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CENTRIC User Guide, rel. 3.4
7.2.1.6
SETUP > SYSTEM > CONTROLLER
This submenu contains functions related to the system controller.
7.2.1.6.1
I
NTERNAL ADAPTOR STATUS
For use by technician. Displays the data being passed to and from the adaptor card, PC710A, part of the
controller module.
7.2.1.6.2
C
ONTROLLER BATTERY
This option displays a submenu with functions related to the controller’s own internal battery.
Use this submenu to:
•
Define the time interval between automatic tests of the controller battery.
Default value is one week.
•
Enable/disable automatic testing of the controller battery. (“Enable” is recommended under most
circumstances.)
•
Start a test of the controller battery manually. This function can be performed at any time.
7.2.1.6.3
S
ELF
-
SHUTDOWN
(“
WATCHDOG
”
FUNCTION
)
Enables / disables the controller self-shutdown function, also known as the watchdog function.
“Enable” is recommended for most circumstances. Additional information on the watchdog function is
provided below.
Note: disabling the controller self-shutdown function (watchdog function) also disables the “UPS
OFF” button on the left side of the upper front panel of the UPS, which is described in section 4.2.1.
If the self-shutdown function is disabled and the LCD display screen happens to become disabled, the
question of how to switch off the UPS becomes a problem.
7.2.1.6.3.1 Watchdog function – general explanation
The watchdog function (performed by PC710A, the adaptor card) comes into play in the rare instance that a
problem occurs with communication between PC710A and the controller’s computer. The watchdog’s
purpose is to evaluate the symptoms of the problem and to try to recover normal communication between
PC710A and the controller’s computer.
If the watchdog ultimately fails to recover normal operation of the controller computer, the UPS continues to
operate, although with reduced functionality. Basic ON/OFF capability and the ability to move between
inverter mode and bypass mode is still available as described in section
4.2.1 ‘“UPS off” button’, section
4.2.4 ‘“CPU On/Off” button’, and section
4.3 “Fallback push-button control panel”.
