Maretron Alarm Module ALM100 Bedienungsanleitung PDF herunterladen (Seite 262)

time in this field, the alert will return to the “Active” state, and annunciators will

begin sounding again for that alert.

If a value of 0:00 is entered, then the alert will never re-trigger.

Set Delay – The condition for the parameter being monitored must be in its error

condition for at least the set delay time before the alert will become active. An

interesting use of the set delay when monitoring a bilge pump (for example) is to

set the Set Delay to a large value (say 20 minutes). Now, if the bilge pump runs

for more than 20 minutes at a time the alert will be triggered.

Clear Delay – The condition for the parameter being monitored must be not in its

error condition for at least the clear delay time before the alert will become

cleared.

10.3.6.4.5 Off Alert

As opposed to high and low alerts that are associated with analog input signals

(i.e., many different possible input values), there are also switch alerts that are

associated with a binary input value (sometimes called on or off, yes or no,

enabled or disabled, set or reset, active or inactive). The switch alert is similar to

the high and low alert except that there are no set or reset points. The mere fact

that the switch is seen as “Off” causes the alert to become an active alert

(assuming the Set Delay is set to zero). Likewise, if the switch being monitored is

seen as “On”, then the alert becomes inactive (assuming the Clear Delay is set to

zero). If the delays are not programmed to zero, then the switch must remain

“Off” for the Set Delay before the alert becomes active, and must remain “On” for

the Clear Delay before the alert becomes inactive.

10.3.6.4.5.1 Trigger Configuration

Figure 92 – Trigger Configuration – Data Unavailable Alert

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Maretron Alarm Module ALM100 Bedienungsanleitung Seite 262