IE-SNC-P85x1-11
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Alarm limits
For each measurement channel is possible to set upper and lower limits, time-delay for
alarm activation (0 – 65535s) and hysteresis for alarm clearing.
Example of setting the limit to the upper alarm limit:
In Point 1 the temperature exceeded the limit. From this time, the time-delay is counting.
Because at point 2 the temperature dropped below the limit value before the time delay
expired, alarm was not set.
In Point 3 the temperature has risen over limit again. During the time-delay the value does
not drop below the set limit, and therefore was in Point 4 caused alarm. At this moment
were sent e-mails, traps and set alarm flag on website, SNMP and Modbus.
The alarm lasted up to Point 5, when the temperature dropped below the set hysteresis
(temperature limit – hysteresis). At this moment was active alarm cleared and e-mail send.
When alarm occurs, alarm messages will be sent. In case of power failure or device reset
(e.g. changing the configuration) will new alarm state evaluated and new alarm messages
will be send.
