Honeywell Minitrend QX, User Manual

Page: 75 / 324

43-TV-25-30 Iss.6 GLO Aug 07 UK 69
• Time Period - (Only available when the Alarm Type is set to Rate Up or Rate Down).
Enter (in seconds) how long the signal is allowed to deviate, at the specified deviation
level, before an alarm is triggered.
• Tag - Enter a tag or name to identify this alarm. Up to 17 characters.
• Allow Change - If activated this will allow quick configuration changes to this alarm
level from the Alarms > Configure button on the Main Menu.
This does not change the original setup.
• Relays Out - Select and choose which Relay Output(s) is triggered by this alarm (on
this pen only). The Fixed button will use the common relay output on the power board
(24V relay). (Common relay output is not available for the
eZtrend QXe
recorder).
• Latched - A latched alarm will maintain in its active state until the trigger source has
returned to a non-alarm state and the alarm has been acknowledged. A latched alarm
will continue to flash, if an alarm marker or pen pointer is displayed, until it is acknowl-
edged and in a non-alarm state.
See “Acknowledging Alarms” on page 289
A
Reflash option is available to keep the alarm flashing whilst in an alarm state even after
it has been acknowledged. See
Reflash.
• Change Log - Toggles On and Off. Select this to change the Log speed when an alarm
occurs. The Log rate changes when alarm is active and stays at the alarm rate for as
long as the alarm is active then returns to the normal logging rate. Set up the new alarm
logging rate in
Alarm Rate in
“Logging Menu” on page 66
.
• Mark Chart - Toggles On and Off. Selecting On will place a Mark on the Chart with
automated messages when the alarm becomes active. From the position of the Mark
on Chart the chart background colour will change to show it is in an alarm state.
• Email Alarm - Enable this to send an email when any alarm is triggered on this pen.
This function is a firmware option that is activated from the Factory menu >
“Credits” on page 102 .
• Recipients - Only available when email has been enabled. Select your recipients from
the list provided. Email addresses and Server names must be entered in
“Email” on
page 80.
• Hysteresis - (not available for Deviation). Toggles On and Off. When this is activated,
you can set a tolerance level for an alarm. It allows a specified percentage value of the
span of the scale to be added to the alarm level.
• Hyst Level % - (not available for Deviation alarm). Enter as a percentage of the span of
the scale. This is how much tolerance the signal can have past the set alarm activation
point until the alarm is de-activated. The example in
Figure 4.5
shows the alarm acti-
vating at 40% which is the set low alarm level. The alarm is not de-activated until the
signal is at 50%, which is 10% past the set alarm level. So the
Hyst Level % would be
set to 10%. Reverse the process for a high alarm.
• Damping - Toggles On and Off. Damping is a time delay that works going into alarm
only. When switched On, the alarm level must be breached for a specific period of time
before an alarm is triggered.
• Damping Time - Set the amount of Damping time in seconds
• Reflash - Toggles On and Off. Activate this to re-enable an active alarm that has been
acknowledged. Set the Reflash Time.
• Reflash Time - Only enabled when Reflash is active. Set the time period after the alarm
has been acknowledged for the alarm to reflash if it is still in an alarm state.
When the setup is complete go back to the Pen # menu and complete the pen setup.