AKA Alarm Table
(alarm routing)
This function can retransmit received alarms to diff erent alarm receivers via the DANBUSS data com-
munication system.
The alarm routing can only be defi ned in the gateway that has been assigned the master function (ad-
dress 125).
Alarm routing takes place on the basis of an alarm table where two diff erent groups of receivers can
be set.
1) Default destinations, route 1, which is the normal receiver group.
2) Optional destinations, route 2. This is the route you use if one of the following conditions is met:
- Contact function DI2 is cut in (manual change-over)
- The time lies within the defi ned time limits (time-based change-over)
The table can contain ten lines, and each line shows an interval (a start and stop time with
indication of day of the week, hour and minu tes).
A line in the table cannot overlap a change of week. Where Sunday changes to Monday, two lines
have to be used in the time table.
Four receivers can be defi ned for each route, as follows:
- Primary:
Alarms are sent to this receiver, if a system address has been defi ned.
- Alternative:
Alarms may be sent to this receiver, if a system address has been defi ned. The alarm will
however only be sent to this receiver, if the primary receiver has not been able to receive the
alarm.
- Copy:
“Alarms” may be sent to this receiver, if a system address has been defi ned. An alarm will not be
sent to this receiver until the primary or alternative receiver has received it, and acknowledged
receipt of it.
- DO:
The DO2 relay output of the defi ned master gateway is activated for two minutes if the function
is selected. The activation of DO2 is independent of the settings made for primary, alternative
and copy receivers, irrespective of whether alarms are to be retransmitted at all. (DO2 is only
activated for status 1 alarms).
The alarm table has to be set by means of system software type AKM. Please note that AKM is also
capable of routing alarms. It is recommended that only one of the two options be used on the same
system.
(When AKA 245 is delivered ex stock, the alarm table is not active).
Appendix B contains a description of repeat routines for alarm transmissions when calls are not
successful.
16 Manual RS8DT102 © Danfoss 09/2004 AKA 245
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