Battery Installation Procedures
Changing the battery on the processor module involves minor
mechanical disassembly and reassembly of the controller.
Appropriate precautions should be taken to prevent
electrostatic discharge damage to the electronic components.
Wear a grounding strap and place components on static-free
grounded surfaces only.
A small flathead screwdriver is needed.
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CAUTION! All control parameters and retained values in the
logic program will be lost when the battery is
removed! Take a Snapshot of the current
configurations in AnaWin3 before removing the
battery.
Be sure to take antistatic precautions.
1. Power down the controller.
2. Remove the power connection to the processor module and
any cables between the modules and terminal boards.
3. Note and label cable locations.
4. Remove the PPC-2000 system from the DIN rail or
panel.
5. Make sure the red top and bottom module latches on the
processor module are in the unlocked position (pushed
toward the back of the module.)
Figure 4.4 PPC Assembled Modules Top View
Module
top
latch
(unlocked) Back
Front
Module
latch
(locked)
top