Falcon F3400 - Manual (Page 39)

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4 Configuration Menu
Alarm Delay: The amount of time the F3400/F1000 waits to send an alert after an alarm
condition is detected. The F3400/F1000 uses this same time delay to report a return to normal
after the alarm condition clears. The alarm delay is active for all input types except Not
Configured.
Example:
An input is configured as a digital NO, labeled “CRAC UNIT ALARM” and has an alarm
delay of 10 seconds. When the CRAC unit alarms, it closes the contact to the F3400/F1000.
If the CRAC unit returns to normal and opens the contact to the F3400/F1000 within the 10
second alarm delay, no alarm is generated in the F3400/F1000. If the CRAC unit remains in
alarm for 10 seconds or more, the F3400/F1000 records the alarm and generates notification
per the input settings. If the CRAC unit returns to normal and alarms within the 10 second
alarm delay, the F3400/F1000 does not record it as a return to normal. Once the CRAC unit
returns to normal for the 10 second alarm delay, the F3400/F1000 records a return to normal
and generators notification per the F3400/F1000 settings.
Hysteresis: The number that designates the amount an input reading must sway from its preset
alarm reading before it is classified as returned to normal. The Hysteresis provides a deadband
around the limit settings to prevent several alarms and return to normal alarms when the input is
the same as a limit setting.
The Hysteresis applies when the input type is Analog 4-20mA or thermistor and is active for
High Limit 1, High Limit 2, Low Limit 1 and Low Limit 2.
Example:
A temperature sensor alarms when it reaches its High Limit 1 of 80°F. If Hysteresis is set at
four, the sensor must register less than 76°F before the F3400/F1000 reports it as returned to
normal. In another example, a humidity sensor alarms when it reaches its Low Limit 2 of
30% RH. If the Hysteresis is set at five, the humidity must register more than 35% before the
F3400/F1000 reports it as returned to normal.
Relay Activate: Used to assign a Threshold change to analog inputs, or Digital Alarm
generated by this input to a specific relay. To select the relay, check the relay box. This feature
can be set to activate on a High 2/Low 2 threshold for analog points, in the Relay configuration
menu
Dial Out Notification: The list of up to 4 pager numbers to which the F3400/F1000 sends
alarm notification. The numbers correspond to phone numbers configured from the Configure
Phone Number links at the bottom of the Modem Configuration page. Separate each ID number
with a comma. Enter zero to disable. The F3400/F1000 will dial the lowest number listed
regardless of the order the numbers are listed. See 4.5.1, “Configure Phone Numbers” on
page 44 for more information.
Example:
If the Alarm dial out string is set to “3, 5, 1, 0”, the F3400/F1000 will dial Pager #1, Pager #3
and then Pager #5 when an alarm occurs. Pager notification will be sent when an input
alarms (high limit 2, high limit 1, low limit 1, low limit 2 is exceeded or the digital input is in
alarm). An option on the Pager Configuration page determines if the F3400/F1000 will send
a page when an input returns to normal.