22
Function description
RC.1J.Z4.02
©
Danfoss
09/1999
AKC 25H1
Network (Systems with PC or AKA 243/244 with printer and control panel type AKA 21)
Here the information can be transmitted to the PC or the printer. Accompanying this
message is indication whether it is a new error or an earlier error that has been
transmitted. On control panel type AKA 21 only “new” alarms can be seen in this
situation. Old errors that are transmitted cannot be seen.
To use this function, you have to make a setting in the controller. This setting can only
be made from a PC.
The "Auto reset" setting is put in position "ON".
The individual messages will now be sent to the printer or the PC along with a status
which is either 1, 2 or 0.
1 means that it is new and important information (information defined with setting = 1)
2 means that it is new, but not quite so important information (information defined with
setting = 2)
0 means that the error has been deleted.
Who are the alarm receivers?
Single systems
Control panel type AKA 21 will here be the receiver of alarms from the connected
units.
- Each controller is given an address, so that the unit is defined in the system. Setting
of the address is performed directly in each controller via a number of switches (cf.
instructions).
Network systems
A defined PC or AKA 243/244 with printer will here be the receiver of alarms for the
connected units.
- Each controller is given an address, so that the unit is defined in the system. Setting
of the address is performed via a number of switches (cf. instructions).
- Each controller is given a system address. A system address consists of a network
number and an address (the address is the same as the one set in in the controller).
The network number must be set via the PC.
- The addresses of the receivers of all alarms must be set on each controller. There are
two kinds of settings which can only be carried out via the PC.
• The system address of the nearest gateway type AKA 243/244 which has to
retransmit alarms and messages.
• The system address of the final receiver of alarms and messages.
Alarm output on AKC 25H1
The output will only be activated when the setting is [1] (see above). Activation takes
place as long as the error is active.
The output is a “change-over function” to which the following applies:
No alarm:
Terminals 50 and 51 are short circuited.
Alarm:
Terminals 51 and 52 are short circuited.
