Walchem WebAlert WA500, Инструкция по эксплуатации

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5.7 Alarm
This page is used to configure the Alarm Output. Select the options that you want for each of the
sections on the page. When you click on the “Submit” button at the bottom of the page, your changes
will take effect. If you move to another page without clicking “Submit” first, your changes will be lost!
Relay Control Mode
Use the pulldown arrow to select if the relay will be Not Used or will be set to Alarm.
Alarm Condition
In the left hand column, a list of all possible alarm conditions will be displayed. Only the alarm
conditions that are possible given how your process monitor is configured will appear. To the right of
each type of alarm condition there will be a column labeled Critical Alarm with a choice of “Yes” or
“No”. Click on the “No” radio button if you do not want that type of alarm to be considered critical.
If an alarm condition is selected as a critical alarm, then you have the option of being notified that the
alarm condition exists, by triggering the alarm relay, or sending an email.
The WebAlert will attempt to send the alarm message email five times at 5 minute intervals and will
then stop trying, even if unsuccessful.
Status
This menu is for information only, and tells you if the alarm relay is currently on or off, and if it is on,
for how much time. Possible status messages are Off, Off | Manual, On - Time counting up (indicating
how long the alarm relay has been active) and On - Time counting down | Hand (for manual output
activation).
Custom Name
You may give the relay a custom name by typing it in the text box.
Critical Alarm Action
Click on the check box to the left of the action or actions that you want to occur if a critical alarm
condition exists. The process monitor can close or open the alarm relay or send an email, or any
combination of the above.
Remote Alarm Delay Time
In order to avoid being notified of an alarm condition that quickly corrects itself, you may set a delay
time for the alarm action. If the alarm condition still exists at the end of the delay time, then the alarm
action will occur. If the alarm condition no longer exists at the end of the delay time, no notification
will occur. Any value between 0 and 1440 minutes is acceptable.
Dry Contact Relay Logic
Click on the radio button that describes how you want the alarm relay to act. The normal method is to
close the relay when an alarm condition exists, but you can also open the relay.
Output Time Limit
Type in the text box the maximum time for the alarm relay to be active. Setting the time to zero will
allow the alarm to be active indefinitely.