Rockwell Automation 1747-PTxx Getting Started Guide for HHT - Manual (Page 13)

Chapter 1
Setting Up Your Equipment
1–6
2. Install the battery, catalog number 1747–BA. The battery compartment is
next to the memory pak compartment.
!
ATTENTION: If you do not install a battery, the letter B
appears flashing on the prompt line of the HHT display to let you
know that battery power is low; in addition, each time you power
up, the self–test diagnostic will be interrupted, and the statement
BATTERY TEST FAILED will appear.
To prevent this from happening, leave the “battery low defeat
jumper” inserted in the battery socket. The HHT will be
functional, but your user program will be cleared form memory
when you de–energize the HHT. If you do not download the user
program to the processor before you de–energize the HHT, your
program will be lost.
A. Remove the jumper from the battery socket, then plug the battery
connector into the socket (red wire up). Secure the battery between
the clips.
Backside of HHT
Battery
Compartment
Plug battery connector into
socket (red wire up).
Secure battery between clips.
.
.
.
B. Replace the cover.