Emerson Bristol ControlWave Express, Инструкция по эксплуатации

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ControlWave Express Instruction Manual (CI-ControlWave Express)
The CPU/System Controller board accommodates a 3 V, 300 mA
lithium coin cell backup battery housed in a coin-cell socket (S1).
A
supervisory circuit on the CPU switches to battery power when the
regulated 3.3 Vdc falls out of specification. The battery then provides
backup power for the real-time clock (RTC) and the system SRAM on
the CPU/System Controller board.
Note:
If the real-time clock loses its battery backup, the ControlWave
system variable _QUEST_DATE turns ON. You can monitor
this to generate an alarm. See the
System Variables
section of the
ControlWave Designer Programmer's Handbook
(D5125) for
more information.
Caution
You lose SRAM contents when you remove the backup battery.
If you replace a backup battery, wait at least one minute before re-
powering the system. This enables the SRAM to completely discharge.
After you install the new battery, ensure that you have placed jumper
W3 on pins 1-2 (to enable the battery).
Removing /
Replacing the
Battery
1.
If the ControlWave Express is running, place any critical control
processes under manual control.
2.
Remove power from the ControlWave Express.
3.
Remove the CPU/System Controller board assembly from the
housing.
4.
To remove the lithium battery, gently pry up the tab holding the
battery in the coin cell socket and remove the battery with a pair of
tweezers or needle-nosed pliers. Install the replacement battery.
5.
Replace the CPU/System Controller board assembly in the housing.
6.
Re-connect power to the ControlWave Express.
7.
Once the battery has been replaced, the unit executes its Flash-
based application (“boot project”) at power-up, but all of the
current process data is lost. At power-up, the ControlWave Express
acts as though it had just been booted and reverts back to the initial
values specified in its application.
5.2.4 Enabling / Disabling the Backup Battery
For maximum shelf life, the CPU/System Controller board ships
from the factory with the installed lithium backup battery disabled.
You must enable it when you install the CPU/System Controller
board.
Enabling
To enable the battery, install jumper W3 on pins 1-2.
Revised Mar-2011 Service & Troubleshooting 5-7