RC Systems ST-72, Instruction Manual

Page: 54 / 142

ST-72 User's Manual
Document: UM-1007 Revision Level A
48
2.7.2.1 NAME
Assign the controller a name for use in the backup configuration file name on the SD
card. The controller name is limited to 16 characters.
2.7.2.2 CONTRAST
The Configure menu item identified as
CONTRAST
allows users to adjust the LCD
contrast to a level suitable to the ambient lighting. Selecting
CONTRAST
and pressing
Edit
causes the / keys to increase and decrease LCD contrast.
2.7.2.3 DATE & TIME
Adjust the date and time here for use in DATA and EVENT LOGGING. This is a factory
setting but may need to be adjusted for the end users location.
2.7.2.4 ENABLE CHANNEL COUNT
For applications that do not need
64
channels, the ST-72 can be configured to display
16, 32,
or
48.
With fewer channels to be displayed in MAIN DATA screen the cells
expand for better resolution.
2.7.2.5 DISPLAY ALARM
Utilizing the display alarm feature in the System menu allows the ST-72 controller to
force the LCD to the MAIN DATA or ZONE screens when an alarm level is reached. This
proves to be useful if channel or zone must be displayed when in alarm. The MAIN
DATA screen is the default alarm screen from the factory.
2.7.2.6 WARMUP & CAL PURGE TIME
WARMUP & CAL PURGE TIME
are available to prevent unwanted alarm trips
during these times. This time can be adjusted up to five minutes for sensors that take a
long time to warmup or drift back down after a calibration.
2.7.2.7 ZONE SCREEN ENABLED
In some applications all points are linked together in one large ZONE so the ZONE screen
does not need to be displayed. Turning
ZONE SCREEN ENABLED
to
NO
causes
scrolling through the screens to skip the ZONE screen.
2.7.2.8 BLOCK NEGATIVE
This setting prevents negative channel values from being displayed. It applies to all
channels.
2.7.2.9 RELAY REFRESH
RELAY REFRESH menu allows reactivation of Acknowledged alarms after the time period
expires. This feature is used primarily to restart audible alarm devices after having been
silenced by an acknowledge function (via serial port or pressing the Alarm Reset button).
An entry of 0 seconds effectively disables the Alarm Refresh function. Maximum of 60
minutes allowed.