System Operation
Copyright © 2007-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-50H November 2011
49
Smart Alarms
Smart Alarms
are a software simulation of logic gates to allow the logical combination of other
alarms, time schedules and/or system values. Up to 32
Smart Alarms
can be configured.
A single
Smart Alarm
is the equivalent of a multi-input AND, OR or XOR logic gate. More
complex logic arrangements are created by using one
Smart Alarm
as an input into another. For
example:
Two input AND gate:
SAx = Sa AND Sb
Three input OR gate:
SAy = Sa OR Sb OR Sc
Multi-gate logic:
SAz = SAx OR NOT Sd
One input is Smart Alarm SAx (output
from another gate). The other input is
negated. This is available with Alarm
Sources only.
Key:
SAx, SAy, SAz are
Smart Alarms
(entered in the
Smart Alarms
table).
Sa, Sb, Sc, Sd are the
Sources
(entered in the
Alarm Sources
,
Schedule Sources
or
System Value
Sources
tables).
Smart Alarms
also have optional activation and deactivation delays. When activated they can
cause alarm indications (unless
Severity
is set to
Control
) and can activate one or two digital
outputs (in the same way as other alarms).
For more information and application examples contact your Eaton DC product supplier and
request Eaton Application Note AN0106, SC200 Version 3 Advanced Alarm Features.
