Carrier i-Vu Open Link Installation And Startup Manual page 18

Installation
Backup Battery
Turn off internal backup
battery after ___ days to
conserve battery life (shutoff
date/time)
BACview Control
Overwrite Daylight Saving
parameters set in BACview?
Keypad inactivity timeout
(minutes)
Keypad user-level password
Module Clock
Clock Fail Date and Time
Time Synch Sensitivity
(seconds)
BACnet COV Throttling
Enable COV Throttling
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How long backup battery should run after power loss.
TIP Downloading memory activates the battery backup. This
conserves battery life when you know the i-Vu Open Link will be
without power for an extended period after downloading (for
example, during shipment):
Verify the Archive Valid LED is lit, then set this field to 0.
After you install the i-Vu Open Link and apply power, enter a
number greater than 0.
Yes—Every memory download includes Daylight Saving Time
properties from the System Options tab and overwrites changes to
these properties made from BACview.
No—Download Daylight Saving Time properties during first
download. You must make subsequent changes from BACview.
End the user session, turn off the backlight, and display the
standby screen after this period of inactivity.
Numeric password user must enter to access system through
BACview.
Date and time control program uses when controller's real-time
clock is invalid.
TIP Use an occupied date and time (such as a Tuesday at 10
a.m.) so the equipment does not operate in unoccupied mode if
the controller loses power during occupancy.
On a Time Synch signal, update the controller clock only if the
controller time differs from the signal time by more than this
value.
Under normal circumstances, COV Throttling should be enabled to
prevent excessive network traffic if an object's COV Increment is
set too low. See EXCEPTION below.
When enabled, if an object generates excessive COV broadcasts
(5 updates in 3 seconds), the module driver automatically throttles
the broadcasts to 1 per second. Also, if the object's value updates
excessively for 30 seconds, an alarm is sent to i-Vu/Field Assistant
listing all objects that are updating excessively. A Return-to-normal
alarm is sent only after all objects have stopped updating
excessively.
EXCEPTION In rare circumstances, such as process control, a
subscribing object may require COV updates more frequently than
once per second. For these situations, clear this checkbox, but
make sure that your network can support the increased traffic.
You also need to disable the Excessive COV alarms under the
driver's Common Alarms .
i-Vu Open Link